[Java][WebClient] return ResponseSpec to manually control response handling (#12843)

modules/openapi-generator/src/main/resources/Java/libraries/webclient/api.mustache

@@ -152,10 +152,39 @@ public class {{classname}} {
         {{^returnType}}{{^vendorExtensions.x-webclient-blocking}}return {{/vendorExtensions.x-webclient-blocking}}{{/returnType}}{{#returnType}}return {{/returnType}}{{operationId}}RequestCreation({{#allParams}}{{paramName}}{{^-last}}, {{/-last}}{{/allParams}}).{{#isArray}}bodyToFlux{{/isArray}}{{^isArray}}bodyToMono{{/isArray}}(localVarReturnType){{#vendorExtensions.x-webclient-blocking}}{{#isArray}}{{#uniqueItems}}.collect(Collectors.toSet()){{/uniqueItems}}{{^uniqueItems}}.collectList(){{/uniqueItems}}{{/isArray}}.block(){{/vendorExtensions.x-webclient-blocking}};
     }
 
+    /**
+     * {{summary}}
+     * {{notes}}
+{{#responses}}     * <p><b>{{code}}</b>{{#message}} - {{.}}{{/message}}
+{{/responses}}{{#allParams}}     * @param {{paramName}} {{description}}{{^description}}The {{paramName}} parameter{{/description}}
+{{/allParams}}{{#returnType}}     * @return ResponseEntity&lt;{{.}}&gt;
+{{/returnType}}     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+{{#externalDocs}}
+     * {{description}}
+     * @see <a href="{{url}}">{{summary}} Documentation</a>
+{{/externalDocs}}
+     */
     public {{#vendorExtensions.x-webclient-blocking}}{{#returnType}}{{#isArray}}ResponseEntity<List<{{{returnBaseType}}}>>{{/isArray}}{{^isArray}}ResponseEntity<{{{returnType}}}>{{/isArray}}{{/returnType}}{{^returnType}}ResponseEntity<Void>{{/returnType}} {{/vendorExtensions.x-webclient-blocking}}{{^vendorExtensions.x-webclient-blocking}}{{#returnType}}{{#isArray}}Mono<ResponseEntity<List<{{{returnBaseType}}}>>>{{/isArray}}{{^isArray}}Mono<ResponseEntity<{{{returnType}}}>>{{/isArray}}{{/returnType}}{{^returnType}}Mono<ResponseEntity<Void>>{{/returnType}} {{/vendorExtensions.x-webclient-blocking}}{{operationId}}WithHttpInfo({{#allParams}}{{#isFile}}{{#useAbstractionForFiles}}{{#collectionFormat}}java.util.Collection<org.springframework.core.io.AbstractResource>{{/collectionFormat}}{{^collectionFormat}}org.springframework.core.io.AbstractResource{{/collectionFormat}}{{/useAbstractionForFiles}}{{^useAbstractionForFiles}}{{{dataType}}}{{/useAbstractionForFiles}}{{/isFile}}{{^isFile}}{{{dataType}}}{{/isFile}} {{paramName}}{{^-last}}, {{/-last}}{{/allParams}}) throws WebClientResponseException {
         {{#returnType}}ParameterizedTypeReference<{{#isArray}}{{{returnBaseType}}}{{/isArray}}{{^isArray}}{{{returnType}}}{{/isArray}}> localVarReturnType = new ParameterizedTypeReference<{{#isArray}}{{{returnBaseType}}}{{/isArray}}{{^isArray}}{{{returnType}}}{{/isArray}}>() {};{{/returnType}}{{^returnType}}ParameterizedTypeReference<Void> localVarReturnType = new ParameterizedTypeReference<Void>() {};{{/returnType}}
         return {{operationId}}RequestCreation({{#allParams}}{{paramName}}{{^-last}}, {{/-last}}{{/allParams}}).{{#isArray}}toEntityList{{/isArray}}{{^isArray}}toEntity{{/isArray}}(localVarReturnType){{#vendorExtensions.x-webclient-blocking}}.block(){{/vendorExtensions.x-webclient-blocking}};
     }
+
+    /**
+     * {{summary}}
+     * {{notes}}
+{{#responses}}     * <p><b>{{code}}</b>{{#message}} - {{.}}{{/message}}
+{{/responses}}{{#allParams}}     * @param {{paramName}} {{description}}{{^description}}The {{paramName}} parameter{{/description}}
+{{/allParams}}
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+{{#externalDocs}}
+     * {{description}}
+     * @see <a href="{{url}}">{{summary}} Documentation</a>
+{{/externalDocs}}
+     */
+    public ResponseSpec {{operationId}}WithResponseSpec({{#allParams}}{{#isFile}}{{#useAbstractionForFiles}}{{#collectionFormat}}java.util.Collection<org.springframework.core.io.AbstractResource>{{/collectionFormat}}{{^collectionFormat}}org.springframework.core.io.AbstractResource{{/collectionFormat}}{{/useAbstractionForFiles}}{{^useAbstractionForFiles}}{{{dataType}}}{{/useAbstractionForFiles}}{{/isFile}}{{^isFile}}{{{dataType}}}{{/isFile}} {{paramName}}{{^-last}}, {{/-last}}{{/allParams}}) throws WebClientResponseException {
+        return {{operationId}}RequestCreation({{#allParams}}{{paramName}}{{^-last}}, {{/-last}}{{/allParams}});
+    }
     {{/operation}}
 }
 {{/operations}}

samples/client/petstore/java/webclient-nulable-arrays/src/main/java/org/openapitools/client/api/DefaultApi.java

