diff --git a/.github/workflows/samples-java-server-jdk8.yaml b/.github/workflows/samples-java-server-jdk8.yaml
index 73e4bcfb0b8..342a624b0c7 100644
--- a/.github/workflows/samples-java-server-jdk8.yaml
+++ b/.github/workflows/samples-java-server-jdk8.yaml
@@ -8,6 +8,7 @@ on:
       - 'samples/server/petstore/java-vertx-web/**'
       - 'samples/server/petstore/java-inflector/**'
       - 'samples/server/petstore/java-pkmst/**'
+      # test in circleci instead
       - 'samples/server/petstore/java-undertow/**'
   pull_request:
     paths:
@@ -15,7 +16,7 @@ on:
       - 'samples/server/petstore/java-vertx-web/**'
       - 'samples/server/petstore/java-inflector/**'
       - 'samples/server/petstore/java-pkmst/**'
-      - 'samples/server/petstore/java-undertow/**'
+      #- 'samples/server/petstore/java-undertow/**'
 jobs:
   build:
     name: Build Java Server
@@ -29,7 +30,7 @@ jobs:
           - samples/server/petstore/java-vertx-web/
           - samples/server/petstore/java-inflector/
           - samples/server/petstore/java-pkmst/
-          - samples/server/petstore/java-undertow/
+          #- samples/server/petstore/java-undertow/
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-java@v3
diff --git a/bin/configs/java-undertow-server-java-undertow.yaml b/bin/configs/java-undertow-server.yaml
similarity index 78%
rename from bin/configs/java-undertow-server-java-undertow.yaml
rename to bin/configs/java-undertow-server.yaml
index 2cbb1160f17..0abaa522f85 100644
--- a/bin/configs/java-undertow-server-java-undertow.yaml
+++ b/bin/configs/java-undertow-server.yaml
@@ -1,6 +1,6 @@
 generatorName: java-undertow-server
 outputDir: samples/server/petstore/java-undertow
-inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore.yaml
+inputSpec: modules/openapi-generator/src/test/resources/3_0/petstore.yaml
 templateDir: modules/openapi-generator/src/main/resources/java-undertow-server
 additionalProperties:
   hideGenerationTimestamp: "true"
diff --git a/modules/openapi-generator/src/main/resources/java-undertow-server/pom.mustache b/modules/openapi-generator/src/main/resources/java-undertow-server/pom.mustache
index 09880bfb29e..0c935a6ad27 100644
--- a/modules/openapi-generator/src/main/resources/java-undertow-server/pom.mustache
+++ b/modules/openapi-generator/src/main/resources/java-undertow-server/pom.mustache
@@ -29,7 +29,7 @@
         <version.logback>1.2.0</version.logback>
         <version.junit>4.13.2</version.junit>
         <version.mockito>2.1.0-beta.124</version.mockito>
-        <version.undertow>2.2.24.Final</version.undertow>
+        <version.undertow>2.3.5.Final</version.undertow>
         <version.jsonpath>2.2.0</version.jsonpath>
         <version.httpclient>4.5.13</version.httpclient>
         <version.httpasyncclient>4.1.2</version.httpasyncclient>
diff --git a/pom.xml b/pom.xml
index 18a60a47967..d69e6af2c80 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1290,6 +1290,8 @@
                 <module>samples/client/petstore/java/resteasy</module>
                 <module>samples/client/petstore/java-micronaut-client</module>
                 <module>samples/client/petstore/java/apache-httpclient</module>
+                <!-- server -->
+                <module>samples/server/petstore/java-undertow</module>
             </modules>
         </profile>
         <!-- test with Haskell -->
diff --git a/samples/server/petstore/java-undertow/dependency-reduced-pom.xml b/samples/server/petstore/java-undertow/dependency-reduced-pom.xml
index 5ed0060b336..43d9fc19edd 100644
--- a/samples/server/petstore/java-undertow/dependency-reduced-pom.xml
+++ b/samples/server/petstore/java-undertow/dependency-reduced-pom.xml
@@ -135,7 +135,7 @@
     <version.framework>0.1.1</version.framework>
     <version.jackson>2.14.1</version.jackson>
     <version.httpasyncclient>4.1.2</version.httpasyncclient>
-    <version.undertow>2.2.24.Final</version.undertow>
+    <version.undertow>2.3.5.Final</version.undertow>
     <version.slf4j>1.7.21</version.slf4j>
     <version.jackson.databind>2.14.1</version.jackson.databind>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
diff --git a/samples/server/petstore/java-undertow/pom.xml b/samples/server/petstore/java-undertow/pom.xml
index 4659968f144..d4503f49f40 100644
--- a/samples/server/petstore/java-undertow/pom.xml
+++ b/samples/server/petstore/java-undertow/pom.xml
@@ -29,7 +29,7 @@
         <version.logback>1.2.0</version.logback>
         <version.junit>4.13.2</version.junit>
         <version.mockito>2.1.0-beta.124</version.mockito>
-        <version.undertow>2.2.24.Final</version.undertow>
+        <version.undertow>2.3.5.Final</version.undertow>
         <version.jsonpath>2.2.0</version.jsonpath>
         <version.httpclient>4.5.13</version.httpclient>
         <version.httpasyncclient>4.1.2</version.httpasyncclient>
diff --git a/samples/server/petstore/java-undertow/src/main/java/org/openapitools/handler/PathHandlerInterface.java b/samples/server/petstore/java-undertow/src/main/java/org/openapitools/handler/PathHandlerInterface.java
