Better tests for Java native client (#14132)

* add echo tests with java native client * fix echo server * fix github * add npm install * update samples * add license header * update smaples * add test for array of string * fix java native respone type casting * better code format * add license header
2022-11-29 14:18:14 +08:00 · 2022-11-29 14:18:14 +08:00 · 3a26da76b0
commit 3a26da76b0
parent fabd0a8be2
58 changed files with 4288 additions and 45 deletions
--- a/.github/workflows/samples-java-client-echo-api-jdk11.yaml
+++ b/.github/workflows/samples-java-client-echo-api-jdk11.yaml
@ -0,0 +1,42 @@
+name: Java Client (Echo API) JDK11
+
+on:
+  push:
+    paths:
+      - samples/client/echo_api/java/**
+  pull_request:
+    paths:
+      - samples/client/echo_api/java/**
+jobs:
+  build:
+    name: Build Java Client JDK11
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        sample:
+          # clients
+          - samples/client/echo_api/java/native
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-java@v3
+        with:
+          distribution: 'temurin'
+          java-version: 11
+      - name: Cache maven dependencies
+        uses: actions/cache@v3
+        env:
+          cache-name: maven-repository
+        with:
+          path: |
+            ~/.m2
+          key: ${{ runner.os }}-${{ github.job }}-${{ env.cache-name }}-${{ hashFiles('**/pom.xml') }}
+      - name: Setup node.js
+        uses: actions/setup-node@v3
+      - name: Run echo server
+        run: |
+          git clone https://github.com/wing328/http-echo-server -b openapi-generator-test-server
+          (cd http-echo-server && npm install && npm start &)
+      - name: Build
+        working-directory: ${{ matrix.sample }}
+        run: mvn clean package
--- a/bin/configs/java-native-echo-api.yaml
+++ b/bin/configs/java-native-echo-api.yaml
@ -0,0 +1,8 @@
+generatorName: java
+outputDir: samples/client/echo_api/java/native
+library: native
+inputSpec: modules/openapi-generator/src/test/resources/3_0/echo_api.yaml
+templateDir: modules/openapi-generator/src/main/resources/Java
+additionalProperties:
+  artifactId: echo-api-native
+  hideGenerationTimestamp: "true"
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaClientCodegen.java
@ -795,6 +795,24 @@ public class JavaClientCodegen extends AbstractJavaCodegen
            }
        }

+        if (NATIVE.equals(getLibrary()) || APACHE.equals(getLibrary())) {
+            OperationMap operations = objs.getOperations();
+            List<CodegenOperation> operationList = operations.getOperation();
+            Pattern methodPattern = Pattern.compile("^(.*):([^:]*)$");
+            for (CodegenOperation op : operationList) {
+                // add extension to indicate content type is `text/plain` and the response type is `String`
+                if (op.produces != null) {
+                    for (Map<String, String> produce : op.produces) {
+                        if ("text/plain".equalsIgnoreCase(produce.get("mediaType"))
+                                && "String".equals(op.returnType)) {
+                            op.vendorExtensions.put("x-java-text-plain-string", true);
+                            continue;
+                        }
+                    }
+                }
+            }
+        }
+
        if (MICROPROFILE.equals(getLibrary())) {
            objs = AbstractJavaJAXRSServerCodegen.jaxrsPostProcessOperations(objs);
        }
--- a/modules/openapi-generator/src/main/resources/Java/libraries/native/api.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/native/api.mustache
@ -237,13 +237,37 @@ public class {{classname}} {
        if (localVarResponse.statusCode()/ 100 != 2) {
          throw getApiException("{{operationId}}", localVarResponse);
        }
-        {{#returnType}}InputStream responseBody = localVarResponse.body();
-        {{/returnType}}return new ApiResponse<{{{returnType}}}{{^returnType}}Void{{/returnType}}>(
+        {{#vendorExtensions.x-java-text-plain-string}}
+        // for plain text response
+        InputStream responseBody = localVarResponse.body();
+        if (localVarResponse.headers().map().containsKey("Content-Type") &&
+                "text/plain".equalsIgnoreCase(localVarResponse.headers().map().get("Content-Type").get(0))) {
+          java.util.Scanner s = new java.util.Scanner(responseBody).useDelimiter("\\A");
+          String responseBodyText = s.hasNext() ? s.next() : "";
+          return new ApiResponse<String>(
+                  localVarResponse.statusCode(),
+                  localVarResponse.headers().map(),
+                  responseBodyText
+          );
+        } else {
+            throw new RuntimeException("Error! The response Content-Type is supposed to be `text/plain` but it's not: " + localVarResponse);
+        }
+        {{/vendorExtensions.x-java-text-plain-string}}
+        {{^vendorExtensions.x-java-text-plain-string}}
+        {{#returnType}}
+        InputStream responseBody = localVarResponse.body();
+        {{/returnType}}
+        return new ApiResponse<{{{returnType}}}{{^returnType}}Void{{/returnType}}>(
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
-          {{#returnType}}responseBody == null || responseBody.available() < 1 ? null : memberVarObjectMapper.readValue(responseBody, new TypeReference<{{{returnType}}}>() {}) // closes the InputStream{{/returnType}}
-          {{^returnType}}null{{/returnType}}
+          {{#returnType}}
+          responseBody == null || responseBody.available() < 1 ? null : memberVarObjectMapper.readValue(responseBody, new TypeReference<{{{returnType}}}>() {}) // closes the InputStream
+          {{/returnType}}
+          {{^returnType}}
+          null
+          {{/returnType}}
        );
+        {{/vendorExtensions.x-java-text-plain-string}}
      } finally {
        {{^returnType}}
        // Drain the InputStream
--- a/modules/openapi-generator/src/test/resources/3_0/echo_api.yaml
+++ b/modules/openapi-generator/src/test/resources/3_0/echo_api.yaml
@ -0,0 +1,138 @@
+#
+# Copyright 2018 OpenAPI-Generator Contributors (https://openapi-generator.tech)
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+openapi: 3.0.3
+info:
+  title: Echo Server API
+  description: Echo Server API
+  contact:
+    email: team@openapitools.org
+  license:
+    name: Apache 2.0
+    url: http://www.apache.org/licenses/LICENSE-2.0.html
+  version: 0.1.0
+servers:
+  - url: http://localhost:3000/
+paths:
+  /query/style_form/explode_true/array_string:
+    get:
+      tags:
+        - query
+      summary: Test query parameter(s)
+      description: Test query parameter(s)
+      operationId: test/query/style_form/explode_true/array_string
+      parameters:
+      - in: query
+        name: query_object
+        style: form #default
+        explode: true #default
+        schema:
+          type: object
+          properties:
+            values:
+                type: array
+                items:
+                    type: string
+      responses:
+        '200':
+          description: Successful operation
+          content:
+            text/plain:
+              schema:
+                type: string
+  /query/style_form/explode_true/object:
+    get:
+      tags:
+        - query
+      summary: Test query parameter(s)
+      description: Test query parameter(s)
+      operationId: test/query/style_form/explode_true/object
+      parameters:
+      - in: query
+        name: query_object
+        style: form #default
+        explode: true #default
+        schema:
+          $ref: '#/components/schemas/Pet'
+      responses:
+        '200':
+          description: Successful operation
+          content:
+            text/plain:
+              schema:
+                type: string
+
+components:
+  schemas:
+    Category:
+      type: object
+      properties:
+        id:
+          type: integer
+          format: int64
+          example: 1
+        name:
+          type: string
+          example: Dogs
+      xml:
+        name: category
+    Tag:
+      type: object
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+      xml:
+        name: tag
+    Pet:
+      required:
+        - name
+        - photoUrls
+      type: object
+      properties:
+        id:
+          type: integer
+          format: int64
+          example: 10
+        name:
+          type: string
+          example: doggie
+        category:
+          $ref: '#/components/schemas/Category'
+        photoUrls:
+          type: array
+          xml:
+            wrapped: true
+          items:
+            type: string
+            xml:
+              name: photoUrl
+        tags:
+          type: array
+          xml:
+            wrapped: true
+          items:
+            $ref: '#/components/schemas/Tag'
+        status:
+          type: string
+          description: pet status in the store
+          enum:
+            - available
+            - pending
+            - sold
+      xml:
+        name: pet
--- a/samples/client/echo_api/java/native/.github/workflows/maven.yml
+++ b/samples/client/echo_api/java/native/.github/workflows/maven.yml
@ -0,0 +1,30 @@
+# This workflow will build a Java project with Maven, and cache/restore any dependencies to improve the workflow execution time
+# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-maven
+#
+# This file is auto-generated by OpenAPI Generator (https://openapi-generator.tech)
+
+name: Java CI with Maven
+
+on:
+  push:
+    branches: [ main, master ]
+  pull_request:
+    branches: [ main, master ]
+
+jobs:
+  build:
+    name: Build Echo Server API
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        java: [ '8' ]
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up JDK
+      uses: actions/setup-java@v2
+      with:
+        java-version: ${{ matrix.java }}
+        distribution: 'temurin'
+        cache: maven
+    - name: Build with Maven
+      run: mvn -B package --no-transfer-progress --file pom.xml
--- a/samples/client/echo_api/java/native/.gitignore
+++ b/samples/client/echo_api/java/native/.gitignore
@ -0,0 +1,21 @@
+*.class
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.ear
+
+# exclude jar for gradle wrapper
+!gradle/wrapper/*.jar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+
+# build files
+**/target
+target
+.gradle
+build
--- a/samples/client/echo_api/java/native/.openapi-generator-ignore
+++ b/samples/client/echo_api/java/native/.openapi-generator-ignore
@ -0,0 +1,23 @@
+# OpenAPI Generator Ignore
+# Generated by openapi-generator https://github.com/openapitools/openapi-generator
+
+# Use this file to prevent files from being overwritten by the generator.
+# The patterns follow closely to .gitignore or .dockerignore.
+
+# As an example, the C# client generator defines ApiClient.cs.
+# You can make changes and tell OpenAPI Generator to ignore just this file by uncommenting the following line:
+#ApiClient.cs
+
+# You can match any string of characters against a directory, file or extension with a single asterisk (*):
+#foo/*/qux
+# The above matches foo/bar/qux and foo/baz/qux, but not foo/bar/baz/qux
+
+# You can recursively match patterns against a directory, file or extension with a double asterisk (**):
+#foo/**/qux
+# This matches foo/bar/qux, foo/baz/qux, and foo/bar/baz/qux
+
+# You can also negate patterns with an exclamation (!).
+# For example, you can ignore all files in a docs folder with the file extension .md:
+#docs/*.md
+# Then explicitly reverse the ignore rule for a single file:
+#!docs/README.md
--- a/samples/client/echo_api/java/native/.openapi-generator/FILES
+++ b/samples/client/echo_api/java/native/.openapi-generator/FILES
@ -0,0 +1,36 @@
+.github/workflows/maven.yml
+.gitignore
+.travis.yml
+README.md
+api/openapi.yaml
+build.gradle
+build.sbt
+docs/Category.md
+docs/Pet.md
+docs/QueryApi.md
+docs/Tag.md
+docs/TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter.md
+git_push.sh
+gradle.properties
+gradle/wrapper/gradle-wrapper.jar
+gradle/wrapper/gradle-wrapper.properties
+gradlew
+gradlew.bat
+pom.xml
+settings.gradle
+src/main/AndroidManifest.xml
+src/main/java/org/openapitools/client/ApiClient.java
+src/main/java/org/openapitools/client/ApiException.java
+src/main/java/org/openapitools/client/ApiResponse.java
+src/main/java/org/openapitools/client/Configuration.java
+src/main/java/org/openapitools/client/JSON.java
+src/main/java/org/openapitools/client/Pair.java
+src/main/java/org/openapitools/client/RFC3339DateFormat.java
+src/main/java/org/openapitools/client/ServerConfiguration.java
+src/main/java/org/openapitools/client/ServerVariable.java
+src/main/java/org/openapitools/client/api/QueryApi.java
+src/main/java/org/openapitools/client/model/AbstractOpenApiSchema.java
+src/main/java/org/openapitools/client/model/Category.java
+src/main/java/org/openapitools/client/model/Pet.java
+src/main/java/org/openapitools/client/model/Tag.java
+src/main/java/org/openapitools/client/model/TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter.java
--- a/samples/client/echo_api/java/native/.openapi-generator/VERSION
+++ b/samples/client/echo_api/java/native/.openapi-generator/VERSION
@ -0,0 +1 @@
+6.3.0-SNAPSHOT
--- a/samples/client/echo_api/java/native/.travis.yml
+++ b/samples/client/echo_api/java/native/.travis.yml
@ -0,0 +1,16 @@
+#
+# Generated by: https://openapi-generator.tech
+#
+language: java
+jdk:
+  - oraclejdk11
+before_install:
+  # ensure gradlew has proper permission
+  - chmod a+x ./gradlew
+script:
+  # test using maven
+  - mvn test
+  # uncomment below to test using gradle
+  # - gradle test
+  # uncomment below to test using sbt
+  # - sbt test
--- a/samples/client/echo_api/java/native/README.md
+++ b/samples/client/echo_api/java/native/README.md
@ -0,0 +1,135 @@
+# echo-api-native
+
+Echo Server API
+
+- API version: 0.1.0
+
+Echo Server API
+
+
+*Automatically generated by the [OpenAPI Generator](https://openapi-generator.tech)*
+
+## Requirements
+
+Building the API client library requires:
+
+1. Java 11+
+2. Maven/Gradle
+
+## Installation
+
+To install the API client library to your local Maven repository, simply execute:
+
+```shell
+mvn clean install
+```
+
+To deploy it to a remote Maven repository instead, configure the settings of the repository and execute:
+
+```shell
+mvn clean deploy
+```
+
+Refer to the [OSSRH Guide](http://central.sonatype.org/pages/ossrh-guide.html) for more information.
+
+### Maven users
+
+Add this dependency to your project's POM:
+
+```xml
+<dependency>
+  <groupId>org.openapitools</groupId>
+  <artifactId>echo-api-native</artifactId>
+  <version>0.1.0</version>
+  <scope>compile</scope>
+</dependency>
+```
+
+### Gradle users
+
+Add this dependency to your project's build file:
+
+```groovy
+compile "org.openapitools:echo-api-native:0.1.0"
+```
+
+### Others
+
+At first generate the JAR by executing:
+
+```shell
+mvn clean package
+```
+
+Then manually install the following JARs:
+
+- `target/echo-api-native-0.1.0.jar`
+- `target/lib/*.jar`
+
+## Getting Started
+
+Please follow the [installation](#installation) instruction and execute the following Java code:
+
+```java
+
+import org.openapitools.client.*;
+import org.openapitools.client.model.*;
+import org.openapitools.client.api.QueryApi;
+
+public class QueryApiExample {
+
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        // Configure clients using the `defaultClient` object, such as
+        // overriding the host and port, timeout, etc.