@@ -88,8 +88,26 @@ public class DefaultApi {
         return nullableArrayTestGetRequestCreation().bodyToFlux(localVarReturnType);
     }
 
+    /**
+     * 
+     * 
+     * <p><b>200</b> - 
+     * @return ResponseEntity&lt;List&lt;ByteArrayObject&gt;&gt;
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<List<ByteArrayObject>>> nullableArrayTestGetWithHttpInfo() throws WebClientResponseException {
         ParameterizedTypeReference<ByteArrayObject> localVarReturnType = new ParameterizedTypeReference<ByteArrayObject>() {};
         return nullableArrayTestGetRequestCreation().toEntityList(localVarReturnType);
     }
+
+    /**
+     * 
+     * 
+     * <p><b>200</b> - 
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec nullableArrayTestGetWithResponseSpec() throws WebClientResponseException {
+        return nullableArrayTestGetRequestCreation();
+    }
 }

samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/api/AnotherFakeApi.java

@@ -96,8 +96,28 @@ public class AnotherFakeApi {
         return call123testSpecialTagsRequestCreation(client).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * To test special tags
+     * To test special tags and operation ID starting with number
+     * <p><b>200</b> - successful operation
+     * @param client client model
+     * @return ResponseEntity&lt;Client&gt;
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<Client>> call123testSpecialTagsWithHttpInfo(Client client) throws WebClientResponseException {
         ParameterizedTypeReference<Client> localVarReturnType = new ParameterizedTypeReference<Client>() {};
         return call123testSpecialTagsRequestCreation(client).toEntity(localVarReturnType);
     }
+
+    /**
+     * To test special tags
+     * To test special tags and operation ID starting with number
+     * <p><b>200</b> - successful operation
+     * @param client client model
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec call123testSpecialTagsWithResponseSpec(Client client) throws WebClientResponseException {
+        return call123testSpecialTagsRequestCreation(client);
+    }
 }

samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/api/DefaultApi.java

@@ -88,8 +88,26 @@ public class DefaultApi {
         return fooGetRequestCreation().bodyToMono(localVarReturnType);
     }
 
+    /**
+     * 
+     * 
+     * <p><b>0</b> - response
+     * @return ResponseEntity&lt;FooGetDefaultResponse&gt;
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<FooGetDefaultResponse>> fooGetWithHttpInfo() throws WebClientResponseException {
         ParameterizedTypeReference<FooGetDefaultResponse> localVarReturnType = new ParameterizedTypeReference<FooGetDefaultResponse>() {};
         return fooGetRequestCreation().toEntity(localVarReturnType);
     }
+
+    /**
+     * 
+     * 
+     * <p><b>0</b> - response
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec fooGetWithResponseSpec() throws WebClientResponseException {
+        return fooGetRequestCreation();
+    }
 }

samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/api/FakeApi.java

@@ -99,10 +99,28 @@ public class FakeApi {
         return fakeHealthGetRequestCreation().bodyToMono(localVarReturnType);
     }
 