index e55763683cd..24e6b8d80f4 100644
--- a/samples/server/petstore/java-undertow/src/main/java/org/openapitools/handler/PathHandlerInterface.java
+++ b/samples/server/petstore/java-undertow/src/main/java/org/openapitools/handler/PathHandlerInterface.java
@@ -21,6 +21,8 @@ public interface PathHandlerInterface {
     /**
      * <p>Add a new pet to the store</p>
      *
+     * <p></p>
+     *
      * <p><b>Endpoint</b>: {@link Methods#POST POST} "/v2/pet" (<i>privileged: true</i>)</p>
      *
      * <p><b>Request parameters</b>:</p>
@@ -30,9 +32,12 @@ public interface PathHandlerInterface {
      * <p><b>Consumes</b>: [{isJson=true, mediaType=application/json}, {isXml=true, mediaType=application/xml}]</p>
      * <p><b>Payload</b>: {@link Pet} (<i>required: true</i>)</p>
      *
+     * <p><b>Produces</b>: [{isXml=true, mediaType=application/xml}, {isJson=true, mediaType=application/json}]</p>
+     * <p><b>Returns</b>: {@link Pet}</p>
      *
      * <p><b>Responses</b>:</p>
      * <ul>
+     * <li><b>200 (success)</b>: successful operation</li>
      * <li><b>405 (client error)</b>: Invalid input</li>
      * </ul>
      */
@@ -42,6 +47,8 @@ public interface PathHandlerInterface {
     /**
      * <p>Deletes a pet</p>
      *
+     * <p></p>
+     *
      * <p><b>Endpoint</b>: {@link Methods#DELETE DELETE} "/v2/pet/{petId}" (<i>privileged: true</i>)</p>
      *
      * <p><b>Request parameters</b>:</p>
@@ -175,6 +182,8 @@ public interface PathHandlerInterface {
     /**
      * <p>Update an existing pet</p>
      *
+     * <p></p>
+     *
      * <p><b>Endpoint</b>: {@link Methods#PUT PUT} "/v2/pet" (<i>privileged: true</i>)</p>
      *
      * <p><b>Request parameters</b>:</p>
@@ -184,9 +193,12 @@ public interface PathHandlerInterface {
      * <p><b>Consumes</b>: [{isJson=true, mediaType=application/json}, {isXml=true, mediaType=application/xml}]</p>
      * <p><b>Payload</b>: {@link Pet} (<i>required: true</i>)</p>
      *
+     * <p><b>Produces</b>: [{isXml=true, mediaType=application/xml}, {isJson=true, mediaType=application/json}]</p>
+     * <p><b>Returns</b>: {@link Pet}</p>
      *
      * <p><b>Responses</b>:</p>
      * <ul>
+     * <li><b>200 (success)</b>: successful operation</li>
      * <li><b>400 (client error)</b>: Invalid ID supplied</li>
      * <li><b>404 (client error)</b>: Pet not found</li>
      * <li><b>405 (client error)</b>: Validation exception</li>
@@ -198,6 +210,8 @@ public interface PathHandlerInterface {
     /**
      * <p>Updates a pet in the store with form data</p>
      *
+     * <p></p>
+     *
      * <p><b>Endpoint</b>: {@link Methods#POST POST} "/v2/pet/{petId}" (<i>privileged: true</i>)</p>
      *
      * <p><b>Request parameters</b>:</p>
@@ -245,6 +259,8 @@ public interface PathHandlerInterface {
     /**
      * <p>uploads an image</p>
      *
+     * <p></p>
+     *
      * <p><b>Endpoint</b>: {@link Methods#POST POST} "/v2/pet/{petId}/uploadImage" (<i>privileged: true</i>)</p>
      *
      * <p><b>Request parameters</b>:</p>
@@ -375,12 +391,17 @@ public interface PathHandlerInterface {
     /**
      * <p>Place an order for a pet</p>
      *
+     * <p></p>
+     *
      * <p><b>Endpoint</b>: {@link Methods#POST POST} "/v2/store/order" (<i>privileged: false</i>)</p>
      *
      * <p><b>Request parameters</b>:</p>
      * <ul>
      * </ul>
      *
+     * <p><b>Consumes</b>: [{isJson=true, mediaType=application/json}]</p>
+     * <p><b>Payload</b>: {@link Order} (<i>required: true</i>)</p>
+     *
      * <p><b>Produces</b>: [{isXml=true, mediaType=application/xml}, {isJson=true, mediaType=application/json}]</p>
      * <p><b>Returns</b>: {@link Order}</p>
      *
@@ -398,12 +419,15 @@ public interface PathHandlerInterface {
      *
      * <p>This can only be done by the logged in user.</p>
      *
-     * <p><b>Endpoint</b>: {@link Methods#POST POST} "/v2/user" (<i>privileged: false</i>)</p>
+     * <p><b>Endpoint</b>: {@link Methods#POST POST} "/v2/user" (<i>privileged: true</i>)</p>
      *
      * <p><b>Request parameters</b>:</p>
      * <ul>
      * </ul>
      *
+     * <p><b>Consumes</b>: [{isJson=true, mediaType=application/json}]</p>
+     * <p><b>Payload</b>: {@link User} (<i>required: true</i>)</p>
+     *
      *
      * <p><b>Responses</b>:</p>
      * <ul>
@@ -416,12 +440,17 @@ public interface PathHandlerInterface {
     /**
      * <p>Creates list of users with given input array</p>
      *
-     * <p><b>Endpoint</b>: {@link Methods#POST POST} "/v2/user/createWithArray" (<i>privileged: false</i>)</p>
+     * <p></p>
+     *
+     * <p><b>Endpoint</b>: {@link Methods#POST POST} "/v2/user/createWithArray" (<i>privileged: true</i>)</p>
      *
      * <p><b>Request parameters</b>:</p>
      * <ul>
      * </ul>
      *
+     * <p><b>Consumes</b>: [{isJson=true, mediaType=application/json}]</p>
+     * <p><b>Payload</b>: {@link java.util.List List} of {@link User} (<i>required: true</i>)</p>