+        QueryApi apiInstance = new QueryApi(defaultClient);
+        TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter queryObject = new HashMap(); // TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter | 
+        try {
+            String result = apiInstance.testQueryStyleFormExplodeTrueArrayString(queryObject);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling QueryApi#testQueryStyleFormExplodeTrueArrayString");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+
+```
+
+## Documentation for API Endpoints
+
+All URIs are relative to *http://localhost:3000*
+
+Class | Method | HTTP request | Description
+------------ | ------------- | ------------- | -------------
+*QueryApi* | [**testQueryStyleFormExplodeTrueArrayString**](docs/QueryApi.md#testQueryStyleFormExplodeTrueArrayString) | **GET** /query/style_form/explode_true/array_string | Test query parameter(s)
+*QueryApi* | [**testQueryStyleFormExplodeTrueArrayStringWithHttpInfo**](docs/QueryApi.md#testQueryStyleFormExplodeTrueArrayStringWithHttpInfo) | **GET** /query/style_form/explode_true/array_string | Test query parameter(s)
+*QueryApi* | [**testQueryStyleFormExplodeTrueObject**](docs/QueryApi.md#testQueryStyleFormExplodeTrueObject) | **GET** /query/style_form/explode_true/object | Test query parameter(s)
+*QueryApi* | [**testQueryStyleFormExplodeTrueObjectWithHttpInfo**](docs/QueryApi.md#testQueryStyleFormExplodeTrueObjectWithHttpInfo) | **GET** /query/style_form/explode_true/object | Test query parameter(s)
+
+
+## Documentation for Models
+
+ - [Category](docs/Category.md)
+ - [Pet](docs/Pet.md)
+ - [Tag](docs/Tag.md)
+ - [TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter](docs/TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter.md)
+
+
+## Documentation for Authorization
+
+All endpoints do not require authorization.
+Authentication schemes defined for the API:
+
+## Recommendation
+
+It's recommended to create an instance of `ApiClient` per thread in a multithreaded environment to avoid any potential issues.
+However, the instances of the api clients created from the `ApiClient` are thread-safe and can be re-used.
+
+## Author
+
+team@openapitools.org
+
--- a/samples/client/echo_api/java/native/api/openapi.yaml
+++ b/samples/client/echo_api/java/native/api/openapi.yaml
@ -0,0 +1,129 @@
+openapi: 3.0.3
+info:
+  contact:
+    email: team@openapitools.org
+  description: Echo Server API
+  license:
+    name: Apache 2.0
+    url: http://www.apache.org/licenses/LICENSE-2.0.html
+  title: Echo Server API
+  version: 0.1.0
+servers:
+- url: http://localhost:3000/
+paths:
+  /query/style_form/explode_true/array_string:
+    get:
+      description: Test query parameter(s)
+      operationId: test/query/style_form/explode_true/array_string
+      parameters:
+      - explode: true
+        in: query
+        name: query_object
+        required: false
+        schema:
+          $ref: '#/components/schemas/test_query_style_form_explode_true_array_string_query_object_parameter'
+        style: form
+      responses:
+        "200":
+          content:
+            text/plain:
+              schema:
+                type: string
+          description: Successful operation
+      summary: Test query parameter(s)
+      tags:
+      - query
+      x-accepts: text/plain
+  /query/style_form/explode_true/object:
+    get:
+      description: Test query parameter(s)
+      operationId: test/query/style_form/explode_true/object
+      parameters:
+      - explode: true
+        in: query
+        name: query_object
+        required: false
+        schema:
+          $ref: '#/components/schemas/Pet'
+        style: form
+      responses:
+        "200":
+          content:
+            text/plain:
+              schema:
+                type: string
+          description: Successful operation
+      summary: Test query parameter(s)
+      tags:
+      - query
+      x-accepts: text/plain
+components:
+  schemas:
+    Category:
+      properties:
+        id:
+          example: 1
+          format: int64
+          type: integer
+        name:
+          example: Dogs
+          type: string
+      type: object
+      xml:
+        name: category
+    Tag:
+      properties:
+        id:
+          format: int64
+          type: integer
+        name:
+          type: string
+      type: object
+      xml:
+        name: tag
+    Pet:
+      properties:
+        id:
+          example: 10
+          format: int64
+          type: integer
+        name:
+          example: doggie
+          type: string
+        category:
+          $ref: '#/components/schemas/Category'
+        photoUrls:
+          items:
+            type: string
+            xml:
+              name: photoUrl
+          type: array
+          xml:
+            wrapped: true
+        tags:
+          items:
+            $ref: '#/components/schemas/Tag'
+          type: array
+          xml:
+            wrapped: true
+        status:
+          description: pet status in the store
+          enum:
+          - available
+          - pending
+          - sold
+          type: string
+      required:
+      - name
+      - photoUrls
+      type: object
+      xml:
+        name: pet
+    test_query_style_form_explode_true_array_string_query_object_parameter:
+      properties:
+        values:
+          items:
+            type: string
+          type: array
+      type: object
+
--- a/samples/client/echo_api/java/native/build.gradle
+++ b/samples/client/echo_api/java/native/build.gradle
@ -0,0 +1,79 @@
+apply plugin: 'idea'
+apply plugin: 'eclipse'
+
+group = 'org.openapitools'
+version = '0.1.0'
+
+buildscript {
+    repositories {
+        mavenCentral()
+    }
+}
+
+repositories {
+    mavenCentral()
+}
+
+apply plugin: 'java'
+apply plugin: 'maven-publish'
+
+sourceCompatibility = JavaVersion.VERSION_11
+targetCompatibility = JavaVersion.VERSION_11
+
+// Some text from the schema is copy pasted into the source files as UTF-8
+// but the default still seems to be to use platform encoding
+tasks.withType(JavaCompile) {
+    configure(options) {
+        options.encoding = 'UTF-8'
+    }
+}
+javadoc {
+    options.encoding = 'UTF-8'
+}
+
+publishing {
+    publications {
+        maven(MavenPublication) {
+            artifactId = 'echo-api-native'
+            from components.java
+        }
+    }
+}
+
+task execute(type:JavaExec) {
+   main = System.getProperty('mainClass')
+   classpath = sourceSets.main.runtimeClasspath
+}
+
+task sourcesJar(type: Jar, dependsOn: classes) {
+    classifier = 'sources'
+    from sourceSets.main.allSource
+}
+
+task javadocJar(type: Jar, dependsOn: javadoc) {
+    classifier = 'javadoc'
+    from javadoc.destinationDir
+}
+
+artifacts {
+    archives sourcesJar
+    archives javadocJar
+}
+
+
+ext {
+    jackson_version = "2.14.1"
+    jakarta_annotation_version = "1.3.5"
+    junit_version = "4.13.2"
+}
+
+dependencies {
+    implementation "com.google.code.findbugs:jsr305:3.0.2"
+    implementation "com.fasterxml.jackson.core:jackson-core:$jackson_version"
+    implementation "com.fasterxml.jackson.core:jackson-annotations:$jackson_version"
+    implementation "com.fasterxml.jackson.core:jackson-databind:$jackson_version"
+    implementation "com.fasterxml.jackson.datatype:jackson-datatype-jsr310:$jackson_version"
+    implementation "org.openapitools:jackson-databind-nullable:0.2.1"
+    implementation "jakarta.annotation:jakarta.annotation-api:$jakarta_annotation_version"
+    testImplementation "junit:junit:$junit_version"
+}
--- a/samples/client/echo_api/java/native/build.sbt
+++ b/samples/client/echo_api/java/native/build.sbt
@ -0,0 +1 @@
+# TODO
--- a/samples/client/echo_api/java/native/docs/Category.md
+++ b/samples/client/echo_api/java/native/docs/Category.md
@ -0,0 +1,14 @@
+
+
+# Category
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**id** | **Long** |  |  [optional] |
+|**name** | **String** |  |  [optional] |
+
+
+
--- a/samples/client/echo_api/java/native/docs/Pet.md
+++ b/samples/client/echo_api/java/native/docs/Pet.md
@ -0,0 +1,28 @@
+
+
+# Pet
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**id** | **Long** |  |  [optional] |
+|**name** | **String** |  |  |
+|**category** | [**Category**](Category.md) |  |  [optional] |
+|**photoUrls** | **List&lt;String&gt;** |  |  |
+|**tags** | [**List&lt;Tag&gt;**](Tag.md) |  |  [optional] |
+|**status** | [**StatusEnum**](#StatusEnum) | pet status in the store |  [optional] |
+
+
+
+## Enum: StatusEnum
+
+| Name | Value |
+|---- | -----|
+| AVAILABLE | &quot;available&quot; |
+| PENDING | &quot;pending&quot; |
+| SOLD | &quot;sold&quot; |
+
+
+
--- a/samples/client/echo_api/java/native/docs/QueryApi.md
+++ b/samples/client/echo_api/java/native/docs/QueryApi.md
@ -0,0 +1,280 @@
+# QueryApi
+
+All URIs are relative to *http://localhost:3000*
+
+| Method | HTTP request | Description |
+|------------- | ------------- | -------------|
+| [**testQueryStyleFormExplodeTrueArrayString**](QueryApi.md#testQueryStyleFormExplodeTrueArrayString) | **GET** /query/style_form/explode_true/array_string | Test query parameter(s) |
+| [**testQueryStyleFormExplodeTrueArrayStringWithHttpInfo**](QueryApi.md#testQueryStyleFormExplodeTrueArrayStringWithHttpInfo) | **GET** /query/style_form/explode_true/array_string | Test query parameter(s) |
+| [**testQueryStyleFormExplodeTrueObject**](QueryApi.md#testQueryStyleFormExplodeTrueObject) | **GET** /query/style_form/explode_true/object | Test query parameter(s) |
+| [**testQueryStyleFormExplodeTrueObjectWithHttpInfo**](QueryApi.md#testQueryStyleFormExplodeTrueObjectWithHttpInfo) | **GET** /query/style_form/explode_true/object | Test query parameter(s) |
+
+
+
+## testQueryStyleFormExplodeTrueArrayString
+
+> String testQueryStyleFormExplodeTrueArrayString(queryObject)
+
+Test query parameter(s)
+
+Test query parameter(s)
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.QueryApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://localhost:3000");
+
+        QueryApi apiInstance = new QueryApi(defaultClient);
+        TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter queryObject = new HashMap(); // TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter | 
+        try {
+            String result = apiInstance.testQueryStyleFormExplodeTrueArrayString(queryObject);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling QueryApi#testQueryStyleFormExplodeTrueArrayString");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **queryObject** | [**TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter**](.md)|  | [optional] |
+
+### Return type
+
+**String**
+
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: Not defined
+- **Accept**: text/plain
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Successful operation |  -  |
+
+## testQueryStyleFormExplodeTrueArrayStringWithHttpInfo
+
+> ApiResponse<String> testQueryStyleFormExplodeTrueArrayString testQueryStyleFormExplodeTrueArrayStringWithHttpInfo(queryObject)
+
+Test query parameter(s)
+
+Test query parameter(s)
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.ApiResponse;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.QueryApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://localhost:3000");
+
+        QueryApi apiInstance = new QueryApi(defaultClient);
+        TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter queryObject = new HashMap(); // TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter | 
+        try {
+            ApiResponse<String> response = apiInstance.testQueryStyleFormExplodeTrueArrayStringWithHttpInfo(queryObject);
+            System.out.println("Status code: " + response.getStatusCode());
+            System.out.println("Response headers: " + response.getHeaders());
+            System.out.println("Response body: " + response.getData());
+        } catch (ApiException e) {
+            System.err.println("Exception when calling QueryApi#testQueryStyleFormExplodeTrueArrayString");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            System.err.println("Reason: " + e.getResponseBody());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **queryObject** | [**TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter**](.md)|  | [optional] |
+
+### Return type
+
+ApiResponse<**String**>
+
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: Not defined
+- **Accept**: text/plain
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Successful operation |  -  |
+
+
+## testQueryStyleFormExplodeTrueObject
+
+> String testQueryStyleFormExplodeTrueObject(queryObject)
+
+Test query parameter(s)
+
+Test query parameter(s)
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.QueryApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://localhost:3000");
+
+        QueryApi apiInstance = new QueryApi(defaultClient);
+        Pet queryObject = new HashMap(); // Pet | 
+        try {
+            String result = apiInstance.testQueryStyleFormExplodeTrueObject(queryObject);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling QueryApi#testQueryStyleFormExplodeTrueObject");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **queryObject** | [**Pet**](.md)|  | [optional] |
+
+### Return type
+
+**String**
+
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: Not defined
+- **Accept**: text/plain
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Successful operation |  -  |
+
+## testQueryStyleFormExplodeTrueObjectWithHttpInfo
+
+> ApiResponse<String> testQueryStyleFormExplodeTrueObject testQueryStyleFormExplodeTrueObjectWithHttpInfo(queryObject)
+
+Test query parameter(s)
+
+Test query parameter(s)
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.ApiResponse;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.QueryApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://localhost:3000");
+
+        QueryApi apiInstance = new QueryApi(defaultClient);
+        Pet queryObject = new HashMap(); // Pet | 
+        try {
+            ApiResponse<String> response = apiInstance.testQueryStyleFormExplodeTrueObjectWithHttpInfo(queryObject);
+            System.out.println("Status code: " + response.getStatusCode());
+            System.out.println("Response headers: " + response.getHeaders());
+            System.out.println("Response body: " + response.getData());
+        } catch (ApiException e) {
+            System.err.println("Exception when calling QueryApi#testQueryStyleFormExplodeTrueObject");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            System.err.println("Reason: " + e.getResponseBody());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **queryObject** | [**Pet**](.md)|  | [optional] |
+
+### Return type
+
+ApiResponse<**String**>
+
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: Not defined
+- **Accept**: text/plain
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Successful operation |  -  |
+
--- a/samples/client/echo_api/java/native/docs/Tag.md
+++ b/samples/client/echo_api/java/native/docs/Tag.md
@ -0,0 +1,14 @@
+
+
+# Tag
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**id** | **Long** |  |  [optional] |
+|**name** | **String** |  |  [optional] |
+
+
+
--- a/samples/client/echo_api/java/native/docs/TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter.md
+++ b/samples/client/echo_api/java/native/docs/TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter.md
@ -0,0 +1,13 @@
+
+
+# TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**values** | **List&lt;String&gt;** |  |  [optional] |
+
+
+
--- a/samples/client/echo_api/java/native/git_push.sh
+++ b/samples/client/echo_api/java/native/git_push.sh
@ -0,0 +1,57 @@
+#!/bin/sh
+# ref: https://help.github.com/articles/adding-an-existing-project-to-github-using-the-command-line/
+#
+# Usage example: /bin/sh ./git_push.sh wing328 openapi-petstore-perl "minor update" "gitlab.com"
+
+git_user_id=$1
+git_repo_id=$2
+release_note=$3
+git_host=$4
+
+if [ "$git_host" = "" ]; then
+    git_host="github.com"
+    echo "[INFO] No command line input provided. Set \$git_host to $git_host"
+fi
+
+if [ "$git_user_id" = "" ]; then
+    git_user_id="GIT_USER_ID"
+    echo "[INFO] No command line input provided. Set \$git_user_id to $git_user_id"
+fi
+
+if [ "$git_repo_id" = "" ]; then
+    git_repo_id="GIT_REPO_ID"
+    echo "[INFO] No command line input provided. Set \$git_repo_id to $git_repo_id"
+fi
+
+if [ "$release_note" = "" ]; then
+    release_note="Minor update"
+    echo "[INFO] No command line input provided. Set \$release_note to $release_note"
+fi
+
+# Initialize the local directory as a Git repository
+git init
+
+# Adds the files in the local repository and stages them for commit.