+    /**
+     * Health check endpoint
+     * 
+     * <p><b>200</b> - The instance started successfully
+     * @return ResponseEntity&lt;HealthCheckResult&gt;
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<HealthCheckResult>> fakeHealthGetWithHttpInfo() throws WebClientResponseException {
         ParameterizedTypeReference<HealthCheckResult> localVarReturnType = new ParameterizedTypeReference<HealthCheckResult>() {};
         return fakeHealthGetRequestCreation().toEntity(localVarReturnType);
     }
+
+    /**
+     * Health check endpoint
+     * 
+     * <p><b>200</b> - The instance started successfully
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec fakeHealthGetWithResponseSpec() throws WebClientResponseException {
+        return fakeHealthGetRequestCreation();
+    }
     /**
      * test http signature authentication
      * 
@@ -157,10 +175,33 @@ public class FakeApi {
         return fakeHttpSignatureTestRequestCreation(pet, query1, header1).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * test http signature authentication
+     * 
+     * <p><b>200</b> - The instance started successfully
+     * @param pet Pet object that needs to be added to the store
+     * @param query1 query parameter
+     * @param header1 header parameter
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<Void>> fakeHttpSignatureTestWithHttpInfo(Pet pet, String query1, String header1) throws WebClientResponseException {
         ParameterizedTypeReference<Void> localVarReturnType = new ParameterizedTypeReference<Void>() {};
         return fakeHttpSignatureTestRequestCreation(pet, query1, header1).toEntity(localVarReturnType);
     }
+
+    /**
+     * test http signature authentication
+     * 
+     * <p><b>200</b> - The instance started successfully
+     * @param pet Pet object that needs to be added to the store
+     * @param query1 query parameter
+     * @param header1 header parameter
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec fakeHttpSignatureTestWithResponseSpec(Pet pet, String query1, String header1) throws WebClientResponseException {
+        return fakeHttpSignatureTestRequestCreation(pet, query1, header1);
+    }
     /**
      * 
      * Test serialization of outer boolean types
@@ -207,10 +248,30 @@ public class FakeApi {
         return fakeOuterBooleanSerializeRequestCreation(body).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * 
+     * Test serialization of outer boolean types
+     * <p><b>200</b> - Output boolean
+     * @param body Input boolean as post body
+     * @return ResponseEntity&lt;Boolean&gt;
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<Boolean>> fakeOuterBooleanSerializeWithHttpInfo(Boolean body) throws WebClientResponseException {
         ParameterizedTypeReference<Boolean> localVarReturnType = new ParameterizedTypeReference<Boolean>() {};
         return fakeOuterBooleanSerializeRequestCreation(body).toEntity(localVarReturnType);
     }
+
+    /**
+     * 
+     * Test serialization of outer boolean types
+     * <p><b>200</b> - Output boolean
+     * @param body Input boolean as post body
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec fakeOuterBooleanSerializeWithResponseSpec(Boolean body) throws WebClientResponseException {
+        return fakeOuterBooleanSerializeRequestCreation(body);
+    }
     /**
      * 
      * Test serialization of object with outer number type
@@ -257,10 +318,30 @@ public class FakeApi {
         return fakeOuterCompositeSerializeRequestCreation(outerComposite).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * 
+     * Test serialization of object with outer number type
+     * <p><b>200</b> - Output composite
+     * @param outerComposite Input composite as post body
+     * @return ResponseEntity&lt;OuterComposite&gt;
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<OuterComposite>> fakeOuterCompositeSerializeWithHttpInfo(OuterComposite outerComposite) throws WebClientResponseException {
         ParameterizedTypeReference<OuterComposite> localVarReturnType = new ParameterizedTypeReference<OuterComposite>() {};
         return fakeOuterCompositeSerializeRequestCreation(outerComposite).toEntity(localVarReturnType);
     }
+
+    /**
+     * 
+     * Test serialization of object with outer number type
+     * <p><b>200</b> - Output composite
+     * @param outerComposite Input composite as post body
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec fakeOuterCompositeSerializeWithResponseSpec(OuterComposite outerComposite) throws WebClientResponseException {
+        return fakeOuterCompositeSerializeRequestCreation(outerComposite);
+    }
     /**
      * 
      * Test serialization of outer number types
@@ -307,10 +388,30 @@ public class FakeApi {
         return fakeOuterNumberSerializeRequestCreation(body).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * 
+     * Test serialization of outer number types
+     * <p><b>200</b> - Output number
+     * @param body Input number as post body
+     * @return ResponseEntity&lt;BigDecimal&gt;
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<BigDecimal>> fakeOuterNumberSerializeWithHttpInfo(BigDecimal body) throws WebClientResponseException {
         ParameterizedTypeReference<BigDecimal> localVarReturnType = new ParameterizedTypeReference<BigDecimal>() {};
         return fakeOuterNumberSerializeRequestCreation(body).toEntity(localVarReturnType);
     }
+
+    /**
+     * 
+     * Test serialization of outer number types
+     * <p><b>200</b> - Output number
+     * @param body Input number as post body
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec fakeOuterNumberSerializeWithResponseSpec(BigDecimal body) throws WebClientResponseException {
+        return fakeOuterNumberSerializeRequestCreation(body);
+    }
     /**
      * 
      * Test serialization of outer string types
@@ -357,10 +458,30 @@ public class FakeApi {
         return fakeOuterStringSerializeRequestCreation(body).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * 
+     * Test serialization of outer string types
+     * <p><b>200</b> - Output string
+     * @param body Input string as post body
+     * @return ResponseEntity&lt;String&gt;
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<String>> fakeOuterStringSerializeWithHttpInfo(String body) throws WebClientResponseException {
         ParameterizedTypeReference<String> localVarReturnType = new ParameterizedTypeReference<String>() {};
         return fakeOuterStringSerializeRequestCreation(body).toEntity(localVarReturnType);