+     *
      *
      * <p><b>Responses</b>:</p>
      * <ul>
@@ -434,12 +463,17 @@ public interface PathHandlerInterface {
     /**
      * <p>Creates list of users with given input array</p>
      *
-     * <p><b>Endpoint</b>: {@link Methods#POST POST} "/v2/user/createWithList" (<i>privileged: false</i>)</p>
+     * <p></p>
+     *
+     * <p><b>Endpoint</b>: {@link Methods#POST POST} "/v2/user/createWithList" (<i>privileged: true</i>)</p>
      *
      * <p><b>Request parameters</b>:</p>
      * <ul>
      * </ul>
      *
+     * <p><b>Consumes</b>: [{isJson=true, mediaType=application/json}]</p>
+     * <p><b>Payload</b>: {@link java.util.List List} of {@link User} (<i>required: true</i>)</p>
+     *
      *
      * <p><b>Responses</b>:</p>
      * <ul>
@@ -454,7 +488,7 @@ public interface PathHandlerInterface {
      *
      * <p>This can only be done by the logged in user.</p>
      *
-     * <p><b>Endpoint</b>: {@link Methods#DELETE DELETE} "/v2/user/{username}" (<i>privileged: false</i>)</p>
+     * <p><b>Endpoint</b>: {@link Methods#DELETE DELETE} "/v2/user/{username}" (<i>privileged: true</i>)</p>
      *
      * <p><b>Request parameters</b>:</p>
      * <ul>
@@ -482,6 +516,8 @@ public interface PathHandlerInterface {
     /**
      * <p>Get user by user name</p>
      *
+     * <p></p>
+     *
      * <p><b>Endpoint</b>: {@link Methods#GET GET} "/v2/user/{username}" (<i>privileged: false</i>)</p>
      *
      * <p><b>Request parameters</b>:</p>
@@ -513,6 +549,8 @@ public interface PathHandlerInterface {
     /**
      * <p>Logs user into the system</p>
      *
+     * <p></p>
+     *
      * <p><b>Endpoint</b>: {@link Methods#GET GET} "/v2/user/login" (<i>privileged: false</i>)</p>
      *
      * <p><b>Request parameters</b>:</p>
@@ -536,7 +574,10 @@ public interface PathHandlerInterface {
      * </p>
      * </li>
      * </ul>
-     * <p><b>Response headers</b>: [CodegenProperty{openApiType='integer', baseName='X-Rate-Limit', complexType='null', getter='getxRateLimit', setter='setxRateLimit', description='calls per hour allowed by the user', dataType='Integer', datatypeWithEnum='Integer', dataFormat='int32', name='xRateLimit', min='null', max='null', defaultValue='null', defaultValueWithParam=' = data.X-Rate-Limit;', baseType='Integer', containerType='null', containerTypeMapped='null', title='null', unescapedDescription='calls per hour allowed by the user', maxLength=null, minLength=null, pattern='null', example='null', jsonSchema='{
+     * <p><b>Response headers</b>: [CodegenProperty{openApiType='string', baseName='Set-Cookie', complexType='null', getter='getSetCookie', setter='setSetCookie', description='Cookie authentication key for use with the `api_key` apiKey authentication.', dataType='String', datatypeWithEnum='String', dataFormat='null', name='setCookie', min='null', max='null', defaultValue='null', defaultValueWithParam=' = data.Set-Cookie;', baseType='String', containerType='null', containerTypeMapped='null', title='null', unescapedDescription='Cookie authentication key for use with the `api_key` apiKey authentication.', maxLength=null, minLength=null, pattern='null', example='AUTH_KEY=abcde12345; Path=/; HttpOnly', jsonSchema='{
+  "type" : "string",
+  "example" : "AUTH_KEY=abcde12345; Path=/; HttpOnly"
+}', minimum='null', maximum='null', exclusiveMinimum=false, exclusiveMaximum=false, required=false, deprecated=false, hasMoreNonReadOnly=false, isPrimitiveType=true, isModel=false, isContainer=false, isString=true, isNumeric=false, isInteger=false, isShort=false, isLong=false, isUnboundedInteger=false, isNumber=false, isFloat=false, isDouble=false, isDecimal=false, isByteArray=false, isBinary=false, isFile=false, isBoolean=false, isDate=false, isDateTime=false, isUuid=false, isUri=false, isEmail=false, isPassword=false, isFreeFormObject=false, isArray=false, isMap=false, isEnum=false, isInnerEnum=false, isEnumRef=false, isAnyType=false, isReadOnly=false, isWriteOnly=false, isNullable=false, isSelfReference=false, isCircularReference=false, isDiscriminator=false, isNew=false, isOverridden=null, _enum=null, allowableValues=null, items=null, additionalProperties=null, vars=[], requiredVars=[], mostInnerItems=null, vendorExtensions={}, hasValidation=false, isInherited=false, discriminatorValue='null', nameInCamelCase='SetCookie', nameInSnakeCase='SET_COOKIE', enumName='null', maxItems=null, minItems=null, maxProperties=null, minProperties=null, uniqueItems=false, uniqueItemsBoolean=null, multipleOf=null, isXmlAttribute=false, xmlPrefix='null', xmlName='null', xmlNamespace='null', isXmlWrapped=false, isNull=false, isVoid=false, getAdditionalPropertiesIsAnyType=false, getHasVars=false, getHasRequired=false, getHasDiscriminatorWithNonEmptyMapping=false, composedSchemas=null, hasMultipleTypes=false, requiredVarsMap=null, ref=null, schemaIsFromAdditionalProperties=false, isBooleanSchemaTrue=false, isBooleanSchemaFalse=false, format=null, dependentRequired=null, contains=null}, CodegenProperty{openApiType='integer', baseName='X-Rate-Limit', complexType='null', getter='getxRateLimit', setter='setxRateLimit', description='calls per hour allowed by the user', dataType='Integer', datatypeWithEnum='Integer', dataFormat='int32', name='xRateLimit', min='null', max='null', defaultValue='null', defaultValueWithParam=' = data.X-Rate-Limit;', baseType='Integer', containerType='null', containerTypeMapped='null', title='null', unescapedDescription='calls per hour allowed by the user', maxLength=null, minLength=null, pattern='null', example='null', jsonSchema='{