+git add .
+
+# Commits the tracked changes and prepares them to be pushed to a remote repository.
+git commit -m "$release_note"
+
+# Sets the new remote
+git_remote=$(git remote)
+if [ "$git_remote" = "" ]; then # git remote not defined
+
+    if [ "$GIT_TOKEN" = "" ]; then
+        echo "[INFO] \$GIT_TOKEN (environment variable) is not set. Using the git credential in your environment."
+        git remote add origin https://${git_host}/${git_user_id}/${git_repo_id}.git
+    else
+        git remote add origin https://${git_user_id}:"${GIT_TOKEN}"@${git_host}/${git_user_id}/${git_repo_id}.git
+    fi
+
+fi
+
+git pull origin master
+
+# Pushes (Forces) the changes in the local repository up to the remote repository
+echo "Git pushing to https://${git_host}/${git_user_id}/${git_repo_id}.git"
+git push origin master 2>&1 | grep -v 'To https'
--- a/samples/client/echo_api/java/native/gradle.properties
+++ b/samples/client/echo_api/java/native/gradle.properties
--- a/samples/client/echo_api/java/native/gradle/wrapper/gradle-wrapper.jar
+++ b/samples/client/echo_api/java/native/gradle/wrapper/gradle-wrapper.jar
--- a/samples/client/echo_api/java/native/gradle/wrapper/gradle-wrapper.properties
+++ b/samples/client/echo_api/java/native/gradle/wrapper/gradle-wrapper.properties
@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.2-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
--- a/samples/client/echo_api/java/native/gradlew
+++ b/samples/client/echo_api/java/native/gradlew
@ -0,0 +1,234 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+APP_NAME="Gradle"
+APP_BASE_NAME=${0##*/}
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='-Dfile.encoding=UTF-8 "-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"
--- a/samples/client/echo_api/java/native/gradlew.bat
+++ b/samples/client/echo_api/java/native/gradlew.bat
@ -0,0 +1,89 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=-Dfile.encoding=UTF-8 "-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
--- a/samples/client/echo_api/java/native/pom.xml
+++ b/samples/client/echo_api/java/native/pom.xml
@ -0,0 +1,216 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>org.openapitools</groupId>
+    <artifactId>echo-api-native</artifactId>
+    <packaging>jar</packaging>
+    <name>echo-api-native</name>
+    <version>0.1.0</version>
+    <url>https://github.com/openapitools/openapi-generator</url>
+    <description>OpenAPI Java</description>
+    <scm>
+        <connection>scm:git:git@github.com:openapitools/openapi-generator.git</connection>
+        <developerConnection>scm:git:git@github.com:openapitools/openapi-generator.git</developerConnection>
+        <url>https://github.com/openapitools/openapi-generator</url>
+    </scm>
+
+    <licenses>
+        <license>
+            <name>Unlicense</name>
+            <url>http://www.apache.org/licenses/LICENSE-2.0.html</url>
+            <distribution>repo</distribution>
+        </license>
+    </licenses>
+
+    <developers>
+        <developer>
+            <name>OpenAPI-Generator Contributors</name>
+            <email>team@openapitools.org</email>
+            <organization>OpenAPITools.org</organization>
+            <organizationUrl>http://openapitools.org</organizationUrl>
+        </developer>
+    </developers>
+
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>maven-enforcer-plugin</artifactId>
+                <version>3.1.0</version>
+                <executions>
+                    <execution>
+                        <id>enforce-maven</id>
+                        <goals>
+                            <goal>enforce</goal>
+                        </goals>
+                        <configuration>
+                            <rules>
+                                <requireMavenVersion>
+                                    <version>3</version>
+                                </requireMavenVersion>
+                                <requireJavaVersion>
+                                    <version>11</version>
+                                </requireJavaVersion>
+                            </rules>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <version>3.0.0-M7</version>
+                <configuration>
+                    <systemPropertyVariables>
+                        <loggerPath>conf/log4j.properties</loggerPath>
+                    </systemPropertyVariables>
+                    <argLine>-Xms512m -Xmx1500m</argLine>
+                    <parallel>methods</parallel>
+                    <threadCount>10</threadCount>
+                </configuration>
+            </plugin>
+            <plugin>
+                <artifactId>maven-dependency-plugin</artifactId>
+                <version>3.3.0</version>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>copy-dependencies</goal>
+                        </goals>
+                        <configuration>
+                            <outputDirectory>${project.build.directory}/lib</outputDirectory>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+
+            <!-- attach test jar -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-jar-plugin</artifactId>
+                <version>3.3.0</version>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>test-jar</goal>
+                        </goals>
+                    </execution>
+                </executions>
+                <configuration>
+                </configuration>
+            </plugin>
+            <plugin>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.10.1</version>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-javadoc-plugin</artifactId>
+                <version>3.4.1</version>
+                <executions>
+                    <execution>
+                        <id>attach-javadocs</id>
+                        <goals>
+                            <goal>jar</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <artifactId>maven-source-plugin</artifactId>
+                <version>3.2.1</version>
+                <executions>
+                    <execution>
+                        <id>attach-sources</id>
+                        <goals>
+                            <goal>jar-no-fork</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
+    <profiles>
+        <profile>
+            <id>sign-artifacts</id>
+            <build>
+                <plugins>
+                    <plugin>
+                        <artifactId>maven-gpg-plugin</artifactId>
+                        <version>3.0.1</version>
+                        <executions>
+                            <execution>
+                                <id>sign-artifacts</id>
+                                <phase>verify</phase>
+                                <goals>
+                                    <goal>sign</goal>
+                                </goals>
+                            </execution>
+                        </executions>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
+    </profiles>
+
+    <dependencies>
+
+        <!-- JSON processing: jackson -->
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-core</artifactId>
+            <version>${jackson-version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-annotations</artifactId>
+            <version>${jackson-version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+            <version>${jackson-version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.datatype</groupId>
+            <artifactId>jackson-datatype-jsr310</artifactId>
+            <version>${jackson-version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.openapitools</groupId>
+            <artifactId>jackson-databind-nullable</artifactId>
+            <version>${jackson-databind-nullable-version}</version>
+        </dependency>
+
+        <!-- @Nullable annotation -->
+        <dependency>
+            <groupId>com.google.code.findbugs</groupId>
+            <artifactId>jsr305</artifactId>
+            <version>3.0.2</version>
+        </dependency>
+        <dependency>
+            <groupId>jakarta.annotation</groupId>
+            <artifactId>jakarta.annotation-api</artifactId>
+            <version>${jakarta-annotation-version}</version>
+            <scope>provided</scope>
+        </dependency>
+
+        <!-- test dependencies -->
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>${junit-version}</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
+        <jackson-version>2.14.1</jackson-version>
+        <jackson-databind-nullable-version>0.2.4</jackson-databind-nullable-version>
+        <jakarta-annotation-version>1.3.5</jakarta-annotation-version>
+        <junit-version>4.13.2</junit-version>
+    </properties>
+</project>
--- a/samples/client/echo_api/java/native/settings.gradle
+++ b/samples/client/echo_api/java/native/settings.gradle
@ -0,0 +1 @@
+rootProject.name = "echo-api-native"
--- a/samples/client/echo_api/java/native/src/main/AndroidManifest.xml
+++ b/samples/client/echo_api/java/native/src/main/AndroidManifest.xml
@ -0,0 +1,3 @@
+<manifest package="org.openapitools.client" xmlns:android="http://schemas.android.com/apk/res/android">
+    <application />
+</manifest>
--- a/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/ApiClient.java
@ -0,0 +1,456 @@
+/*
+ * Echo Server API
+ * Echo Server API
+ *
+ * The version of the OpenAPI document: 0.1.0
+ * Contact: team@openapitools.org
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.databind.DeserializationFeature;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializationFeature;
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
+import org.openapitools.jackson.nullable.JsonNullableModule;
+
+import java.io.InputStream;
+import java.net.URI;
+import java.net.URLEncoder;
+import java.net.http.HttpClient;
+import java.net.http.HttpConnectTimeoutException;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.time.Duration;
+import java.time.OffsetDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.StringJoiner;
+import java.util.function.Consumer;
+import java.util.stream.Collectors;
+
+import static java.nio.charset.StandardCharsets.UTF_8;
+
+/**
+ * Configuration and utility class for API clients.
+ *
+ * <p>This class can be constructed and modified, then used to instantiate the
+ * various API classes. The API classes use the settings in this class to
+ * configure themselves, but otherwise do not store a link to this class.</p>
+ *
+ * <p>This class is mutable and not synchronized, so it is not thread-safe.
+ * The API classes generated from this are immutable and thread-safe.</p>
+ *
+ * <p>The setter methods of this class return the current object to facilitate
+ * a fluent style of configuration.</p>
+ */
+@javax.annotation.processing.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
+public class ApiClient {
+
+  private HttpClient.Builder builder;
+  private ObjectMapper mapper;
+  private String scheme;
+  private String host;
+  private int port;
+  private String basePath;
+  private Consumer<HttpRequest.Builder> interceptor;
+  private Consumer<HttpResponse<InputStream>> responseInterceptor;
+  private Consumer<HttpResponse<String>> asyncResponseInterceptor;
+  private Duration readTimeout;
+  private Duration connectTimeout;
+
+  private static String valueToString(Object value) {
+    if (value == null) {
+      return "";
+    }
+    if (value instanceof OffsetDateTime) {
+      return ((OffsetDateTime) value).format(DateTimeFormatter.ISO_OFFSET_DATE_TIME);
+    }
+    return value.toString();
+  }
+
+  /**
+   * URL encode a string in the UTF-8 encoding.
+   *
+   * @param s String to encode.
+   * @return URL-encoded representation of the input string.
+   */
+  public static String urlEncode(String s) {
+    return URLEncoder.encode(s, UTF_8).replaceAll("\\+", "%20");
+  }
+
+  /**
+   * Convert a URL query name/value parameter to a list of encoded {@link Pair}
+   * objects.
+   *
+   * <p>The value can be null, in which case an empty list is returned.</p>
+   *
+   * @param name The query name parameter.
+   * @param value The query value, which may not be a collection but may be
+   *              null.
+   * @return A singleton list of the {@link Pair} objects representing the input
+   * parameters, which is encoded for use in a URL. If the value is null, an
+   * empty list is returned.
+   */
+  public static List<Pair> parameterToPairs(String name, Object value) {
+    if (name == null || name.isEmpty() || value == null) {
+      return Collections.emptyList();
+    }
+    return Collections.singletonList(new Pair(urlEncode(name), urlEncode(valueToString(value))));
+  }
+
+  /**
+   * Convert a URL query name/collection parameter to a list of encoded
+   * {@link Pair} objects.
+   *
+   * @param collectionFormat The swagger collectionFormat string (csv, tsv, etc).
+   * @param name The query name parameter.
+   * @param values A collection of values for the given query name, which may be
+   *               null.
+   * @return A list of {@link Pair} objects representing the input parameters,
+   * which is encoded for use in a URL. If the values collection is null, an
+   * empty list is returned.
+   */
+  public static List<Pair> parameterToPairs(
+      String collectionFormat, String name, Collection<?> values) {
+    if (name == null || name.isEmpty() || values == null || values.isEmpty()) {
+      return Collections.emptyList();
+    }
+
+    // get the collection format (default: csv)
+    String format = collectionFormat == null || collectionFormat.isEmpty() ? "csv" : collectionFormat;
+
+    // create the params based on the collection format
+    if ("multi".equals(format)) {
+      return values.stream()
+          .map(value -> new Pair(urlEncode(name), urlEncode(valueToString(value))))
+          .collect(Collectors.toList());
+    }
+
+    String delimiter;
+    switch(format) {
+      case "csv":
+        delimiter = urlEncode(",");
+        break;
+      case "ssv":
+        delimiter = urlEncode(" ");
+        break;
+      case "tsv":
+        delimiter = urlEncode("\t");
+        break;
+      case "pipes":
+        delimiter = urlEncode("|");
+        break;
+      default:
+        throw new IllegalArgumentException("Illegal collection format: " + collectionFormat);
+    }
+
+    StringJoiner joiner = new StringJoiner(delimiter);
+    for (Object value : values) {
+      joiner.add(urlEncode(valueToString(value)));
+    }
+
+    return Collections.singletonList(new Pair(urlEncode(name), joiner.toString()));
+  }
+
+  /**
+   * Create an instance of ApiClient.