     }
+
+    /**
+     * 
+     * Test serialization of outer string types
+     * <p><b>200</b> - Output string
+     * @param body Input string as post body
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec fakeOuterStringSerializeWithResponseSpec(String body) throws WebClientResponseException {
+        return fakeOuterStringSerializeRequestCreation(body);
+    }
     /**
      * 
      * Test serialization of enum (int) properties with examples
@@ -411,10 +532,30 @@ public class FakeApi {
         return fakePropertyEnumIntegerSerializeRequestCreation(outerObjectWithEnumProperty).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * 
+     * Test serialization of enum (int) properties with examples
+     * <p><b>200</b> - Output enum (int)
+     * @param outerObjectWithEnumProperty Input enum (int) as post body
+     * @return ResponseEntity&lt;OuterObjectWithEnumProperty&gt;
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<OuterObjectWithEnumProperty>> fakePropertyEnumIntegerSerializeWithHttpInfo(OuterObjectWithEnumProperty outerObjectWithEnumProperty) throws WebClientResponseException {
         ParameterizedTypeReference<OuterObjectWithEnumProperty> localVarReturnType = new ParameterizedTypeReference<OuterObjectWithEnumProperty>() {};
         return fakePropertyEnumIntegerSerializeRequestCreation(outerObjectWithEnumProperty).toEntity(localVarReturnType);
     }
+
+    /**
+     * 
+     * Test serialization of enum (int) properties with examples
+     * <p><b>200</b> - Output enum (int)
+     * @param outerObjectWithEnumProperty Input enum (int) as post body
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec fakePropertyEnumIntegerSerializeWithResponseSpec(OuterObjectWithEnumProperty outerObjectWithEnumProperty) throws WebClientResponseException {
+        return fakePropertyEnumIntegerSerializeRequestCreation(outerObjectWithEnumProperty);
+    }
     /**
      * 
      * For this test, the body has to be a binary file.
@@ -461,10 +602,29 @@ public class FakeApi {
         return testBodyWithBinaryRequestCreation(body).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * 
+     * For this test, the body has to be a binary file.
+     * <p><b>200</b> - Success
+     * @param body image to upload
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<Void>> testBodyWithBinaryWithHttpInfo(File body) throws WebClientResponseException {
         ParameterizedTypeReference<Void> localVarReturnType = new ParameterizedTypeReference<Void>() {};
         return testBodyWithBinaryRequestCreation(body).toEntity(localVarReturnType);
     }
+
+    /**
+     * 
+     * For this test, the body has to be a binary file.
+     * <p><b>200</b> - Success
+     * @param body image to upload
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec testBodyWithBinaryWithResponseSpec(File body) throws WebClientResponseException {
+        return testBodyWithBinaryRequestCreation(body);
+    }
     /**
      * 
      * For this test, the body for this request must reference a schema named &#x60;File&#x60;.
@@ -511,10 +671,29 @@ public class FakeApi {
         return testBodyWithFileSchemaRequestCreation(fileSchemaTestClass).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * 
+     * For this test, the body for this request must reference a schema named &#x60;File&#x60;.
+     * <p><b>200</b> - Success
+     * @param fileSchemaTestClass The fileSchemaTestClass parameter
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<Void>> testBodyWithFileSchemaWithHttpInfo(FileSchemaTestClass fileSchemaTestClass) throws WebClientResponseException {
         ParameterizedTypeReference<Void> localVarReturnType = new ParameterizedTypeReference<Void>() {};
         return testBodyWithFileSchemaRequestCreation(fileSchemaTestClass).toEntity(localVarReturnType);
     }
+
+    /**
+     * 
+     * For this test, the body for this request must reference a schema named &#x60;File&#x60;.
+     * <p><b>200</b> - Success
+     * @param fileSchemaTestClass The fileSchemaTestClass parameter
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec testBodyWithFileSchemaWithResponseSpec(FileSchemaTestClass fileSchemaTestClass) throws WebClientResponseException {
+        return testBodyWithFileSchemaRequestCreation(fileSchemaTestClass);
+    }
     /**
      * 
      * 
@@ -569,10 +748,31 @@ public class FakeApi {
         return testBodyWithQueryParamsRequestCreation(query, user).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * 
+     * 
+     * <p><b>200</b> - Success
+     * @param query The query parameter
+     * @param user The user parameter
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<Void>> testBodyWithQueryParamsWithHttpInfo(String query, User user) throws WebClientResponseException {
         ParameterizedTypeReference<Void> localVarReturnType = new ParameterizedTypeReference<Void>() {};
         return testBodyWithQueryParamsRequestCreation(query, user).toEntity(localVarReturnType);
     }
+
+    /**
+     * 
+     * 
+     * <p><b>200</b> - Success
+     * @param query The query parameter
+     * @param user The user parameter
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec testBodyWithQueryParamsWithResponseSpec(String query, User user) throws WebClientResponseException {
+        return testBodyWithQueryParamsRequestCreation(query, user);
+    }
     /**
      * To test \&quot;client\&quot; model
      * To test \&quot;client\&quot; model
@@ -623,10 +823,30 @@ public class FakeApi {
         return testClientModelRequestCreation(client).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * To test \&quot;client\&quot; model
+     * To test \&quot;client\&quot; model
+     * <p><b>200</b> - successful operation
+     * @param client client model
+     * @return ResponseEntity&lt;Client&gt;
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<Client>> testClientModelWithHttpInfo(Client client) throws WebClientResponseException {
         ParameterizedTypeReference<Client> localVarReturnType = new ParameterizedTypeReference<Client>() {};
         return testClientModelRequestCreation(client).toEntity(localVarReturnType);
     }
+
+    /**
+     * To test \&quot;client\&quot; model
+     * To test \&quot;client\&quot; model
+     * <p><b>200</b> - successful operation
+     * @param client client model
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec testClientModelWithResponseSpec(Client client) throws WebClientResponseException {