   "type" : "integer",
   "format" : "int32"
 }', minimum='null', maximum='null', exclusiveMinimum=false, exclusiveMaximum=false, required=false, deprecated=false, hasMoreNonReadOnly=false, isPrimitiveType=true, isModel=false, isContainer=false, isString=false, isNumeric=true, isInteger=true, isShort=true, isLong=false, isUnboundedInteger=false, isNumber=false, isFloat=false, isDouble=false, isDecimal=false, isByteArray=false, isBinary=false, isFile=false, isBoolean=false, isDate=false, isDateTime=false, isUuid=false, isUri=false, isEmail=false, isPassword=false, isFreeFormObject=false, isArray=false, isMap=false, isEnum=false, isInnerEnum=false, isEnumRef=false, isAnyType=false, isReadOnly=false, isWriteOnly=false, isNullable=false, isSelfReference=false, isCircularReference=false, isDiscriminator=false, isNew=false, isOverridden=null, _enum=null, allowableValues=null, items=null, additionalProperties=null, vars=[], requiredVars=[], mostInnerItems=null, vendorExtensions={}, hasValidation=false, isInherited=false, discriminatorValue='null', nameInCamelCase='XRateLimit', nameInSnakeCase='X_RATE_LIMIT', enumName='null', maxItems=null, minItems=null, maxProperties=null, minProperties=null, uniqueItems=false, uniqueItemsBoolean=null, multipleOf=null, isXmlAttribute=false, xmlPrefix='null', xmlName='null', xmlNamespace='null', isXmlWrapped=false, isNull=false, isVoid=false, getAdditionalPropertiesIsAnyType=false, getHasVars=false, getHasRequired=false, getHasDiscriminatorWithNonEmptyMapping=false, composedSchemas=null, hasMultipleTypes=false, requiredVarsMap=null, ref=null, schemaIsFromAdditionalProperties=false, isBooleanSchemaTrue=false, isBooleanSchemaFalse=false, format=int32, dependentRequired=null, contains=null}, CodegenProperty{openApiType='string', baseName='X-Expires-After', complexType='Date', getter='getxExpiresAfter', setter='setxExpiresAfter', description='date in UTC when token expires', dataType='Date', datatypeWithEnum='Date', dataFormat='date-time', name='xExpiresAfter', min='null', max='null', defaultValue='null', defaultValueWithParam=' = data.X-Expires-After;', baseType='Date', containerType='null', containerTypeMapped='null', title='null', unescapedDescription='date in UTC when token expires', maxLength=null, minLength=null, pattern='null', example='null', jsonSchema='{
@@ -559,7 +600,9 @@ public interface PathHandlerInterface {
     /**
      * <p>Logs out current logged in user session</p>
      *
-     * <p><b>Endpoint</b>: {@link Methods#GET GET} "/v2/user/logout" (<i>privileged: false</i>)</p>
+     * <p></p>
+     *
+     * <p><b>Endpoint</b>: {@link Methods#GET GET} "/v2/user/logout" (<i>privileged: true</i>)</p>
      *
      *
      * <p><b>Responses</b>:</p>
@@ -575,7 +618,7 @@ public interface PathHandlerInterface {
      *
      * <p>This can only be done by the logged in user.</p>
      *
-     * <p><b>Endpoint</b>: {@link Methods#PUT PUT} "/v2/user/{username}" (<i>privileged: false</i>)</p>
+     * <p><b>Endpoint</b>: {@link Methods#PUT PUT} "/v2/user/{username}" (<i>privileged: true</i>)</p>
      *
      * <p><b>Request parameters</b>:</p>
      * <ul>
@@ -590,6 +633,9 @@ public interface PathHandlerInterface {
      * </li>
      * </ul>
      *
+     * <p><b>Consumes</b>: [{isJson=true, mediaType=application/json}]</p>
+     * <p><b>Payload</b>: {@link User} (<i>required: true</i>)</p>
+     *
      *
      * <p><b>Responses</b>:</p>
      * <ul>
diff --git a/samples/server/petstore/java-undertow/src/main/resources/config/openapi.json b/samples/server/petstore/java-undertow/src/main/resources/config/openapi.json
index 8b12859e647..04da14326f8 100644
--- a/samples/server/petstore/java-undertow/src/main/resources/config/openapi.json
+++ b/samples/server/petstore/java-undertow/src/main/resources/config/openapi.json
@@ -1,5 +1,5 @@
 {
-  "openapi" : "3.0.1",
+  "openapi" : "3.0.0",
   "info" : {
     "description" : "This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.",
     "license" : {
@@ -9,6 +9,10 @@
     "title" : "OpenAPI Petstore",
     "version" : "1.0.0"
   },
+  "externalDocs" : {
+    "description" : "Find out more about Swagger",
+    "url" : "http://swagger.io"
+  },
   "servers" : [ {
     "url" : "http://petstore.swagger.io/v2"
   } ],
@@ -25,26 +29,28 @@
   "paths" : {
     "/pet" : {
       "post" : {
+        "description" : "",