+   */
+  public ApiClient() {
+    this.builder = createDefaultHttpClientBuilder();
+    this.mapper = createDefaultObjectMapper();
+    updateBaseUri(getDefaultBaseUri());
+    interceptor = null;
+    readTimeout = null;
+    connectTimeout = null;
+    responseInterceptor = null;
+    asyncResponseInterceptor = null;
+  }
+
+  /**
+   * Create an instance of ApiClient.
+   *
+   * @param builder Http client builder.
+   * @param mapper Object mapper.
+   * @param baseUri Base URI
+   */
+  public ApiClient(HttpClient.Builder builder, ObjectMapper mapper, String baseUri) {
+    this.builder = builder;
+    this.mapper = mapper;
+    updateBaseUri(baseUri != null ? baseUri : getDefaultBaseUri());
+    interceptor = null;
+    readTimeout = null;
+    connectTimeout = null;
+    responseInterceptor = null;
+    asyncResponseInterceptor = null;
+  }
+
+  protected ObjectMapper createDefaultObjectMapper() {
+    ObjectMapper mapper = new ObjectMapper();
+    mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
+    mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
+    mapper.configure(DeserializationFeature.FAIL_ON_INVALID_SUBTYPE, false);
+    mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
+    mapper.enable(SerializationFeature.WRITE_ENUMS_USING_TO_STRING);
+    mapper.enable(DeserializationFeature.READ_ENUMS_USING_TO_STRING);
+    mapper.disable(DeserializationFeature.ADJUST_DATES_TO_CONTEXT_TIME_ZONE);
+    mapper.registerModule(new JavaTimeModule());
+    mapper.registerModule(new JsonNullableModule());
+    return mapper;
+  }
+
+  protected String getDefaultBaseUri() {
+    return "http://localhost:3000";
+  }
+
+  protected HttpClient.Builder createDefaultHttpClientBuilder() {
+    return HttpClient.newBuilder();
+  }
+
+  public void updateBaseUri(String baseUri) {
+    URI uri = URI.create(baseUri);
+    scheme = uri.getScheme();
+    host = uri.getHost();
+    port = uri.getPort();
+    basePath = uri.getRawPath();
+  }
+
+  /**
+   * Set a custom {@link HttpClient.Builder} object to use when creating the
+   * {@link HttpClient} that is used by the API client.
+   *
+   * @param builder Custom client builder.
+   * @return This object.
+   */
+  public ApiClient setHttpClientBuilder(HttpClient.Builder builder) {
+    this.builder = builder;
+    return this;
+  }
+
+  /**
+   * Get an {@link HttpClient} based on the current {@link HttpClient.Builder}.
+   *
+   * <p>The returned object is immutable and thread-safe.</p>
+   *
+   * @return The HTTP client.
+   */
+  public HttpClient getHttpClient() {
+    return builder.build();
+  }
+
+  /**
+   * Set a custom {@link ObjectMapper} to serialize and deserialize the request
+   * and response bodies.
+   *
+   * @param mapper Custom object mapper.
+   * @return This object.
+   */
+  public ApiClient setObjectMapper(ObjectMapper mapper) {
+    this.mapper = mapper;
+    return this;
+  }
+
+  /**
+   * Get a copy of the current {@link ObjectMapper}.
+   *
+   * @return A copy of the current object mapper.
+   */
+  public ObjectMapper getObjectMapper() {
+    return mapper.copy();
+  }
+
+  /**
+   * Set a custom host name for the target service.
+   *
+   * @param host The host name of the target service.
+   * @return This object.
+   */
+  public ApiClient setHost(String host) {
+    this.host = host;
+    return this;
+  }
+
+  /**
+   * Set a custom port number for the target service.
+   *
+   * @param port The port of the target service. Set this to -1 to reset the
+   *             value to the default for the scheme.
+   * @return This object.
+   */
+  public ApiClient setPort(int port) {
+    this.port = port;
+    return this;
+  }
+
+  /**
+   * Set a custom base path for the target service, for example '/v2'.
+   *
+   * @param basePath The base path against which the rest of the path is
+   *                 resolved.
+   * @return This object.
+   */
+  public ApiClient setBasePath(String basePath) {
+    this.basePath = basePath;
+    return this;
+  }
+
+  /**
+   * Get the base URI to resolve the endpoint paths against.
+   *
+   * @return The complete base URI that the rest of the API parameters are
+   * resolved against.
+   */
+  public String getBaseUri() {
+    return scheme + "://" + host + (port == -1 ? "" : ":" + port) + basePath;
+  }
+
+  /**
+   * Set a custom scheme for the target service, for example 'https'.
+   *
+   * @param scheme The scheme of the target service
+   * @return This object.
+   */
+  public ApiClient setScheme(String scheme){
+    this.scheme = scheme;
+    return this;
+  }
+
+  /**
+   * Set a custom request interceptor.
+   *
+   * <p>A request interceptor is a mechanism for altering each request before it
+   * is sent. After the request has been fully configured but not yet built, the
+   * request builder is passed into this function for further modification,
+   * after which it is sent out.</p>
+   *
+   * <p>This is useful for altering the requests in a custom manner, such as
+   * adding headers. It could also be used for logging and monitoring.</p>
+   *
+   * @param interceptor A function invoked before creating each request. A value
+   *                    of null resets the interceptor to a no-op.
+   * @return This object.
+   */
+  public ApiClient setRequestInterceptor(Consumer<HttpRequest.Builder> interceptor) {
+    this.interceptor = interceptor;
+    return this;
+  }
+
+  /**
+   * Get the custom interceptor.
+   *
+   * @return The custom interceptor that was set, or null if there isn't any.
+   */
+  public Consumer<HttpRequest.Builder> getRequestInterceptor() {
+    return interceptor;
+  }
+
+  /**
+   * Set a custom response interceptor.
+   *
+   * <p>This is useful for logging, monitoring or extraction of header variables</p>
+   *
+   * @param interceptor A function invoked before creating each request. A value
+   *                    of null resets the interceptor to a no-op.
+   * @return This object.
+   */
+  public ApiClient setResponseInterceptor(Consumer<HttpResponse<InputStream>> interceptor) {
+    this.responseInterceptor = interceptor;
+    return this;
+  }
+
+ /**
+   * Get the custom response interceptor.
+   *
+   * @return The custom interceptor that was set, or null if there isn't any.
+   */
+  public Consumer<HttpResponse<InputStream>> getResponseInterceptor() {
+    return responseInterceptor;
+  }
+
+  /**
+   * Set a custom async response interceptor. Use this interceptor when asyncNative is set to 'true'.
+   *
+   * <p>This is useful for logging, monitoring or extraction of header variables</p>
+   *
+   * @param interceptor A function invoked before creating each request. A value
+   *                    of null resets the interceptor to a no-op.
+   * @return This object.
+   */
+  public ApiClient setAsyncResponseInterceptor(Consumer<HttpResponse<String>> interceptor) {
+    this.asyncResponseInterceptor = interceptor;
+    return this;
+  }
+
+ /**
+   * Get the custom async response interceptor. Use this interceptor when asyncNative is set to 'true'.
+   *
+   * @return The custom interceptor that was set, or null if there isn't any.
+   */
+  public Consumer<HttpResponse<String>> getAsyncResponseInterceptor() {
+    return asyncResponseInterceptor;
+  }
+
+  /**
+   * Set the read timeout for the http client.
+   *
+   * <p>This is the value used by default for each request, though it can be
+   * overridden on a per-request basis with a request interceptor.</p>
+   *
+   * @param readTimeout The read timeout used by default by the http client.
+   *                    Setting this value to null resets the timeout to an
+   *                    effectively infinite value.
+   * @return This object.
+   */
+  public ApiClient setReadTimeout(Duration readTimeout) {
+    this.readTimeout = readTimeout;
+    return this;
+  }
+
+  /**
+   * Get the read timeout that was set.
+   *
+   * @return The read timeout, or null if no timeout was set. Null represents
+   * an infinite wait time.
+   */
+  public Duration getReadTimeout() {
+    return readTimeout;
+  }
+  /**
+   * Sets the connect timeout (in milliseconds) for the http client.
+   *
+   * <p> In the case where a new connection needs to be established, if
+   * the connection cannot be established within the given {@code
+   * duration}, then {@link HttpClient#send(HttpRequest,BodyHandler)
+   * HttpClient::send} throws an {@link HttpConnectTimeoutException}, or
+   * {@link HttpClient#sendAsync(HttpRequest,BodyHandler)
+   * HttpClient::sendAsync} completes exceptionally with an
+   * {@code HttpConnectTimeoutException}. If a new connection does not
+   * need to be established, for example if a connection can be reused
+   * from a previous request, then this timeout duration has no effect.
+   *
+   * @param connectTimeout connection timeout in milliseconds
+   *
+   * @return This object.
+   */
+  public ApiClient setConnectTimeout(Duration connectTimeout) {
+    this.connectTimeout = connectTimeout;
+    this.builder.connectTimeout(connectTimeout);
+    return this;
+  }
+
+  /**
+   * Get connection timeout (in milliseconds).
+   *
+   * @return Timeout in milliseconds
+   */
+  public Duration getConnectTimeout() {
+    return connectTimeout;
+  }
+}
--- a/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/ApiException.java
+++ b/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/ApiException.java
@ -0,0 +1,90 @@
+/*
+ * Echo Server API
+ * Echo Server API
+ *
+ * The version of the OpenAPI document: 0.1.0
+ * Contact: team@openapitools.org
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client;
+
+import java.net.http.HttpHeaders;
+
+@javax.annotation.processing.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
+public class ApiException extends Exception {
+    private int code = 0;
+    private HttpHeaders responseHeaders = null;
+    private String responseBody = null;
+
+    public ApiException() {}
+
+    public ApiException(Throwable throwable) {
+        super(throwable);
+    }
+
+    public ApiException(String message) {
+        super(message);
+    }
+
+    public ApiException(String message, Throwable throwable, int code, HttpHeaders responseHeaders, String responseBody) {
+        super(message, throwable);
+        this.code = code;
+        this.responseHeaders = responseHeaders;
+        this.responseBody = responseBody;
+    }
+
+    public ApiException(String message, int code, HttpHeaders responseHeaders, String responseBody) {
+        this(message, (Throwable) null, code, responseHeaders, responseBody);
+    }
+
+    public ApiException(String message, Throwable throwable, int code, HttpHeaders responseHeaders) {
+        this(message, throwable, code, responseHeaders, null);
+    }
+
+    public ApiException(int code, HttpHeaders responseHeaders, String responseBody) {
+        this((String) null, (Throwable) null, code, responseHeaders, responseBody);
+    }
+
+    public ApiException(int code, String message) {
+        super(message);
+        this.code = code;
+    }
+
+    public ApiException(int code, String message, HttpHeaders responseHeaders, String responseBody) {
+        this(code, message);
+        this.responseHeaders = responseHeaders;
+        this.responseBody = responseBody;
+    }
+
+    /**
+     * Get the HTTP status code.
+     *
+     * @return HTTP status code
+     */
+    public int getCode() {
+        return code;
+    }
+
+    /**
+     * Get the HTTP response headers.
+     *
+     * @return Headers as an HttpHeaders object
+     */
+    public HttpHeaders getResponseHeaders() {
+        return responseHeaders;
+    }
+
+    /**
+     * Get the HTTP response body.
+     *
+     * @return Response body in the form of string
+     */
+    public String getResponseBody() {
+        return responseBody;
+    }
+}
--- a/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/ApiResponse.java
+++ b/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/ApiResponse.java
@ -0,0 +1,59 @@
+/*
+ * Echo Server API
+ * Echo Server API
+ *
+ * The version of the OpenAPI document: 0.1.0
+ * Contact: team@openapitools.org
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client;
+
+import java.util.List;
+import java.util.Map;
+
+/**
+ * API response returned by API call.
+ *
+ * @param <T> The type of data that is deserialized from response body
+ */
+public class ApiResponse<T> {
+    final private int statusCode;
+    final private Map<String, List<String>> headers;
+    final private T data;
+
+    /**
+     * @param statusCode The status code of HTTP response
+     * @param headers The headers of HTTP response
+     */
+    public ApiResponse(int statusCode, Map<String, List<String>> headers) {
+        this(statusCode, headers, null);
+    }
+
+    /**
+     * @param statusCode The status code of HTTP response
+     * @param headers The headers of HTTP response
+     * @param data The object deserialized from response bod
+     */
+    public ApiResponse(int statusCode, Map<String, List<String>> headers, T data) {
+        this.statusCode = statusCode;
+        this.headers = headers;
+        this.data = data;
+    }
+
+    public int getStatusCode() {
+        return statusCode;
+    }
+
+    public Map<String, List<String>> getHeaders() {
+        return headers;
+    }
+
+    public T getData() {
+        return data;
+    }
+}
--- a/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/Configuration.java
+++ b/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/Configuration.java
@ -0,0 +1,39 @@
+/*
+ * Echo Server API
+ * Echo Server API
+ *
+ * The version of the OpenAPI document: 0.1.0
+ * Contact: team@openapitools.org
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client;
+
+@javax.annotation.processing.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
+public class Configuration {
+    private static ApiClient defaultApiClient = new ApiClient();
+
+    /**
+     * Get the default API client, which would be used when creating API
+     * instances without providing an API client.
+     *
+     * @return Default API client
+     */
+    public static ApiClient getDefaultApiClient() {
+        return defaultApiClient;
+    }
+
+    /**
+     * Set the default API client, which would be used when creating API
+     * instances without providing an API client.
+     *
+     * @param apiClient API client
+     */
+    public static void setDefaultApiClient(ApiClient apiClient) {
+        defaultApiClient = apiClient;
+    }
+}
--- a/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/JSON.java
+++ b/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/JSON.java
@ -0,0 +1,248 @@
+package org.openapitools.client;
+
+import com.fasterxml.jackson.annotation.*;
+import com.fasterxml.jackson.databind.*;
+import org.openapitools.jackson.nullable.JsonNullableModule;
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
+import org.openapitools.client.model.*;
+
+import java.text.DateFormat;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+
+@javax.annotation.processing.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
+public class JSON {
+  private ObjectMapper mapper;
+
+  public JSON() {
+    mapper = new ObjectMapper();
+    mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
+    mapper.configure(MapperFeature.ALLOW_COERCION_OF_SCALARS, false);
+    mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, true);
+    mapper.configure(DeserializationFeature.FAIL_ON_INVALID_SUBTYPE, true);
+    mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
+    mapper.enable(SerializationFeature.WRITE_ENUMS_USING_TO_STRING);
+    mapper.enable(DeserializationFeature.READ_ENUMS_USING_TO_STRING);
+    mapper.setDateFormat(new RFC3339DateFormat());
+    mapper.registerModule(new JavaTimeModule());
+    JsonNullableModule jnm = new JsonNullableModule();
+    mapper.registerModule(jnm);
+  }
+
+  /**
+   * Set the date format for JSON (de)serialization with Date properties.