+        return testClientModelRequestCreation(client);
+    }
     /**
      * Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 
      * Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 
@@ -742,10 +962,57 @@ public class FakeApi {
         return testEndpointParametersRequestCreation(number, _double, patternWithoutDelimiter, _byte, integer, int32, int64, _float, string, binary, date, dateTime, password, paramCallback).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 
+     * Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 
+     * <p><b>400</b> - Invalid username supplied
+     * <p><b>404</b> - User not found
+     * @param number None
+     * @param _double None
+     * @param patternWithoutDelimiter None
+     * @param _byte None
+     * @param integer None
+     * @param int32 None
+     * @param int64 None
+     * @param _float None
+     * @param string None
+     * @param binary None
+     * @param date None
+     * @param dateTime None
+     * @param password None
+     * @param paramCallback None
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<Void>> testEndpointParametersWithHttpInfo(BigDecimal number, Double _double, String patternWithoutDelimiter, byte[] _byte, Integer integer, Integer int32, Long int64, Float _float, String string, File binary, LocalDate date, OffsetDateTime dateTime, String password, String paramCallback) throws WebClientResponseException {
         ParameterizedTypeReference<Void> localVarReturnType = new ParameterizedTypeReference<Void>() {};
         return testEndpointParametersRequestCreation(number, _double, patternWithoutDelimiter, _byte, integer, int32, int64, _float, string, binary, date, dateTime, password, paramCallback).toEntity(localVarReturnType);
     }
+
+    /**
+     * Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 
+     * Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 
+     * <p><b>400</b> - Invalid username supplied
+     * <p><b>404</b> - User not found
+     * @param number None
+     * @param _double None
+     * @param patternWithoutDelimiter None
+     * @param _byte None
+     * @param integer None
+     * @param int32 None
+     * @param int64 None
+     * @param _float None
+     * @param string None
+     * @param binary None
+     * @param date None
+     * @param dateTime None
+     * @param password None
+     * @param paramCallback None
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec testEndpointParametersWithResponseSpec(BigDecimal number, Double _double, String patternWithoutDelimiter, byte[] _byte, Integer integer, Integer int32, Long int64, Float _float, String string, File binary, LocalDate date, OffsetDateTime dateTime, String password, String paramCallback) throws WebClientResponseException {
+        return testEndpointParametersRequestCreation(number, _double, patternWithoutDelimiter, _byte, integer, int32, int64, _float, string, binary, date, dateTime, password, paramCallback);
+    }
     /**
      * To test enum parameters
      * To test enum parameters
@@ -821,10 +1088,47 @@ public class FakeApi {
         return testEnumParametersRequestCreation(enumHeaderStringArray, enumHeaderString, enumQueryStringArray, enumQueryString, enumQueryInteger, enumQueryDouble, enumQueryModelArray, enumFormStringArray, enumFormString).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * To test enum parameters
+     * To test enum parameters
+     * <p><b>400</b> - Invalid request
+     * <p><b>404</b> - Not found
+     * @param enumHeaderStringArray Header parameter enum test (string array)
+     * @param enumHeaderString Header parameter enum test (string)
+     * @param enumQueryStringArray Query parameter enum test (string array)
+     * @param enumQueryString Query parameter enum test (string)
+     * @param enumQueryInteger Query parameter enum test (double)
+     * @param enumQueryDouble Query parameter enum test (double)
+     * @param enumQueryModelArray The enumQueryModelArray parameter
+     * @param enumFormStringArray Form parameter enum test (string array)
+     * @param enumFormString Form parameter enum test (string)
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<Void>> testEnumParametersWithHttpInfo(List<String> enumHeaderStringArray, String enumHeaderString, List<String> enumQueryStringArray, String enumQueryString, Integer enumQueryInteger, Double enumQueryDouble, List<EnumClass> enumQueryModelArray, List<String> enumFormStringArray, String enumFormString) throws WebClientResponseException {
         ParameterizedTypeReference<Void> localVarReturnType = new ParameterizedTypeReference<Void>() {};
         return testEnumParametersRequestCreation(enumHeaderStringArray, enumHeaderString, enumQueryStringArray, enumQueryString, enumQueryInteger, enumQueryDouble, enumQueryModelArray, enumFormStringArray, enumFormString).toEntity(localVarReturnType);
     }
+
+    /**
+     * To test enum parameters
+     * To test enum parameters
+     * <p><b>400</b> - Invalid request
+     * <p><b>404</b> - Not found
+     * @param enumHeaderStringArray Header parameter enum test (string array)
+     * @param enumHeaderString Header parameter enum test (string)
+     * @param enumQueryStringArray Query parameter enum test (string array)
+     * @param enumQueryString Query parameter enum test (string)
+     * @param enumQueryInteger Query parameter enum test (double)
+     * @param enumQueryDouble Query parameter enum test (double)
+     * @param enumQueryModelArray The enumQueryModelArray parameter
+     * @param enumFormStringArray Form parameter enum test (string array)
+     * @param enumFormString Form parameter enum test (string)
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec testEnumParametersWithResponseSpec(List<String> enumHeaderStringArray, String enumHeaderString, List<String> enumQueryStringArray, String enumQueryString, Integer enumQueryInteger, Double enumQueryDouble, List<EnumClass> enumQueryModelArray, List<String> enumFormStringArray, String enumFormString) throws WebClientResponseException {
+        return testEnumParametersRequestCreation(enumHeaderStringArray, enumHeaderString, enumQueryStringArray, enumQueryString, enumQueryInteger, enumQueryDouble, enumQueryModelArray, enumFormStringArray, enumFormString);
+    }
     /**
      * Fake endpoint to test group parameters (optional)
      * Fake endpoint to test group parameters (optional)
@@ -896,10 +1200,39 @@ public class FakeApi {