         "operationId" : "addPet",
         "requestBody" : {
-          "content" : {
-            "application/json" : {
-              "schema" : {
-                "$ref" : "#/components/schemas/Pet"
-              }
-            },
-            "application/xml" : {
-              "schema" : {
-                "$ref" : "#/components/schemas/Pet"
-              }
-            }
-          },
-          "description" : "Pet object that needs to be added to the store",
-          "required" : true
+          "$ref" : "#/components/requestBodies/Pet"
         },
         "responses" : {
+          "200" : {
+            "content" : {
+              "application/xml" : {
+                "schema" : {
+                  "$ref" : "#/components/schemas/Pet"
+                }
+              },
+              "application/json" : {
+                "schema" : {
+                  "$ref" : "#/components/schemas/Pet"
+                }
+              }
+            },
+            "description" : "successful operation"
+          },
           "405" : {
-            "content" : { },
             "description" : "Invalid input"
           }
         },
@@ -53,39 +59,42 @@
         } ],
         "summary" : "Add a new pet to the store",
         "tags" : [ "pet" ],
-        "x-codegen-request-body-name" : "body",
         "x-content-type" : "application/json",
         "x-accepts" : "application/json"
       },
       "put" : {
+        "description" : "",
+        "externalDocs" : {
+          "description" : "API documentation for the updatePet operation",
+          "url" : "http://petstore.swagger.io/v2/doc/updatePet"
+        },
         "operationId" : "updatePet",
         "requestBody" : {
-          "content" : {
-            "application/json" : {
-              "schema" : {
-                "$ref" : "#/components/schemas/Pet"
-              }
-            },
-            "application/xml" : {
-              "schema" : {
-                "$ref" : "#/components/schemas/Pet"
-              }
-            }
-          },
-          "description" : "Pet object that needs to be added to the store",
-          "required" : true
+          "$ref" : "#/components/requestBodies/Pet"
         },
         "responses" : {
+          "200" : {
+            "content" : {
+              "application/xml" : {
+                "schema" : {
+                  "$ref" : "#/components/schemas/Pet"
+                }
+              },
+              "application/json" : {
+                "schema" : {
+                  "$ref" : "#/components/schemas/Pet"
+                }
+              }
+            },
+            "description" : "successful operation"
+          },
           "400" : {
-            "content" : { },
             "description" : "Invalid ID supplied"
           },
           "404" : {
-            "content" : { },
             "description" : "Pet not found"
           },
           "405" : {
-            "content" : { },
             "description" : "Validation exception"
           }
         },
@@ -94,7 +103,6 @@
         } ],
         "summary" : "Update an existing pet",
         "tags" : [ "pet" ],
-        "x-codegen-request-body-name" : "body",
         "x-content-type" : "application/json",
         "x-accepts" : "application/json"
       }
@@ -104,6 +112,7 @@
         "description" : "Multiple status values can be provided with comma separated strings",
         "operationId" : "findPetsByStatus",
         "parameters" : [ {
+          "deprecated" : true,
           "description" : "Status values that need to be considered for filter",
           "explode" : false,
           "in" : "query",
@@ -142,12 +151,11 @@
             "description" : "successful operation"
           },
           "400" : {
-            "content" : { },
             "description" : "Invalid status value"
           }
         },
         "security" : [ {
-          "petstore_auth" : [ "write:pets", "read:pets" ]
+          "petstore_auth" : [ "read:pets" ]
         } ],
         "summary" : "Finds Pets by status",
         "tags" : [ "pet" ],
@@ -196,12 +204,11 @@
             "description" : "successful operation"
           },
           "400" : {
-            "content" : { },
             "description" : "Invalid tag value"
           }
         },
         "security" : [ {
-          "petstore_auth" : [ "write:pets", "read:pets" ]
+          "petstore_auth" : [ "read:pets" ]
         } ],
         "summary" : "Finds Pets by tags",
         "tags" : [ "pet" ],
@@ -210,26 +217,31 @@
     },
     "/pet/{petId}" : {
       "delete" : {
+        "description" : "",
         "operationId" : "deletePet",
         "parameters" : [ {
+          "explode" : false,
           "in" : "header",
           "name" : "api_key",
+          "required" : false,
           "schema" : {
             "type" : "string"
-          }
+          },
+          "style" : "simple"
         }, {
           "description" : "Pet id to delete",
+          "explode" : false,