+   *
+   * @param dateFormat Date format
+   */
+  public void setDateFormat(DateFormat dateFormat) {
+    mapper.setDateFormat(dateFormat);
+  }
+
+  /**
+   * Get the object mapper
+   *
+   * @return object mapper
+   */
+  public ObjectMapper getMapper() { return mapper; }
+
+  /**
+   * Returns the target model class that should be used to deserialize the input data.
+   * The discriminator mappings are used to determine the target model class.
+   *
+   * @param node The input data.
+   * @param modelClass The class that contains the discriminator mappings.
+   *
+   * @return the target model class.
+   */
+  public static Class<?> getClassForElement(JsonNode node, Class<?> modelClass) {
+    ClassDiscriminatorMapping cdm = modelDiscriminators.get(modelClass);
+    if (cdm != null) {
+      return cdm.getClassForElement(node, new HashSet<Class<?>>());
+    }
+    return null;
+  }
+
+  /**
+   * Helper class to register the discriminator mappings.
+   */
+  private static class ClassDiscriminatorMapping {
+    // The model class name.
+    Class<?> modelClass;
+    // The name of the discriminator property.
+    String discriminatorName;
+    // The discriminator mappings for a model class.
+    Map<String, Class<?>> discriminatorMappings;
+
+    // Constructs a new class discriminator.
+    ClassDiscriminatorMapping(Class<?> cls, String propertyName, Map<String, Class<?>> mappings) {
+      modelClass = cls;
+      discriminatorName = propertyName;
+      discriminatorMappings = new HashMap<String, Class<?>>();
+      if (mappings != null) {
+        discriminatorMappings.putAll(mappings);
+      }
+    }
+
+    // Return the name of the discriminator property for this model class.
+    String getDiscriminatorPropertyName() {
+      return discriminatorName;
+    }
+
+    // Return the discriminator value or null if the discriminator is not
+    // present in the payload.
+    String getDiscriminatorValue(JsonNode node) {
+      // Determine the value of the discriminator property in the input data.
+      if (discriminatorName != null) {
+        // Get the value of the discriminator property, if present in the input payload.
+        node = node.get(discriminatorName);
+        if (node != null && node.isValueNode()) {
+          String discrValue = node.asText();
+          if (discrValue != null) {
+            return discrValue;
+          }
+        }
+      }
+      return null;
+    }
+
+    /**
+     * Returns the target model class that should be used to deserialize the input data.
+     * This function can be invoked for anyOf/oneOf composed models with discriminator mappings.
+     * The discriminator mappings are used to determine the target model class.
+     *
+     * @param node The input data.
+     * @param visitedClasses The set of classes that have already been visited.
+     *
+     * @return the target model class.
+     */
+    Class<?> getClassForElement(JsonNode node, Set<Class<?>> visitedClasses) {
+      if (visitedClasses.contains(modelClass)) {
+        // Class has already been visited.
+        return null;
+      }
+      // Determine the value of the discriminator property in the input data.
+      String discrValue = getDiscriminatorValue(node);
+      if (discrValue == null) {
+        return null;
+      }
+      Class<?> cls = discriminatorMappings.get(discrValue);
+      // It may not be sufficient to return this cls directly because that target class
+      // may itself be a composed schema, possibly with its own discriminator.
+      visitedClasses.add(modelClass);
+      for (Class<?> childClass : discriminatorMappings.values()) {
+        ClassDiscriminatorMapping childCdm = modelDiscriminators.get(childClass);
+        if (childCdm == null) {
+          continue;
+        }
+        if (!discriminatorName.equals(childCdm.discriminatorName)) {
+          discrValue = getDiscriminatorValue(node);
+          if (discrValue == null) {
+            continue;
+          }
+        }
+        if (childCdm != null) {
+          // Recursively traverse the discriminator mappings.
+          Class<?> childDiscr = childCdm.getClassForElement(node, visitedClasses);
+          if (childDiscr != null) {
+            return childDiscr;
+          }
+        }
+      }
+      return cls;
+    }
+  }
+
+  /**
+   * Returns true if inst is an instance of modelClass in the OpenAPI model hierarchy.
+   *
+   * The Java class hierarchy is not implemented the same way as the OpenAPI model hierarchy,
+   * so it's not possible to use the instanceof keyword.
+   *
+   * @param modelClass A OpenAPI model class.
+   * @param inst The instance object.
+   * @param visitedClasses The set of classes that have already been visited.
+   *
+   * @return true if inst is an instance of modelClass in the OpenAPI model hierarchy.
+   */
+  public static boolean isInstanceOf(Class<?> modelClass, Object inst, Set<Class<?>> visitedClasses) {
+    if (modelClass.isInstance(inst)) {
+      // This handles the 'allOf' use case with single parent inheritance.
+      return true;
+    }
+    if (visitedClasses.contains(modelClass)) {
+      // This is to prevent infinite recursion when the composed schemas have
+      // a circular dependency.
+      return false;
+    }
+    visitedClasses.add(modelClass);
+
+    // Traverse the oneOf/anyOf composed schemas.
+    Map<String, Class<?>> descendants = modelDescendants.get(modelClass);
+    if (descendants != null) {
+      for (Class<?> childType : descendants.values()) {
+        if (isInstanceOf(childType, inst, visitedClasses)) {
+          return true;
+        }
+      }
+    }
+    return false;
+  }
+
+  /**
+   * A map of discriminators for all model classes.
+   */
+  private static Map<Class<?>, ClassDiscriminatorMapping> modelDiscriminators = new HashMap<>();
+
+  /**
+   * A map of oneOf/anyOf descendants for each model class.
+   */
+  private static Map<Class<?>, Map<String, Class<?>>> modelDescendants = new HashMap<>();
+
+  /**
+    * Register a model class discriminator.
+    *
+    * @param modelClass the model class
+    * @param discriminatorPropertyName the name of the discriminator property
+    * @param mappings a map with the discriminator mappings.
+    */
+  public static void registerDiscriminator(Class<?> modelClass, String discriminatorPropertyName, Map<String, Class<?>> mappings) {
+    ClassDiscriminatorMapping m = new ClassDiscriminatorMapping(modelClass, discriminatorPropertyName, mappings);
+    modelDiscriminators.put(modelClass, m);
+  }
+
+  /**
+    * Register the oneOf/anyOf descendants of the modelClass.
+    *
+    * @param modelClass the model class
+    * @param descendants a map of oneOf/anyOf descendants.
+    */
+  public static void registerDescendants(Class<?> modelClass, Map<String, Class<?>> descendants) {
+    modelDescendants.put(modelClass, descendants);
+  }
+
+  private static JSON json;
+
+  static {
+    json = new JSON();
+  }
+
+  /**
+    * Get the default JSON instance.
+    *
+    * @return the default JSON instance
+    */
+  public static JSON getDefault() {
+    return json;
+  }
+
+  /**
+    * Set the default JSON instance.
+    *
+    * @param json JSON instance to be used
+    */
+  public static void setDefault(JSON json) {
+    JSON.json = json;
+  }
+}
--- a/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/Pair.java
+++ b/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/Pair.java
@ -0,0 +1,57 @@
+/*
+ * Echo Server API
+ * Echo Server API
+ *
+ * The version of the OpenAPI document: 0.1.0
+ * Contact: team@openapitools.org
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client;
+
+@javax.annotation.processing.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
+public class Pair {
+    private String name = "";
+    private String value = "";
+
+    public Pair (String name, String value) {
+        setName(name);
+        setValue(value);
+    }
+
+    private void setName(String name) {
+        if (!isValidString(name)) {
+            return;
+        }
+
+        this.name = name;
+    }
+
+    private void setValue(String value) {
+        if (!isValidString(value)) {
+            return;
+        }
+
+        this.value = value;
+    }
+
+    public String getName() {
+        return this.name;
+    }
+
+    public String getValue() {
+        return this.value;
+    }
+
+    private boolean isValidString(String arg) {
+        if (arg == null) {
+            return false;
+        }
+
+        return true;
+    }
+}
--- a/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/RFC3339DateFormat.java
+++ b/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/RFC3339DateFormat.java
@ -0,0 +1,57 @@
+/*
+ * Echo Server API
+ * Echo Server API
+ *
+ * The version of the OpenAPI document: 0.1.0
+ * Contact: team@openapitools.org
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client;
+
+import com.fasterxml.jackson.databind.util.StdDateFormat;
+
+import java.text.DateFormat;
+import java.text.FieldPosition;
+import java.text.ParsePosition;
+import java.util.Date;
+import java.text.DecimalFormat;
+import java.util.GregorianCalendar;
+import java.util.TimeZone;
+
+public class RFC3339DateFormat extends DateFormat {
+  private static final long serialVersionUID = 1L;
+  private static final TimeZone TIMEZONE_Z = TimeZone.getTimeZone("UTC");
+
+  private final StdDateFormat fmt = new StdDateFormat()
+          .withTimeZone(TIMEZONE_Z)
+          .withColonInTimeZone(true);
+
+  public RFC3339DateFormat() {
+    this.calendar = new GregorianCalendar();
+    this.numberFormat = new DecimalFormat();
+  }
+
+  @Override
+  public Date parse(String source) {
+    return parse(source, new ParsePosition(0));
+  }
+
+  @Override
+  public Date parse(String source, ParsePosition pos) {
+    return fmt.parse(source, pos);
+  }
+
+  @Override
+  public StringBuffer format(Date date, StringBuffer toAppendTo, FieldPosition fieldPosition) {
+    return fmt.format(date, toAppendTo, fieldPosition);
+  }
+
+  @Override
+  public Object clone() {
+    return super.clone();
+  }
+}
--- a/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/ServerConfiguration.java
+++ b/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/ServerConfiguration.java
@ -0,0 +1,58 @@
+package org.openapitools.client;
+
+import java.util.Map;
+
+/**
+ * Representing a Server configuration.
+ */
+public class ServerConfiguration {
+    public String URL;
+    public String description;
+    public Map<String, ServerVariable> variables;
+
+    /**
+     * @param URL A URL to the target host.
+     * @param description A description of the host designated by the URL.
+     * @param variables A map between a variable name and its value. The value is used for substitution in the server's URL template.
+     */
+    public ServerConfiguration(String URL, String description, Map<String, ServerVariable> variables) {
+        this.URL = URL;
+        this.description = description;
+        this.variables = variables;
+    }
+
+    /**
+     * Format URL template using given variables.
+     *
+     * @param variables A map between a variable name and its value.
+     * @return Formatted URL.
+     */
+    public String URL(Map<String, String> variables) {
+        String url = this.URL;
+
+        // go through variables and replace placeholders
+        for (Map.Entry<String, ServerVariable> variable: this.variables.entrySet()) {
+            String name = variable.getKey();
+            ServerVariable serverVariable = variable.getValue();
+            String value = serverVariable.defaultValue;
+
+            if (variables != null && variables.containsKey(name)) {
+                value = variables.get(name);
+                if (serverVariable.enumValues.size() > 0 && !serverVariable.enumValues.contains(value)) {
+                    throw new IllegalArgumentException("The variable " + name + " in the server URL has invalid value " + value + ".");
+                }
+            }
+            url = url.replace("{" + name + "}", value);
+        }
+        return url;
+    }
+
+    /**
+     * Format URL template using default server variables.
+     *
+     * @return Formatted URL.
+     */
+    public String URL() {
+        return URL(null);
+    }
+}
--- a/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/ServerVariable.java
+++ b/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/ServerVariable.java
@ -0,0 +1,23 @@
+package org.openapitools.client;
+
+import java.util.HashSet;
+
+/**
+ * Representing a Server Variable for server URL template substitution.
+ */
+public class ServerVariable {
+    public String description;
+    public String defaultValue;
+    public HashSet<String> enumValues = null;
+
+    /**
+     * @param description A description for the server variable.
+     * @param defaultValue The default value to use for substitution.
+     * @param enumValues An enumeration of string values to be used if the substitution options are from a limited set.