         return testGroupParametersRequestCreation(requiredStringGroup, requiredBooleanGroup, requiredInt64Group, stringGroup, booleanGroup, int64Group).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * Fake endpoint to test group parameters (optional)
+     * Fake endpoint to test group parameters (optional)
+     * <p><b>400</b> - Someting wrong
+     * @param requiredStringGroup Required String in group parameters
+     * @param requiredBooleanGroup Required Boolean in group parameters
+     * @param requiredInt64Group Required Integer in group parameters
+     * @param stringGroup String in group parameters
+     * @param booleanGroup Boolean in group parameters
+     * @param int64Group Integer in group parameters
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<Void>> testGroupParametersWithHttpInfo(Integer requiredStringGroup, Boolean requiredBooleanGroup, Long requiredInt64Group, Integer stringGroup, Boolean booleanGroup, Long int64Group) throws WebClientResponseException {
         ParameterizedTypeReference<Void> localVarReturnType = new ParameterizedTypeReference<Void>() {};
         return testGroupParametersRequestCreation(requiredStringGroup, requiredBooleanGroup, requiredInt64Group, stringGroup, booleanGroup, int64Group).toEntity(localVarReturnType);
     }
+
+    /**
+     * Fake endpoint to test group parameters (optional)
+     * Fake endpoint to test group parameters (optional)
+     * <p><b>400</b> - Someting wrong
+     * @param requiredStringGroup Required String in group parameters
+     * @param requiredBooleanGroup Required Boolean in group parameters
+     * @param requiredInt64Group Required Integer in group parameters
+     * @param stringGroup String in group parameters
+     * @param booleanGroup Boolean in group parameters
+     * @param int64Group Integer in group parameters
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec testGroupParametersWithResponseSpec(Integer requiredStringGroup, Boolean requiredBooleanGroup, Long requiredInt64Group, Integer stringGroup, Boolean booleanGroup, Long int64Group) throws WebClientResponseException {
+        return testGroupParametersRequestCreation(requiredStringGroup, requiredBooleanGroup, requiredInt64Group, stringGroup, booleanGroup, int64Group);
+    }
     /**
      * test inline additionalProperties
      * 
@@ -946,10 +1279,29 @@ public class FakeApi {
         return testInlineAdditionalPropertiesRequestCreation(requestBody).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * test inline additionalProperties
+     * 
+     * <p><b>200</b> - successful operation
+     * @param requestBody request body
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<Void>> testInlineAdditionalPropertiesWithHttpInfo(Map<String, String> requestBody) throws WebClientResponseException {
         ParameterizedTypeReference<Void> localVarReturnType = new ParameterizedTypeReference<Void>() {};
         return testInlineAdditionalPropertiesRequestCreation(requestBody).toEntity(localVarReturnType);
     }
+
+    /**
+     * test inline additionalProperties
+     * 
+     * <p><b>200</b> - successful operation
+     * @param requestBody request body
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec testInlineAdditionalPropertiesWithResponseSpec(Map<String, String> requestBody) throws WebClientResponseException {
+        return testInlineAdditionalPropertiesRequestCreation(requestBody);
+    }
     /**
      * test json serialization of form data
      * 
@@ -1007,10 +1359,31 @@ public class FakeApi {
         return testJsonFormDataRequestCreation(param, param2).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * test json serialization of form data
+     * 
+     * <p><b>200</b> - successful operation
+     * @param param field1
+     * @param param2 field2
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<Void>> testJsonFormDataWithHttpInfo(String param, String param2) throws WebClientResponseException {
         ParameterizedTypeReference<Void> localVarReturnType = new ParameterizedTypeReference<Void>() {};
         return testJsonFormDataRequestCreation(param, param2).toEntity(localVarReturnType);
     }
+
+    /**
+     * test json serialization of form data
+     * 
+     * <p><b>200</b> - successful operation
+     * @param param field1
+     * @param param2 field2
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec testJsonFormDataWithResponseSpec(String param, String param2) throws WebClientResponseException {
+        return testJsonFormDataRequestCreation(param, param2);
+    }
     /**
      * 
      * To test the collection format in query parameters
@@ -1095,8 +1468,39 @@ public class FakeApi {
         return testQueryParameterCollectionFormatRequestCreation(pipe, ioutil, http, url, context, allowEmpty, language).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * 
+     * To test the collection format in query parameters
+     * <p><b>200</b> - Success
+     * @param pipe The pipe parameter
+     * @param ioutil The ioutil parameter
+     * @param http The http parameter
+     * @param url The url parameter
+     * @param context The context parameter
+     * @param allowEmpty The allowEmpty parameter
+     * @param language The language parameter
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<Void>> testQueryParameterCollectionFormatWithHttpInfo(List<String> pipe, List<String> ioutil, List<String> http, List<String> url, List<String> context, String allowEmpty, Map<String, String> language) throws WebClientResponseException {
         ParameterizedTypeReference<Void> localVarReturnType = new ParameterizedTypeReference<Void>() {};
         return testQueryParameterCollectionFormatRequestCreation(pipe, ioutil, http, url, context, allowEmpty, language).toEntity(localVarReturnType);
     }
+
+    /**
+     * 
+     * To test the collection format in query parameters
+     * <p><b>200</b> - Success
+     * @param pipe The pipe parameter
+     * @param ioutil The ioutil parameter
+     * @param http The http parameter
+     * @param url The url parameter
+     * @param context The context parameter
+     * @param allowEmpty The allowEmpty parameter
+     * @param language The language parameter
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec testQueryParameterCollectionFormatWithResponseSpec(List<String> pipe, List<String> ioutil, List<String> http, List<String> url, List<String> context, String allowEmpty, Map<String, String> language) throws WebClientResponseException {
+        return testQueryParameterCollectionFormatRequestCreation(pipe, ioutil, http, url, context, allowEmpty, language);
+    }
 }

samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java

@@ -96,8 +96,28 @@ public class FakeClassnameTags123Api {
         return testClassnameRequestCreation(client).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * To test class name in snake case
+     * To test class name in snake case
+     * <p><b>200</b> - successful operation
+     * @param client client model
+     * @return ResponseEntity&lt;Client&gt;
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<Client>> testClassnameWithHttpInfo(Client client) throws WebClientResponseException {
         ParameterizedTypeReference<Client> localVarReturnType = new ParameterizedTypeReference<Client>() {};
         return testClassnameRequestCreation(client).toEntity(localVarReturnType);
     }
+
+    /**
+     * To test class name in snake case
+     * To test class name in snake case
+     * <p><b>200</b> - successful operation
+     * @param client client model
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec testClassnameWithResponseSpec(Client client) throws WebClientResponseException {
+        return testClassnameRequestCreation(client);
+    }
 }

samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/api/PetApi.java

@@ -97,10 +97,31 @@ public class PetApi {
         return addPetRequestCreation(pet).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * Add a new pet to the store
+     * 
+     * <p><b>200</b> - Successful operation
+     * <p><b>405</b> - Invalid input
+     * @param pet Pet object that needs to be added to the store
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<Void>> addPetWithHttpInfo(Pet pet) throws WebClientResponseException {
         ParameterizedTypeReference<Void> localVarReturnType = new ParameterizedTypeReference<Void>() {};
         return addPetRequestCreation(pet).toEntity(localVarReturnType);
     }
+
+    /**
+     * Add a new pet to the store
+     * 
+     * <p><b>200</b> - Successful operation
+     * <p><b>405</b> - Invalid input
+     * @param pet Pet object that needs to be added to the store
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec addPetWithResponseSpec(Pet pet) throws WebClientResponseException {
+        return addPetRequestCreation(pet);
+    }
     /**
      * Deletes a pet
      * 
@@ -153,10 +174,33 @@ public class PetApi {
         return deletePetRequestCreation(petId, apiKey).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * Deletes a pet
+     * 
+     * <p><b>200</b> - Successful operation
+     * <p><b>400</b> - Invalid pet value
+     * @param petId Pet id to delete
+     * @param apiKey The apiKey parameter
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<Void>> deletePetWithHttpInfo(Long petId, String apiKey) throws WebClientResponseException {
         ParameterizedTypeReference<Void> localVarReturnType = new ParameterizedTypeReference<Void>() {};
         return deletePetRequestCreation(petId, apiKey).toEntity(localVarReturnType);
     }
+
+    /**
+     * Deletes a pet
+     * 
+     * <p><b>200</b> - Successful operation
+     * <p><b>400</b> - Invalid pet value
+     * @param petId Pet id to delete
+     * @param apiKey The apiKey parameter
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec deletePetWithResponseSpec(Long petId, String apiKey) throws WebClientResponseException {
+        return deletePetRequestCreation(petId, apiKey);
+    }
     /**
      * Finds Pets by status
      * Multiple status values can be provided with comma separated strings
@@ -209,10 +253,32 @@ public class PetApi {
         return findPetsByStatusRequestCreation(status).bodyToFlux(localVarReturnType).collectList().block();
     }
 
+    /**
+     * Finds Pets by status
+     * Multiple status values can be provided with comma separated strings
+     * <p><b>200</b> - successful operation
+     * <p><b>400</b> - Invalid status value
+     * @param status Status values that need to be considered for filter
+     * @return ResponseEntity&lt;List&lt;Pet&gt;&gt;
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public ResponseEntity<List<Pet>> findPetsByStatusWithHttpInfo(List<String> status) throws WebClientResponseException {
         ParameterizedTypeReference<Pet> localVarReturnType = new ParameterizedTypeReference<Pet>() {};
         return findPetsByStatusRequestCreation(status).toEntityList(localVarReturnType).block();
     }
+
+    /**
+     * Finds Pets by status
+     * Multiple status values can be provided with comma separated strings
+     * <p><b>200</b> - successful operation
+     * <p><b>400</b> - Invalid status value
+     * @param status Status values that need to be considered for filter
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec findPetsByStatusWithResponseSpec(List<String> status) throws WebClientResponseException {
+        return findPetsByStatusRequestCreation(status);
+    }
     /**
      * Finds Pets by tags
      * Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
@@ -267,10 +333,32 @@ public class PetApi {
         return findPetsByTagsRequestCreation(tags).bodyToFlux(localVarReturnType).collect(Collectors.toSet()).block();
     }
 
+    /**
+     * Finds Pets by tags
+     * Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
+     * <p><b>200</b> - successful operation
+     * <p><b>400</b> - Invalid tag value
+     * @param tags Tags to filter by
+     * @return ResponseEntity&lt;Set&lt;Pet&gt;&gt;
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public ResponseEntity<List<Pet>> findPetsByTagsWithHttpInfo(Set<String> tags) throws WebClientResponseException {
         ParameterizedTypeReference<Pet> localVarReturnType = new ParameterizedTypeReference<Pet>() {};
         return findPetsByTagsRequestCreation(tags).toEntityList(localVarReturnType).block();
     }
+
+    /**
+     * Finds Pets by tags
+     * Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
+     * <p><b>200</b> - successful operation
+     * <p><b>400</b> - Invalid tag value
+     * @param tags Tags to filter by
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec findPetsByTagsWithResponseSpec(Set<String> tags) throws WebClientResponseException {
+        return findPetsByTagsRequestCreation(tags);
+    }
     /**
      * Find pet by ID
      * Returns a single pet
@@ -325,10 +413,34 @@ public class PetApi {
         return getPetByIdRequestCreation(petId).bodyToMono(localVarReturnType).block();
     }
 
+    /**
+     * Find pet by ID
+     * Returns a single pet
+     * <p><b>200</b> - successful operation
+     * <p><b>400</b> - Invalid ID supplied
+     * <p><b>404</b> - Pet not found
+     * @param petId ID of pet to return
+     * @return ResponseEntity&lt;Pet&gt;
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public ResponseEntity<Pet> getPetByIdWithHttpInfo(Long petId) throws WebClientResponseException {
         ParameterizedTypeReference<Pet> localVarReturnType = new ParameterizedTypeReference<Pet>() {};
         return getPetByIdRequestCreation(petId).toEntity(localVarReturnType).block();
     }
+
+    /**
+     * Find pet by ID
+     * Returns a single pet
+     * <p><b>200</b> - successful operation
+     * <p><b>400</b> - Invalid ID supplied
+     * <p><b>404</b> - Pet not found
+     * @param petId ID of pet to return
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec getPetByIdWithResponseSpec(Long petId) throws WebClientResponseException {
+        return getPetByIdRequestCreation(petId);
+    }
     /**
      * Update an existing pet
      * 
@@ -381,10 +493,35 @@ public class PetApi {
         updatePetRequestCreation(pet).bodyToMono(localVarReturnType).block();
     }
 