           "in" : "path",
           "name" : "petId",
           "required" : true,
           "schema" : {
             "format" : "int64",
             "type" : "integer"
-          }
+          },
+          "style" : "simple"
         } ],
         "responses" : {
           "400" : {
-            "content" : { },
             "description" : "Invalid pet value"
           }
         },
@@ -245,13 +257,15 @@
         "operationId" : "getPetById",
         "parameters" : [ {
           "description" : "ID of pet to return",
+          "explode" : false,
           "in" : "path",
           "name" : "petId",
           "required" : true,
           "schema" : {
             "format" : "int64",
             "type" : "integer"
-          }
+          },
+          "style" : "simple"
         } ],
         "responses" : {
           "200" : {
@@ -270,11 +284,9 @@
             "description" : "successful operation"
           },
           "400" : {
-            "content" : { },
             "description" : "Invalid ID supplied"
           },
           "404" : {
-            "content" : { },
             "description" : "Pet not found"
           }
         },
@@ -286,16 +298,19 @@
         "x-accepts" : "application/json"
       },
       "post" : {
+        "description" : "",
         "operationId" : "updatePetWithForm",
         "parameters" : [ {
           "description" : "ID of pet that needs to be updated",
+          "explode" : false,
           "in" : "path",
           "name" : "petId",
           "required" : true,
           "schema" : {
             "format" : "int64",
             "type" : "integer"
-          }
+          },
+          "style" : "simple"
         } ],
         "requestBody" : {
           "content" : {
@@ -308,7 +323,6 @@
         },
         "responses" : {
           "405" : {
-            "content" : { },
             "description" : "Invalid input"
           }
         },
@@ -323,16 +337,19 @@
     },
     "/pet/{petId}/uploadImage" : {
       "post" : {
+        "description" : "",
         "operationId" : "uploadFile",
         "parameters" : [ {
           "description" : "ID of pet to update",
+          "explode" : false,
           "in" : "path",
           "name" : "petId",
           "required" : true,
           "schema" : {
             "format" : "int64",
             "type" : "integer"
-          }
+          },
+          "style" : "simple"
         } ],
         "requestBody" : {
           "content" : {
@@ -394,10 +411,11 @@
     },
     "/store/order" : {
       "post" : {
+        "description" : "",
         "operationId" : "placeOrder",
         "requestBody" : {
           "content" : {
-            "*/*" : {
+            "application/json" : {
               "schema" : {
                 "$ref" : "#/components/schemas/Order"
               }
@@ -423,14 +441,12 @@
             "description" : "successful operation"
           },
           "400" : {
-            "content" : { },
             "description" : "Invalid Order"
           }
         },
         "summary" : "Place an order for a pet",
         "tags" : [ "store" ],
-        "x-codegen-request-body-name" : "body",
-        "x-content-type" : "*/*",
+        "x-content-type" : "application/json",
         "x-accepts" : "application/json"
       }
     },
@@ -440,20 +456,20 @@
         "operationId" : "deleteOrder",
         "parameters" : [ {
           "description" : "ID of the order that needs to be deleted",
+          "explode" : false,
           "in" : "path",
           "name" : "orderId",
           "required" : true,
           "schema" : {
             "type" : "string"
-          }
+          },
+          "style" : "simple"
         } ],
         "responses" : {
           "400" : {
-            "content" : { },
             "description" : "Invalid ID supplied"
           },
           "404" : {
-            "content" : { },
             "description" : "Order not found"
           }
         },
@@ -466,6 +482,7 @@
         "operationId" : "getOrderById",
         "parameters" : [ {
           "description" : "ID of pet that needs to be fetched",
+          "explode" : false,
           "in" : "path",
           "name" : "orderId",
           "required" : true,
@@ -474,7 +491,8 @@
             "maximum" : 5,
             "minimum" : 1,
             "type" : "integer"
-          }
+          },
+          "style" : "simple"
         } ],
         "responses" : {
           "200" : {
@@ -493,11 +511,9 @@
             "description" : "successful operation"
           },
           "400" : {
-            "content" : { },
             "description" : "Invalid ID supplied"
           },
           "404" : {
-            "content" : { },
             "description" : "Order not found"
           }
         },
@@ -512,7 +528,7 @@
         "operationId" : "createUser",
         "requestBody" : {
           "content" : {
-            "*/*" : {
+            "application/json" : {