+     */
+    public ServerVariable(String description, String defaultValue, HashSet<String> enumValues) {
+        this.description = description;
+        this.defaultValue = defaultValue;
+        this.enumValues = enumValues;
+    }
+}
--- a/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/api/QueryApi.java
+++ b/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/api/QueryApi.java
@ -0,0 +1,253 @@
+/*
+ * Echo Server API
+ * Echo Server API
+ *
+ * The version of the OpenAPI document: 0.1.0
+ * Contact: team@openapitools.org
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.api;
+
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.ApiResponse;
+import org.openapitools.client.Pair;
+
+import org.openapitools.client.model.Pet;
+import org.openapitools.client.model.TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter;
+
+import com.fasterxml.jackson.core.type.TypeReference;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URI;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.time.Duration;
+
+import java.util.ArrayList;
+import java.util.StringJoiner;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.function.Consumer;
+
+@javax.annotation.processing.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
+public class QueryApi {
+  private final HttpClient memberVarHttpClient;
+  private final ObjectMapper memberVarObjectMapper;
+  private final String memberVarBaseUri;
+  private final Consumer<HttpRequest.Builder> memberVarInterceptor;
+  private final Duration memberVarReadTimeout;
+  private final Consumer<HttpResponse<InputStream>> memberVarResponseInterceptor;
+  private final Consumer<HttpResponse<String>> memberVarAsyncResponseInterceptor;
+
+  public QueryApi() {
+    this(new ApiClient());
+  }
+
+  public QueryApi(ApiClient apiClient) {
+    memberVarHttpClient = apiClient.getHttpClient();
+    memberVarObjectMapper = apiClient.getObjectMapper();
+    memberVarBaseUri = apiClient.getBaseUri();
+    memberVarInterceptor = apiClient.getRequestInterceptor();
+    memberVarReadTimeout = apiClient.getReadTimeout();
+    memberVarResponseInterceptor = apiClient.getResponseInterceptor();
+    memberVarAsyncResponseInterceptor = apiClient.getAsyncResponseInterceptor();
+  }
+
+  protected ApiException getApiException(String operationId, HttpResponse<InputStream> response) throws IOException {
+    String body = response.body() == null ? null : new String(response.body().readAllBytes());
+    String message = formatExceptionMessage(operationId, response.statusCode(), body);
+    return new ApiException(response.statusCode(), message, response.headers(), body);
+  }
+
+  private String formatExceptionMessage(String operationId, int statusCode, String body) {
+    if (body == null || body.isEmpty()) {
+      body = "[no body]";
+    }
+    return operationId + " call failed with: " + statusCode + " - " + body;
+  }
+
+  /**
+   * Test query parameter(s)
+   * Test query parameter(s)
+   * @param queryObject  (optional)
+   * @return String
+   * @throws ApiException if fails to make API call
+   */
+  public String testQueryStyleFormExplodeTrueArrayString(TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter queryObject) throws ApiException {
+    ApiResponse<String> localVarResponse = testQueryStyleFormExplodeTrueArrayStringWithHttpInfo(queryObject);
+    return localVarResponse.getData();
+  }
+
+  /**
+   * Test query parameter(s)
+   * Test query parameter(s)
+   * @param queryObject  (optional)
+   * @return ApiResponse&lt;String&gt;
+   * @throws ApiException if fails to make API call
+   */
+  public ApiResponse<String> testQueryStyleFormExplodeTrueArrayStringWithHttpInfo(TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter queryObject) throws ApiException {
+    HttpRequest.Builder localVarRequestBuilder = testQueryStyleFormExplodeTrueArrayStringRequestBuilder(queryObject);
+    try {
+      HttpResponse<InputStream> localVarResponse = memberVarHttpClient.send(
+          localVarRequestBuilder.build(),
+          HttpResponse.BodyHandlers.ofInputStream());
+      if (memberVarResponseInterceptor != null) {
+        memberVarResponseInterceptor.accept(localVarResponse);
+      }
+      try {
+        if (localVarResponse.statusCode()/ 100 != 2) {
+          throw getApiException("testQueryStyleFormExplodeTrueArrayString", localVarResponse);
+        }
+        // for plain text response
+        InputStream responseBody = localVarResponse.body();
+        if (localVarResponse.headers().map().containsKey("Content-Type") &&
+                "text/plain".equalsIgnoreCase(localVarResponse.headers().map().get("Content-Type").get(0))) {
+          java.util.Scanner s = new java.util.Scanner(responseBody).useDelimiter("\\A");
+          String responseBodyText = s.hasNext() ? s.next() : "";
+          return new ApiResponse<String>(
+                  localVarResponse.statusCode(),
+                  localVarResponse.headers().map(),
+                  responseBodyText
+          );
+        } else {
+            throw new RuntimeException("Error! The response Content-Type is supposed to be `text/plain` but it's not: " + localVarResponse);
+        }
+      } finally {
+      }
+    } catch (IOException e) {
+      throw new ApiException(e);
+    }
+    catch (InterruptedException e) {
+      Thread.currentThread().interrupt();
+      throw new ApiException(e);
+    }
+  }
+
+  private HttpRequest.Builder testQueryStyleFormExplodeTrueArrayStringRequestBuilder(TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter queryObject) throws ApiException {
+
+    HttpRequest.Builder localVarRequestBuilder = HttpRequest.newBuilder();
+
+    String localVarPath = "/query/style_form/explode_true/array_string";
+
+    List<Pair> localVarQueryParams = new ArrayList<>();
+    localVarQueryParams.addAll(ApiClient.parameterToPairs("multi", "values", queryObject.getValues()));
+
+    if (!localVarQueryParams.isEmpty()) {
+      StringJoiner queryJoiner = new StringJoiner("&");
+      localVarQueryParams.forEach(p -> queryJoiner.add(p.getName() + '=' + p.getValue()));
+      localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath + '?' + queryJoiner.toString()));
+    } else {
+      localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath));
+    }
+
+    localVarRequestBuilder.header("Accept", "text/plain");
+
+    localVarRequestBuilder.method("GET", HttpRequest.BodyPublishers.noBody());
+    if (memberVarReadTimeout != null) {
+      localVarRequestBuilder.timeout(memberVarReadTimeout);
+    }
+    if (memberVarInterceptor != null) {
+      memberVarInterceptor.accept(localVarRequestBuilder);
+    }
+    return localVarRequestBuilder;
+  }
+  /**
+   * Test query parameter(s)
+   * Test query parameter(s)
+   * @param queryObject  (optional)
+   * @return String
+   * @throws ApiException if fails to make API call
+   */
+  public String testQueryStyleFormExplodeTrueObject(Pet queryObject) throws ApiException {
+    ApiResponse<String> localVarResponse = testQueryStyleFormExplodeTrueObjectWithHttpInfo(queryObject);
+    return localVarResponse.getData();
+  }
+
+  /**
+   * Test query parameter(s)
+   * Test query parameter(s)
+   * @param queryObject  (optional)
+   * @return ApiResponse&lt;String&gt;
+   * @throws ApiException if fails to make API call
+   */
+  public ApiResponse<String> testQueryStyleFormExplodeTrueObjectWithHttpInfo(Pet queryObject) throws ApiException {
+    HttpRequest.Builder localVarRequestBuilder = testQueryStyleFormExplodeTrueObjectRequestBuilder(queryObject);
+    try {
+      HttpResponse<InputStream> localVarResponse = memberVarHttpClient.send(
+          localVarRequestBuilder.build(),
+          HttpResponse.BodyHandlers.ofInputStream());
+      if (memberVarResponseInterceptor != null) {
+        memberVarResponseInterceptor.accept(localVarResponse);
+      }
+      try {
+        if (localVarResponse.statusCode()/ 100 != 2) {
+          throw getApiException("testQueryStyleFormExplodeTrueObject", localVarResponse);
+        }
+        // for plain text response
+        InputStream responseBody = localVarResponse.body();
+        if (localVarResponse.headers().map().containsKey("Content-Type") &&
+                "text/plain".equalsIgnoreCase(localVarResponse.headers().map().get("Content-Type").get(0))) {
+          java.util.Scanner s = new java.util.Scanner(responseBody).useDelimiter("\\A");
+          String responseBodyText = s.hasNext() ? s.next() : "";
+          return new ApiResponse<String>(
+                  localVarResponse.statusCode(),
+                  localVarResponse.headers().map(),
+                  responseBodyText
+          );
+        } else {
+            throw new RuntimeException("Error! The response Content-Type is supposed to be `text/plain` but it's not: " + localVarResponse);
+        }
+      } finally {
+      }
+    } catch (IOException e) {
+      throw new ApiException(e);
+    }
+    catch (InterruptedException e) {
+      Thread.currentThread().interrupt();
+      throw new ApiException(e);
+    }
+  }
+
+  private HttpRequest.Builder testQueryStyleFormExplodeTrueObjectRequestBuilder(Pet queryObject) throws ApiException {
+
+    HttpRequest.Builder localVarRequestBuilder = HttpRequest.newBuilder();
+
+    String localVarPath = "/query/style_form/explode_true/object";
+
+    List<Pair> localVarQueryParams = new ArrayList<>();
+    localVarQueryParams.addAll(ApiClient.parameterToPairs("id", queryObject.getId()));
+    localVarQueryParams.addAll(ApiClient.parameterToPairs("name", queryObject.getName()));
+    localVarQueryParams.addAll(ApiClient.parameterToPairs("category", queryObject.getCategory()));
+    localVarQueryParams.addAll(ApiClient.parameterToPairs("multi", "photoUrls", queryObject.getPhotoUrls()));
+    localVarQueryParams.addAll(ApiClient.parameterToPairs("multi", "tags", queryObject.getTags()));
+    localVarQueryParams.addAll(ApiClient.parameterToPairs("status", queryObject.getStatus()));
+
+    if (!localVarQueryParams.isEmpty()) {
+      StringJoiner queryJoiner = new StringJoiner("&");
+      localVarQueryParams.forEach(p -> queryJoiner.add(p.getName() + '=' + p.getValue()));
+      localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath + '?' + queryJoiner.toString()));
+    } else {
+      localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath));
+    }
+
+    localVarRequestBuilder.header("Accept", "text/plain");
+
+    localVarRequestBuilder.method("GET", HttpRequest.BodyPublishers.noBody());
+    if (memberVarReadTimeout != null) {
+      localVarRequestBuilder.timeout(memberVarReadTimeout);
+    }
+    if (memberVarInterceptor != null) {
+      memberVarInterceptor.accept(localVarRequestBuilder);
+    }
+    return localVarRequestBuilder;
+  }
+}
--- a/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/model/AbstractOpenApiSchema.java
+++ b/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/model/AbstractOpenApiSchema.java
@ -0,0 +1,147 @@
+/*
+ * Echo Server API
+ * Echo Server API
+ *
+ * The version of the OpenAPI document: 0.1.0
+ * Contact: team@openapitools.org
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.lang.reflect.Type;
+import java.util.Map;
+
+import com.fasterxml.jackson.annotation.JsonValue;
+
+/**
+ * Abstract class for oneOf,anyOf schemas defined in OpenAPI spec
+ */
+@javax.annotation.processing.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
+public abstract class AbstractOpenApiSchema {
+
+    // store the actual instance of the schema/object
+    private Object instance;
+
+    // is nullable
+    private Boolean isNullable;
+
+    // schema type (e.g. oneOf, anyOf)
+    private final String schemaType;
+
+    public AbstractOpenApiSchema(String schemaType, Boolean isNullable) {
+        this.schemaType = schemaType;
+        this.isNullable = isNullable;
+    }
+
+    /**
+     * Get the list of oneOf/anyOf composed schemas allowed to be stored in this object
+     *
+     * @return an instance of the actual schema/object
+     */
+    public abstract Map<String, Class<?>> getSchemas();
+
+    /**
+     * Get the actual instance
+     *
+     * @return an instance of the actual schema/object
+     */
+    @JsonValue
+    public Object getActualInstance() {return instance;}
+
+    /**
+     * Set the actual instance
+     *
+     * @param instance the actual instance of the schema/object
+     */
+    public void setActualInstance(Object instance) {this.instance = instance;}
+
+    /**
+     * Get the instant recursively when the schemas defined in oneOf/anyof happen to be oneOf/anyOf schema as well
+     *
+     * @return an instance of the actual schema/object
+     */
+    public Object getActualInstanceRecursively() {
+        return getActualInstanceRecursively(this);
+    }
+
+    private Object getActualInstanceRecursively(AbstractOpenApiSchema object) {
+        if (object.getActualInstance() == null) {
+            return null;
+        } else if (object.getActualInstance() instanceof AbstractOpenApiSchema) {
+            return getActualInstanceRecursively((AbstractOpenApiSchema)object.getActualInstance());
+        } else {
+            return object.getActualInstance();
+        }
+    }
+
+    /**
+     * Get the schema type (e.g. anyOf, oneOf)
+     *
+     * @return the schema type
+     */
+    public String getSchemaType() {
+        return schemaType;
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class ").append(getClass()).append(" {\n");
+        sb.append("    instance: ").append(toIndentedString(instance)).append("\n");
+        sb.append("    isNullable: ").append(toIndentedString(isNullable)).append("\n");
+        sb.append("    schemaType: ").append(toIndentedString(schemaType)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
+    }
+
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        AbstractOpenApiSchema a = (AbstractOpenApiSchema) o;
+        return Objects.equals(this.instance, a.instance) &&
+            Objects.equals(this.isNullable, a.isNullable) &&
+            Objects.equals(this.schemaType, a.schemaType);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(instance, isNullable, schemaType);
+    }
+
+    /**
+     * Is nullable
+     *
+     * @return true if it's nullable
+     */
+    public Boolean isNullable() {
+        if (Boolean.TRUE.equals(isNullable)) {
+            return Boolean.TRUE;
+        } else {
+            return Boolean.FALSE;
+        }
+    }
+
+
+
+}
--- a/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/model/Category.java
+++ b/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/model/Category.java
@ -0,0 +1,139 @@
+/*
+ * Echo Server API
+ * Echo Server API
+ *
+ * The version of the OpenAPI document: 0.1.0
+ * Contact: team@openapitools.org
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.util.Map;
+import java.util.HashMap;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+
+
+/**
+ * Category
+ */
+@JsonPropertyOrder({
+  Category.JSON_PROPERTY_ID,
+  Category.JSON_PROPERTY_NAME
+})
+@javax.annotation.processing.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
+public class Category {
+  public static final String JSON_PROPERTY_ID = "id";
+  private Long id;
+
+  public static final String JSON_PROPERTY_NAME = "name";
+  private String name;
+
+  public Category() { 
+  }
+
+  public Category id(Long id) {
+    this.id = id;
+    return this;
+  }
+
+   /**
+   * Get id
+   * @return id
+  **/
+  @javax.annotation.Nullable
+  @JsonProperty(JSON_PROPERTY_ID)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+
+  public Long getId() {
+    return id;
+  }
+
+
+  @JsonProperty(JSON_PROPERTY_ID)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setId(Long id) {
+    this.id = id;
+  }
+
+
+  public Category name(String name) {
+    this.name = name;
+    return this;
+  }
+
+   /**
+   * Get name
+   * @return name
+  **/
+  @javax.annotation.Nullable
+  @JsonProperty(JSON_PROPERTY_NAME)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+
+  public String getName() {
+    return name;
+  }
+
+
+  @JsonProperty(JSON_PROPERTY_NAME)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setName(String name) {
+    this.name = name;
+  }
+
+
+  /**
+   * Return true if this Category object is equal to o.
+   */
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Category category = (Category) o;
+    return Objects.equals(this.id, category.id) &&
+        Objects.equals(this.name, category.name);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(id, name);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Category {\n");
+    sb.append("    id: ").append(toIndentedString(id)).append("\n");
+    sb.append("    name: ").append(toIndentedString(name)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+
--- a/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/model/Pet.java
+++ b/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/model/Pet.java
@ -0,0 +1,317 @@
+/*
+ * Echo Server API
+ * Echo Server API
+ *
+ * The version of the OpenAPI document: 0.1.0
+ * Contact: team@openapitools.org
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.util.Map;
+import java.util.HashMap;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.util.ArrayList;
+import java.util.List;
+import org.openapitools.client.model.Category;
+import org.openapitools.client.model.Tag;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+
+
+/**
+ * Pet
+ */
+@JsonPropertyOrder({
+  Pet.JSON_PROPERTY_ID,
+  Pet.JSON_PROPERTY_NAME,
+  Pet.JSON_PROPERTY_CATEGORY,
+  Pet.JSON_PROPERTY_PHOTO_URLS,
+  Pet.JSON_PROPERTY_TAGS,
+  Pet.JSON_PROPERTY_STATUS
+})
+@javax.annotation.processing.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
+public class Pet {
+  public static final String JSON_PROPERTY_ID = "id";
+  private Long id;
+
+  public static final String JSON_PROPERTY_NAME = "name";
+  private String name;
+
+  public static final String JSON_PROPERTY_CATEGORY = "category";
+  private Category category;
+
+  public static final String JSON_PROPERTY_PHOTO_URLS = "photoUrls";
+  private List<String> photoUrls = new ArrayList<>();
+
+  public static final String JSON_PROPERTY_TAGS = "tags";
+  private List<Tag> tags = null;
+
+  /**
+   * pet status in the store
+   */
+  public enum StatusEnum {
+    AVAILABLE("available"),
+    
+    PENDING("pending"),
+    
+    SOLD("sold");
+
+    private String value;
+
+    StatusEnum(String value) {
+      this.value = value;
+    }
+
+    @JsonValue
+    public String getValue() {
+      return value;
+    }
+
+    @Override
+    public String toString() {
+      return String.valueOf(value);
+    }
+
+    @JsonCreator
+    public static StatusEnum fromValue(String value) {
+      for (StatusEnum b : StatusEnum.values()) {
+        if (b.value.equals(value)) {
+          return b;
+        }
+      }
+      throw new IllegalArgumentException("Unexpected value '" + value + "'");
+    }
+  }
+
+  public static final String JSON_PROPERTY_STATUS = "status";
+  private StatusEnum status;
+
+  public Pet() { 
+  }
+
+  public Pet id(Long id) {
+    this.id = id;
+    return this;
+  }
+
+   /**
+   * Get id
+   * @return id
+  **/
+  @javax.annotation.Nullable
+  @JsonProperty(JSON_PROPERTY_ID)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+
+  public Long getId() {
+    return id;
+  }
+
+
+  @JsonProperty(JSON_PROPERTY_ID)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setId(Long id) {
+    this.id = id;
+  }
+
+
+  public Pet name(String name) {
+    this.name = name;
+    return this;
+  }
+
+   /**
+   * Get name
+   * @return name
+  **/
+  @javax.annotation.Nonnull
+  @JsonProperty(JSON_PROPERTY_NAME)
+  @JsonInclude(value = JsonInclude.Include.ALWAYS)
+
+  public String getName() {
+    return name;
+  }
+
+
+  @JsonProperty(JSON_PROPERTY_NAME)
+  @JsonInclude(value = JsonInclude.Include.ALWAYS)
+  public void setName(String name) {
+    this.name = name;
+  }
+
+
+  public Pet category(Category category) {
+    this.category = category;
+    return this;
+  }
+
+   /**
+   * Get category
+   * @return category
+  **/
+  @javax.annotation.Nullable
+  @JsonProperty(JSON_PROPERTY_CATEGORY)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+
+  public Category getCategory() {
+    return category;
+  }
+
+
+  @JsonProperty(JSON_PROPERTY_CATEGORY)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setCategory(Category category) {
+    this.category = category;
+  }
+
+
+  public Pet photoUrls(List<String> photoUrls) {
+    this.photoUrls = photoUrls;
+    return this;
+  }
+
+  public Pet addPhotoUrlsItem(String photoUrlsItem) {
+    this.photoUrls.add(photoUrlsItem);
+    return this;
+  }
+
+   /**
+   * Get photoUrls
+   * @return photoUrls
+  **/
+  @javax.annotation.Nonnull
+  @JsonProperty(JSON_PROPERTY_PHOTO_URLS)
+  @JsonInclude(value = JsonInclude.Include.ALWAYS)
+
+  public List<String> getPhotoUrls() {
+    return photoUrls;
+  }
+
+
+  @JsonProperty(JSON_PROPERTY_PHOTO_URLS)
+  @JsonInclude(value = JsonInclude.Include.ALWAYS)
+  public void setPhotoUrls(List<String> photoUrls) {
+    this.photoUrls = photoUrls;
+  }
+
+
+  public Pet tags(List<Tag> tags) {
+    this.tags = tags;
+    return this;
+  }
+
+  public Pet addTagsItem(Tag tagsItem) {
+    if (this.tags == null) {
+      this.tags = new ArrayList<>();
+    }
+    this.tags.add(tagsItem);
+    return this;
+  }
+
+   /**
+   * Get tags
+   * @return tags
+  **/
+  @javax.annotation.Nullable
+  @JsonProperty(JSON_PROPERTY_TAGS)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+
+  public List<Tag> getTags() {
+    return tags;
+  }
+
+
+  @JsonProperty(JSON_PROPERTY_TAGS)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setTags(List<Tag> tags) {
+    this.tags = tags;
+  }
+
+
+  public Pet status(StatusEnum status) {
+    this.status = status;
+    return this;
+  }
+
+   /**
+   * pet status in the store
+   * @return status
+  **/
+  @javax.annotation.Nullable
+  @JsonProperty(JSON_PROPERTY_STATUS)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+
+  public StatusEnum getStatus() {
+    return status;
+  }
+
+
+  @JsonProperty(JSON_PROPERTY_STATUS)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setStatus(StatusEnum status) {
+    this.status = status;
+  }
+
+
+  /**
+   * Return true if this Pet object is equal to o.
+   */
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Pet pet = (Pet) o;
+    return Objects.equals(this.id, pet.id) &&
+        Objects.equals(this.name, pet.name) &&
+        Objects.equals(this.category, pet.category) &&
+        Objects.equals(this.photoUrls, pet.photoUrls) &&
+        Objects.equals(this.tags, pet.tags) &&
+        Objects.equals(this.status, pet.status);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(id, name, category, photoUrls, tags, status);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Pet {\n");
+    sb.append("    id: ").append(toIndentedString(id)).append("\n");
+    sb.append("    name: ").append(toIndentedString(name)).append("\n");
+    sb.append("    category: ").append(toIndentedString(category)).append("\n");
+    sb.append("    photoUrls: ").append(toIndentedString(photoUrls)).append("\n");
+    sb.append("    tags: ").append(toIndentedString(tags)).append("\n");
+    sb.append("    status: ").append(toIndentedString(status)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+
--- a/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/model/Tag.java
+++ b/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/model/Tag.java
@ -0,0 +1,139 @@
+/*
+ * Echo Server API
+ * Echo Server API
+ *
+ * The version of the OpenAPI document: 0.1.0
+ * Contact: team@openapitools.org
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.util.Map;
+import java.util.HashMap;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+
+
+/**
+ * Tag
+ */
+@JsonPropertyOrder({
+  Tag.JSON_PROPERTY_ID,
+  Tag.JSON_PROPERTY_NAME
+})
+@javax.annotation.processing.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
+public class Tag {
+  public static final String JSON_PROPERTY_ID = "id";
+  private Long id;
+
+  public static final String JSON_PROPERTY_NAME = "name";
+  private String name;
+
+  public Tag() { 
+  }
+
+  public Tag id(Long id) {
+    this.id = id;
+    return this;
+  }
+
+   /**
+   * Get id
+   * @return id
+  **/
+  @javax.annotation.Nullable
+  @JsonProperty(JSON_PROPERTY_ID)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+
+  public Long getId() {
+    return id;
+  }
+
+
+  @JsonProperty(JSON_PROPERTY_ID)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setId(Long id) {
+    this.id = id;
+  }
+
+
+  public Tag name(String name) {
+    this.name = name;
+    return this;
+  }
+
+   /**
+   * Get name
+   * @return name
+  **/
+  @javax.annotation.Nullable
+  @JsonProperty(JSON_PROPERTY_NAME)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+
+  public String getName() {
+    return name;
+  }
+
+
+  @JsonProperty(JSON_PROPERTY_NAME)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setName(String name) {
+    this.name = name;
+  }
+
+
+  /**
+   * Return true if this Tag object is equal to o.
+   */
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Tag tag = (Tag) o;
+    return Objects.equals(this.id, tag.id) &&
+        Objects.equals(this.name, tag.name);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(id, name);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Tag {\n");
+    sb.append("    id: ").append(toIndentedString(id)).append("\n");
+    sb.append("    name: ").append(toIndentedString(name)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+
--- a/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/model/TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter.java
+++ b/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/model/TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter.java
@ -0,0 +1,118 @@
+/*
+ * Echo Server API
+ * Echo Server API
+ *
+ * The version of the OpenAPI document: 0.1.0
+ * Contact: team@openapitools.org
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.util.Map;
+import java.util.HashMap;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.util.ArrayList;
+import java.util.List;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+
+
+/**
+ * TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter
+ */
+@JsonPropertyOrder({
+  TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter.JSON_PROPERTY_VALUES
+})
+@javax.annotation.processing.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
+public class TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter {
+  public static final String JSON_PROPERTY_VALUES = "values";
+  private List<String> values = null;
+
+  public TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter() { 
+  }
+
+  public TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter values(List<String> values) {
+    this.values = values;
+    return this;
+  }
+
+  public TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter addValuesItem(String valuesItem) {
+    if (this.values == null) {
+      this.values = new ArrayList<>();
+    }
+    this.values.add(valuesItem);
+    return this;
+  }
+
+   /**
+   * Get values
+   * @return values
+  **/
+  @javax.annotation.Nullable
+  @JsonProperty(JSON_PROPERTY_VALUES)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+
+  public List<String> getValues() {
+    return values;
+  }
+
+
+  @JsonProperty(JSON_PROPERTY_VALUES)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setValues(List<String> values) {
+    this.values = values;
+  }
+
+
+  /**
+   * Return true if this test_query_style_form_explode_true_array_string_query_object_parameter object is equal to o.
+   */
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter testQueryStyleFormExplodeTrueArrayStringQueryObjectParameter = (TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter) o;
+    return Objects.equals(this.values, testQueryStyleFormExplodeTrueArrayStringQueryObjectParameter.values);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(values);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter {\n");
+    sb.append("    values: ").append(toIndentedString(values)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+
--- a/samples/client/echo_api/java/native/src/test/java/org/openapitools/client/CustomTest.java
+++ b/samples/client/echo_api/java/native/src/test/java/org/openapitools/client/CustomTest.java
@ -0,0 +1,70 @@
+/*
+ * Echo Server API
+ * Echo Server API
+ *
+ * The version of the OpenAPI document: 0.1.0
+ * Contact: team@openapitools.oprg
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client;
+
+import org.junit.Assert;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.api.QueryApi;
+import org.openapitools.client.model.Category;
+import org.openapitools.client.model.Pet;
+import org.openapitools.client.model.TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter;
+import org.junit.Test;
+import org.junit.Ignore;
+
+import java.util.*;
+
+
+/**
+ * API tests for QueryApi
+ */
+public class CustomTest {
+
+    private final QueryApi api = new QueryApi();
+
+
+    /**
+     * Test query parameter(s)
+     * <p>
+     * Test query parameter(s)
+     *
+     * @throws ApiException if the Api call fails
+     */
+    @Test
+    public void testQueryStyleFormExplodeTrueObjectTest() throws ApiException {
+        Pet queryObject = new Pet().id(12345L).name("Hello World").