               "schema" : {
                 "$ref" : "#/components/schemas/User"
               }
@@ -523,96 +539,85 @@
         },
         "responses" : {
           "default" : {
-            "content" : { },
             "description" : "successful operation"
           }
         },
+        "security" : [ {
+          "api_key" : [ ]
+        } ],
         "summary" : "Create user",
         "tags" : [ "user" ],
-        "x-codegen-request-body-name" : "body",
-        "x-content-type" : "*/*",
+        "x-content-type" : "application/json",
         "x-accepts" : "application/json"
       }
     },
     "/user/createWithArray" : {
       "post" : {
+        "description" : "",
         "operationId" : "createUsersWithArrayInput",
         "requestBody" : {
-          "content" : {
-            "*/*" : {
-              "schema" : {
-                "items" : {
-                  "$ref" : "#/components/schemas/User"
-                },
-                "type" : "array"
-              }
-            }
-          },
-          "description" : "List of user object",
-          "required" : true
+          "$ref" : "#/components/requestBodies/UserArray"
         },
         "responses" : {
           "default" : {
-            "content" : { },
             "description" : "successful operation"
           }
         },
+        "security" : [ {
+          "api_key" : [ ]
+        } ],
         "summary" : "Creates list of users with given input array",
         "tags" : [ "user" ],
-        "x-codegen-request-body-name" : "body",
-        "x-content-type" : "*/*",
+        "x-content-type" : "application/json",
         "x-accepts" : "application/json"
       }
     },
     "/user/createWithList" : {
       "post" : {
+        "description" : "",
         "operationId" : "createUsersWithListInput",
         "requestBody" : {
-          "content" : {
-            "*/*" : {
-              "schema" : {
-                "items" : {
-                  "$ref" : "#/components/schemas/User"
-                },
-                "type" : "array"
-              }
-            }
-          },
-          "description" : "List of user object",
-          "required" : true
+          "$ref" : "#/components/requestBodies/UserArray"
         },
         "responses" : {
           "default" : {
-            "content" : { },
             "description" : "successful operation"
           }
         },
+        "security" : [ {
+          "api_key" : [ ]
+        } ],
         "summary" : "Creates list of users with given input array",
         "tags" : [ "user" ],
-        "x-codegen-request-body-name" : "body",
-        "x-content-type" : "*/*",
+        "x-content-type" : "application/json",
         "x-accepts" : "application/json"
       }
     },
     "/user/login" : {
       "get" : {
+        "description" : "",
         "operationId" : "loginUser",
         "parameters" : [ {
           "description" : "The user name for login",
+          "explode" : true,
           "in" : "query",
           "name" : "username",
           "required" : true,
           "schema" : {
+            "pattern" : "^[a-zA-Z0-9]+[a-zA-Z0-9\\.\\-_]*[a-zA-Z0-9]+$",
             "type" : "string"
-          }
+          },
+          "style" : "form"
         }, {
           "description" : "The password for login in clear text",
+          "explode" : true,
           "in" : "query",
           "name" : "password",
           "required" : true,
           "schema" : {
             "type" : "string"
-          }
+          },
+          "style" : "form"
         } ],
         "responses" : {
           "200" : {
@@ -630,24 +635,36 @@
             },
             "description" : "successful operation",
             "headers" : {
+              "Set-Cookie" : {
+                "description" : "Cookie authentication key for use with the `api_key` apiKey authentication.",
+                "explode" : false,
+                "schema" : {
+                  "example" : "AUTH_KEY=abcde12345; Path=/; HttpOnly",
+                  "type" : "string"
+                },
+                "style" : "simple"
+              },
               "X-Rate-Limit" : {
                 "description" : "calls per hour allowed by the user",
+                "explode" : false,
                 "schema" : {
                   "format" : "int32",
                   "type" : "integer"
-                }
+                },
+                "style" : "simple"
               },
               "X-Expires-After" : {
                 "description" : "date in UTC when token expires",
+                "explode" : false,
                 "schema" : {
                   "format" : "date-time",
                   "type" : "string"
-                }
+                },
+                "style" : "simple"
               }
             }
           },
           "400" : {
-            "content" : { },
             "description" : "Invalid username/password supplied"
           }
         },
@@ -658,13 +675,16 @@
     },
     "/user/logout" : {
       "get" : {
+        "description" : "",
         "operationId" : "logoutUser",
         "responses" : {
           "default" : {
-            "content" : { },
             "description" : "successful operation"
           }
         },
+        "security" : [ {
+          "api_key" : [ ]
+        } ],
         "summary" : "Logs out current logged in user session",
         "tags" : [ "user" ],
         "x-accepts" : "application/json"
@@ -676,37 +696,43 @@
         "operationId" : "deleteUser",
         "parameters" : [ {
           "description" : "The name that needs to be deleted",
+          "explode" : false,
           "in" : "path",
           "name" : "username",
           "required" : true,
           "schema" : {
             "type" : "string"
-          }
+          },
+          "style" : "simple"
         } ],
         "responses" : {
           "400" : {
-            "content" : { },
             "description" : "Invalid username supplied"
           },
           "404" : {
-            "content" : { },
             "description" : "User not found"
           }
         },
+        "security" : [ {
+          "api_key" : [ ]
+        } ],
         "summary" : "Delete user",
         "tags" : [ "user" ],
         "x-accepts" : "application/json"
       },
       "get" : {
+        "description" : "",
         "operationId" : "getUserByName",
         "parameters" : [ {
           "description" : "The name that needs to be fetched. Use user1 for testing.",
+          "explode" : false,
           "in" : "path",
           "name" : "username",
           "required" : true,
           "schema" : {
             "type" : "string"
-          }
+          },
+          "style" : "simple"
         } ],
         "responses" : {
           "200" : {
@@ -725,11 +751,9 @@
             "description" : "successful operation"
           },
           "400" : {
-            "content" : { },
             "description" : "Invalid username supplied"
           },
           "404" : {
-            "content" : { },
             "description" : "User not found"
           }
         },
@@ -742,16 +766,18 @@
         "operationId" : "updateUser",
         "parameters" : [ {
           "description" : "name that need to be deleted",
+          "explode" : false,
           "in" : "path",
           "name" : "username",
           "required" : true,
           "schema" : {
             "type" : "string"
-          }
+          },
+          "style" : "simple"
         } ],
         "requestBody" : {
           "content" : {
-            "*/*" : {
+            "application/json" : {
               "schema" : {
                 "$ref" : "#/components/schemas/User"
               }
@@ -762,23 +788,55 @@
         },
         "responses" : {
           "400" : {
-            "content" : { },
             "description" : "Invalid user supplied"
           },
           "404" : {
-            "content" : { },
             "description" : "User not found"
           }
         },
+        "security" : [ {
+          "api_key" : [ ]
+        } ],
         "summary" : "Updated user",
         "tags" : [ "user" ],
-        "x-codegen-request-body-name" : "body",
-        "x-content-type" : "*/*",
+        "x-content-type" : "application/json",
         "x-accepts" : "application/json"
       }
     }
   },
   "components" : {
+    "requestBodies" : {
+      "UserArray" : {
+        "content" : {
+          "application/json" : {
+            "schema" : {
+              "items" : {
+                "$ref" : "#/components/schemas/User"
+              },
+              "type" : "array"
+            }
+          }
+        },
+        "description" : "List of user object",
+        "required" : true
+      },
+      "Pet" : {
+        "content" : {
+          "application/json" : {
+            "schema" : {
+              "$ref" : "#/components/schemas/Pet"
+            }
+          },
+          "application/xml" : {
+            "schema" : {
+              "$ref" : "#/components/schemas/Pet"
+            }
+          }
+        },
+        "description" : "Pet object that needs to be added to the store",
+        "required" : true
+      }
+    },
     "schemas" : {
       "Order" : {
         "description" : "An order for a pets from the pet store",
@@ -835,6 +893,7 @@
             "type" : "integer"
           },
           "name" : {
+            "pattern" : "^[a-zA-Z0-9]+[a-zA-Z0-9\\.\\-_]*[a-zA-Z0-9]+$",
             "type" : "string"
           }
         },
@@ -964,6 +1023,7 @@
             }
           },
           "status" : {
+            "deprecated" : true,
             "description" : "pet status in the store",
             "enum" : [ "available", "pending", "sold" ],
             "type" : "string"
@@ -1045,6 +1105,5 @@
         "type" : "apiKey"
       }
     }
-  },
-  "x-original-swagger-version" : "2.0"
+  }
 }
\ No newline at end of file