+                photoUrls(Arrays.asList(new String[]{"http://a.com", "http://b.com"})).category(new Category().id(987L).name("new category"));
+
+        String response = api.testQueryStyleFormExplodeTrueObject(queryObject);
+        org.openapitools.client.EchoServerResponseParser p = new org.openapitools.client.EchoServerResponseParser(response);
+        Assert.assertEquals("/query/style_form/explode_true/object?id=12345&name=Hello%20World&category=class%20Category%20%7B%0A%20%20%20%20id%3A%20987%0A%20%20%20%20name%3A%20new%20category%0A%7D&photoUrls=http%3A%2F%2Fa.com&photoUrls=http%3A%2F%2Fb.com", p.path);
+    }
+
+    /**
+     * Test query parameter(s)
+     * <p>
+     * Test query parameter(s)
+     *
+     * @throws ApiException if the Api call fails
+     */
+    @Test
+    public void testQueryStyleFormExplodeTrueArrayString() throws ApiException {
+        TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter q = new TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter()
+                .values(Arrays.asList(new String[]{"hello world 1", "hello world 2"}));
+
+        String response = api.testQueryStyleFormExplodeTrueArrayString(q);
+        org.openapitools.client.EchoServerResponseParser p = new org.openapitools.client.EchoServerResponseParser(response);
+        Assert.assertEquals("/query/style_form/explode_true/array_string?values=hello%20world%201&values=hello%20world%202", p.path);
+    }
+
+}
--- a/samples/client/echo_api/java/native/src/test/java/org/openapitools/client/EchoServerResponseParser.java
+++ b/samples/client/echo_api/java/native/src/test/java/org/openapitools/client/EchoServerResponseParser.java
@ -0,0 +1,51 @@
+/*
+ * Copyright 2018 OpenAPI-Generator Contributors (https://openapi-generator.tech)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.openapitools.client;
+
+public class EchoServerResponseParser {
+    public String method; // e.g. GET
+    public String path; // e.g. /query/style_form/explode_true/object?id=12345
+    public String protocol; // e.g. HTTP/1.1
+    public java.util.HashMap<String, String> headers = new java.util.HashMap<>();
+
+    public EchoServerResponseParser(String response) {
+        if (response == null) {
+            throw new RuntimeException("Echo server response cannot be null");
+        }
+
+        String[] lines = response.split("\n");
+        boolean firstLine = true;
+
+        for (String line : lines) {
+            if (firstLine) {
+                String[] items = line.split(" ");
+                this.method = items[0];
+                this.path = items[1];
+                this.protocol = items[2];
+                firstLine = false;
+                continue;
+            }
+
+            // store the header key-value pair in headers
+            String[] keyValue = line.split(": ");
+            if (keyValue.length == 2) { // skip blank line, non key-value pair
+                this.headers.put(keyValue[0], keyValue[1]);
+            }
+        }
+
+    }
+}
--- a/samples/client/echo_api/java/native/src/test/java/org/openapitools/client/api/QueryApiTest.java
+++ b/samples/client/echo_api/java/native/src/test/java/org/openapitools/client/api/QueryApiTest.java
@ -0,0 +1,54 @@
+/*
+ * Echo Server API
+ * Echo Server API
+ *
+ * The version of the OpenAPI document: 0.1.0
+ * Contact: team@openapitools.oprg
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.api;
+
+import org.openapitools.client.ApiException;
+import org.openapitools.client.model.Pet;
+import org.junit.Test;
+import org.junit.Ignore;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+
+/**
+ * API tests for QueryApi
+ */
+@Ignore
+public class QueryApiTest {
+
+    private final QueryApi api = new QueryApi();
+
+    
+    /**
+     * Test query parameter(s)
+     *
+     * Test query parameter(s)
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testQueryStyleFormExplodeTrueObjectTest() throws ApiException {
+        Pet queryObject = null;
+        String response = 
+        api.testQueryStyleFormExplodeTrueObject(queryObject);
+        
+        // TODO: test validations
+    }
+    
+}
--- a/samples/client/echo_api/java/native/src/test/java/org/openapitools/client/model/CategoryTest.java
+++ b/samples/client/echo_api/java/native/src/test/java/org/openapitools/client/model/CategoryTest.java
@ -0,0 +1,56 @@
+/*
+ * Echo Server API
+ * Echo Server API
+ *
+ * The version of the OpenAPI document: 0.1.0
+ * Contact: team@openapitools.oprg
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.junit.Assert;
+import org.junit.Ignore;
+import org.junit.Test;
+
+
+/**
+ * Model tests for Category
+ */
+public class CategoryTest {
+    private final Category model = new Category();
+
+    /**
+     * Model tests for Category
+     */
+    @Test
+    public void testCategory() {
+        // TODO: test Category
+    }
+
+    /**
+     * Test the property 'id'
+     */
+    @Test
+    public void idTest() {
+        // TODO: test id
+    }
+
+    /**
+     * Test the property 'name'
+     */
+    @Test
+    public void nameTest() {
+        // TODO: test name
+    }
+
+}
--- a/samples/client/echo_api/java/native/src/test/java/org/openapitools/client/model/PetTest.java
+++ b/samples/client/echo_api/java/native/src/test/java/org/openapitools/client/model/PetTest.java
@ -0,0 +1,92 @@
+/*
+ * Echo Server API
+ * Echo Server API
+ *
+ * The version of the OpenAPI document: 0.1.0
+ * Contact: team@openapitools.oprg
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.util.ArrayList;
+import java.util.List;
+import org.openapitools.client.model.Category;
+import org.openapitools.client.model.Tag;
+import org.junit.Assert;
+import org.junit.Ignore;
+import org.junit.Test;
+
+
+/**
+ * Model tests for Pet
+ */
+public class PetTest {
+    private final Pet model = new Pet();
+
+    /**
+     * Model tests for Pet
+     */
+    @Test
+    public void testPet() {
+        // TODO: test Pet
+    }
+
+    /**
+     * Test the property 'id'
+     */
+    @Test
+    public void idTest() {
+        // TODO: test id
+    }
+
+    /**
+     * Test the property 'name'
+     */
+    @Test
+    public void nameTest() {
+        // TODO: test name
+    }
+
+    /**
+     * Test the property 'category'
+     */
+    @Test
+    public void categoryTest() {
+        // TODO: test category
+    }
+
+    /**
+     * Test the property 'photoUrls'
+     */
+    @Test
+    public void photoUrlsTest() {
+        // TODO: test photoUrls
+    }
+
+    /**
+     * Test the property 'tags'
+     */
+    @Test
+    public void tagsTest() {
+        // TODO: test tags
+    }
+
+    /**
+     * Test the property 'status'
+     */
+    @Test
+    public void statusTest() {
+        // TODO: test status
+    }
+
+}
--- a/samples/client/echo_api/java/native/src/test/java/org/openapitools/client/model/TagTest.java
+++ b/samples/client/echo_api/java/native/src/test/java/org/openapitools/client/model/TagTest.java
@ -0,0 +1,56 @@
+/*
+ * Echo Server API
+ * Echo Server API
+ *
+ * The version of the OpenAPI document: 0.1.0
+ * Contact: team@openapitools.oprg
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.junit.Assert;
+import org.junit.Ignore;
+import org.junit.Test;
+
+
+/**
+ * Model tests for Tag
+ */
+public class TagTest {
+    private final Tag model = new Tag();
+
+    /**
+     * Model tests for Tag
+     */
+    @Test
+    public void testTag() {
+        // TODO: test Tag
+    }
+
+    /**
+     * Test the property 'id'
+     */
+    @Test
+    public void idTest() {
+        // TODO: test id
+    }
+
+    /**
+     * Test the property 'name'
+     */
+    @Test
+    public void nameTest() {
+        // TODO: test name
+    }
+
+}
--- a/samples/client/echo_api/java/native/src/test/java/org/openapitools/client/model/TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameterTest.java
+++ b/samples/client/echo_api/java/native/src/test/java/org/openapitools/client/model/TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameterTest.java
@ -0,0 +1,50 @@
+/*
+ * Echo Server API
+ * Echo Server API
+ *
+ * The version of the OpenAPI document: 0.1.0
+ * Contact: team@openapitools.oprg
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.util.ArrayList;
+import java.util.List;
+import org.junit.Assert;
+import org.junit.Ignore;
+import org.junit.Test;
+
+
+/**
+ * Model tests for TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter
+ */
+public class TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameterTest {
+    private final TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter model = new TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter();
+
+    /**
+     * Model tests for TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter
+     */
+    @Test
+    public void testTestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter() {
+        // TODO: test TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter
+    }
+
+    /**
+     * Test the property 'values'
+     */
+    @Test
+    public void valuesTest() {
+        // TODO: test values
+    }
+
+}
--- a/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/AnotherFakeApi.java
+++ b/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/AnotherFakeApi.java
@ -111,7 +111,6 @@ public class AnotherFakeApi {
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
          responseBody == null || responseBody.available() < 1 ? null : memberVarObjectMapper.readValue(responseBody, new TypeReference<Client>() {}) // closes the InputStream
-          
        );
      } finally {
      }
--- a/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/DefaultApi.java
+++ b/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/DefaultApi.java
@ -109,7 +109,6 @@ public class DefaultApi {
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
          responseBody == null || responseBody.available() < 1 ? null : memberVarObjectMapper.readValue(responseBody, new TypeReference<FooGetDefaultResponse>() {}) // closes the InputStream
-          
        );
      } finally {
      }
--- a/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/FakeApi.java
+++ b/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/FakeApi.java
@ -120,7 +120,6 @@ public class FakeApi {
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
          responseBody == null || responseBody.available() < 1 ? null : memberVarObjectMapper.readValue(responseBody, new TypeReference<HealthCheckResult>() {}) // closes the InputStream
-          
        );
      } finally {
      }
@ -189,7 +188,6 @@ public class FakeApi {
        return new ApiResponse<Void>(
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
-          
          null
        );
      } finally {
@ -286,7 +284,6 @@ public class FakeApi {
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
          responseBody == null || responseBody.available() < 1 ? null : memberVarObjectMapper.readValue(responseBody, new TypeReference<Boolean>() {}) // closes the InputStream
-          
        );
      } finally {
      }
@ -361,7 +358,6 @@ public class FakeApi {
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
          responseBody == null || responseBody.available() < 1 ? null : memberVarObjectMapper.readValue(responseBody, new TypeReference<OuterComposite>() {}) // closes the InputStream
-          
        );
      } finally {
      }
@ -436,7 +432,6 @@ public class FakeApi {
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
          responseBody == null || responseBody.available() < 1 ? null : memberVarObjectMapper.readValue(responseBody, new TypeReference<BigDecimal>() {}) // closes the InputStream
-          
        );
      } finally {
      }
@ -511,7 +506,6 @@ public class FakeApi {
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
          responseBody == null || responseBody.available() < 1 ? null : memberVarObjectMapper.readValue(responseBody, new TypeReference<String>() {}) // closes the InputStream
-          
        );
      } finally {
      }
@ -581,7 +575,6 @@ public class FakeApi {
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
          responseBody == null || responseBody.available() < 1 ? null : memberVarObjectMapper.readValue(responseBody, new TypeReference<OuterObjectWithEnumProperty>() {}) // closes the InputStream
-          
        );
      } finally {
      }
@ -656,7 +649,6 @@ public class FakeApi {
        return new ApiResponse<Void>(
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
-          
          null
        );
      } finally {
@ -737,7 +729,6 @@ public class FakeApi {
        return new ApiResponse<Void>(
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
-          
          null
        );
      } finally {
@ -820,7 +811,6 @@ public class FakeApi {
        return new ApiResponse<Void>(
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
-          
          null
        );
      } finally {
@ -918,7 +908,6 @@ public class FakeApi {
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
          responseBody == null || responseBody.available() < 1 ? null : memberVarObjectMapper.readValue(responseBody, new TypeReference<Client>() {}) // closes the InputStream
-          
        );
      } finally {
      }
@ -1019,7 +1008,6 @@ public class FakeApi {
        return new ApiResponse<Void>(
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
-          
          null
        );
      } finally {
@ -1122,7 +1110,6 @@ public class FakeApi {
        return new ApiResponse<Void>(
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
-          
          null
        );
      } finally {
@ -1255,7 +1242,6 @@ public class FakeApi {
        return new ApiResponse<Void>(
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
-          
          null
        );
      } finally {
@ -1433,7 +1419,6 @@ public class FakeApi {
        return new ApiResponse<Void>(
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
-          
          null
        );
      } finally {
@ -1516,7 +1501,6 @@ public class FakeApi {
        return new ApiResponse<Void>(
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
-          
          null
        );
      } finally {
@ -1607,7 +1591,6 @@ public class FakeApi {
        return new ApiResponse<Void>(
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
-          
          null
        );
      } finally {
--- a/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
+++ b/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
@ -111,7 +111,6 @@ public class FakeClassnameTags123Api {
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
          responseBody == null || responseBody.available() < 1 ? null : memberVarObjectMapper.readValue(responseBody, new TypeReference<Client>() {}) // closes the InputStream
-          
        );
      } finally {
      }
--- a/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/PetApi.java
@ -110,7 +110,6 @@ public class PetApi {
        return new ApiResponse<Void>(
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
-          
          null
        );
      } finally {
@ -193,7 +192,6 @@ public class PetApi {
        return new ApiResponse<Void>(
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
-          
          null
        );
      } finally {
@ -276,7 +274,6 @@ public class PetApi {
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
          responseBody == null || responseBody.available() < 1 ? null : memberVarObjectMapper.readValue(responseBody, new TypeReference<List<Pet>>() {}) // closes the InputStream
-          
        );
      } finally {
      }
@ -362,7 +359,6 @@ public class PetApi {
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
          responseBody == null || responseBody.available() < 1 ? null : memberVarObjectMapper.readValue(responseBody, new TypeReference<Set<Pet>>() {}) // closes the InputStream
-          
        );
      } finally {
      }
@ -444,7 +440,6 @@ public class PetApi {
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
          responseBody == null || responseBody.available() < 1 ? null : memberVarObjectMapper.readValue(responseBody, new TypeReference<Pet>() {}) // closes the InputStream
-          
        );
      } finally {
      }
@ -514,7 +509,6 @@ public class PetApi {
        return new ApiResponse<Void>(
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
-          
          null
        );
      } finally {
@ -599,7 +593,6 @@ public class PetApi {
        return new ApiResponse<Void>(
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
-          
          null
        );
      } finally {
@ -683,7 +676,6 @@ public class PetApi {
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
          responseBody == null || responseBody.available() < 1 ? null : memberVarObjectMapper.readValue(responseBody, new TypeReference<ModelApiResponse>() {}) // closes the InputStream
-          
        );
      } finally {
      }
@ -761,7 +753,6 @@ public class PetApi {
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
          responseBody == null || responseBody.available() < 1 ? null : memberVarObjectMapper.readValue(responseBody, new TypeReference<ModelApiResponse>() {}) // closes the InputStream
-          
        );
      } finally {
      }
--- a/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/StoreApi.java
+++ b/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/StoreApi.java
@ -107,7 +107,6 @@ public class StoreApi {
        return new ApiResponse<Void>(
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
-          
          null
        );
      } finally {
@ -185,7 +184,6 @@ public class StoreApi {
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
          responseBody == null || responseBody.available() < 1 ? null : memberVarObjectMapper.readValue(responseBody, new TypeReference<Map<String, Integer>>() {}) // closes the InputStream
-          
        );
      } finally {
      }
@ -254,7 +252,6 @@ public class StoreApi {
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
          responseBody == null || responseBody.available() < 1 ? null : memberVarObjectMapper.readValue(responseBody, new TypeReference<Order>() {}) // closes the InputStream
-          
        );
      } finally {
      }
@ -328,7 +325,6 @@ public class StoreApi {
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
          responseBody == null || responseBody.available() < 1 ? null : memberVarObjectMapper.readValue(responseBody, new TypeReference<Order>() {}) // closes the InputStream
-          
        );
      } finally {
      }
--- a/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/UserApi.java
+++ b/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/UserApi.java
@ -108,7 +108,6 @@ public class UserApi {
        return new ApiResponse<Void>(
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
-          
          null
        );
      } finally {
@ -189,7 +188,6 @@ public class UserApi {
        return new ApiResponse<Void>(
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
-          
          null
        );
      } finally {
@ -270,7 +268,6 @@ public class UserApi {
        return new ApiResponse<Void>(
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
-          
          null
        );
      } finally {
@ -351,7 +348,6 @@ public class UserApi {
        return new ApiResponse<Void>(
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
-          
          null
        );
      } finally {
@ -431,7 +427,6 @@ public class UserApi {
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
          responseBody == null || responseBody.available() < 1 ? null : memberVarObjectMapper.readValue(responseBody, new TypeReference<User>() {}) // closes the InputStream
-          
        );
      } finally {
      }
@ -507,7 +502,6 @@ public class UserApi {
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
          responseBody == null || responseBody.available() < 1 ? null : memberVarObjectMapper.readValue(responseBody, new TypeReference<String>() {}) // closes the InputStream
-          
        );
      } finally {
      }
@ -588,7 +582,6 @@ public class UserApi {
        return new ApiResponse<Void>(
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
-          
          null
        );
      } finally {
@ -661,7 +654,6 @@ public class UserApi {
        return new ApiResponse<Void>(
          localVarResponse.statusCode(),
          localVarResponse.headers().map(),
-          
          null
        );
      } finally {