+    /**
+     * Update an existing pet
+     * 
+     * <p><b>200</b> - Successful operation
+     * <p><b>400</b> - Invalid ID supplied
+     * <p><b>404</b> - Pet not found
+     * <p><b>405</b> - Validation exception
+     * @param pet Pet object that needs to be added to the store
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public ResponseEntity<Void> updatePetWithHttpInfo(Pet pet) throws WebClientResponseException {
         ParameterizedTypeReference<Void> localVarReturnType = new ParameterizedTypeReference<Void>() {};
         return updatePetRequestCreation(pet).toEntity(localVarReturnType).block();
     }
+
+    /**
+     * Update an existing pet
+     * 
+     * <p><b>200</b> - Successful operation
+     * <p><b>400</b> - Invalid ID supplied
+     * <p><b>404</b> - Pet not found
+     * <p><b>405</b> - Validation exception
+     * @param pet Pet object that needs to be added to the store
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec updatePetWithResponseSpec(Pet pet) throws WebClientResponseException {
+        return updatePetRequestCreation(pet);
+    }
     /**
      * Updates a pet in the store with form data
      * 
@@ -444,10 +581,35 @@ public class PetApi {
         return updatePetWithFormRequestCreation(petId, name, status).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * Updates a pet in the store with form data
+     * 
+     * <p><b>200</b> - Successful operation
+     * <p><b>405</b> - Invalid input
+     * @param petId ID of pet that needs to be updated
+     * @param name Updated name of the pet
+     * @param status Updated status of the pet
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<Void>> updatePetWithFormWithHttpInfo(Long petId, String name, String status) throws WebClientResponseException {
         ParameterizedTypeReference<Void> localVarReturnType = new ParameterizedTypeReference<Void>() {};
         return updatePetWithFormRequestCreation(petId, name, status).toEntity(localVarReturnType);
     }
+
+    /**
+     * Updates a pet in the store with form data
+     * 
+     * <p><b>200</b> - Successful operation
+     * <p><b>405</b> - Invalid input
+     * @param petId ID of pet that needs to be updated
+     * @param name Updated name of the pet
+     * @param status Updated status of the pet
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec updatePetWithFormWithResponseSpec(Long petId, String name, String status) throws WebClientResponseException {
+        return updatePetWithFormRequestCreation(petId, name, status);
+    }
     /**
      * uploads an image
      * 
@@ -509,10 +671,34 @@ public class PetApi {
         return uploadFileRequestCreation(petId, additionalMetadata, _file).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * uploads an image
+     * 
+     * <p><b>200</b> - successful operation
+     * @param petId ID of pet to update
+     * @param additionalMetadata Additional data to pass to server
+     * @param _file file to upload
+     * @return ResponseEntity&lt;ModelApiResponse&gt;
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<ModelApiResponse>> uploadFileWithHttpInfo(Long petId, String additionalMetadata, File _file) throws WebClientResponseException {
         ParameterizedTypeReference<ModelApiResponse> localVarReturnType = new ParameterizedTypeReference<ModelApiResponse>() {};
         return uploadFileRequestCreation(petId, additionalMetadata, _file).toEntity(localVarReturnType);
     }
+
+    /**
+     * uploads an image
+     * 
+     * <p><b>200</b> - successful operation
+     * @param petId ID of pet to update
+     * @param additionalMetadata Additional data to pass to server
+     * @param _file file to upload
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec uploadFileWithResponseSpec(Long petId, String additionalMetadata, File _file) throws WebClientResponseException {
+        return uploadFileRequestCreation(petId, additionalMetadata, _file);
+    }
     /**
      * uploads an image (required)
      * 
@@ -578,8 +764,32 @@ public class PetApi {
         return uploadFileWithRequiredFileRequestCreation(petId, requiredFile, additionalMetadata).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * uploads an image (required)
+     * 
+     * <p><b>200</b> - successful operation
+     * @param petId ID of pet to update
+     * @param requiredFile file to upload
+     * @param additionalMetadata Additional data to pass to server
+     * @return ResponseEntity&lt;ModelApiResponse&gt;
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<ModelApiResponse>> uploadFileWithRequiredFileWithHttpInfo(Long petId, File requiredFile, String additionalMetadata) throws WebClientResponseException {
         ParameterizedTypeReference<ModelApiResponse> localVarReturnType = new ParameterizedTypeReference<ModelApiResponse>() {};
         return uploadFileWithRequiredFileRequestCreation(petId, requiredFile, additionalMetadata).toEntity(localVarReturnType);
     }
+
+    /**
+     * uploads an image (required)
+     * 
+     * <p><b>200</b> - successful operation
+     * @param petId ID of pet to update
+     * @param requiredFile file to upload
+     * @param additionalMetadata Additional data to pass to server
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec uploadFileWithRequiredFileWithResponseSpec(Long petId, File requiredFile, String additionalMetadata) throws WebClientResponseException {
+        return uploadFileWithRequiredFileRequestCreation(petId, requiredFile, additionalMetadata);
+    }
 }

samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/api/StoreApi.java

@@ -94,10 +94,31 @@ public class StoreApi {
         return deleteOrderRequestCreation(orderId).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * Delete purchase order by ID
+     * For valid response try integer IDs with value < 1000. Anything above 1000 or nonintegers will generate API errors
+     * <p><b>400</b> - Invalid ID supplied
+     * <p><b>404</b> - Order not found
+     * @param orderId ID of the order that needs to be deleted
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<Void>> deleteOrderWithHttpInfo(String orderId) throws WebClientResponseException {
         ParameterizedTypeReference<Void> localVarReturnType = new ParameterizedTypeReference<Void>() {};
         return deleteOrderRequestCreation(orderId).toEntity(localVarReturnType);
     }
+
+    /**
+     * Delete purchase order by ID
+     * For valid response try integer IDs with value &lt; 1000. Anything above 1000 or nonintegers will generate API errors
+     * <p><b>400</b> - Invalid ID supplied
+     * <p><b>404</b> - Order not found
+     * @param orderId ID of the order that needs to be deleted
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec deleteOrderWithResponseSpec(String orderId) throws WebClientResponseException {
+        return deleteOrderRequestCreation(orderId);
+    }
     /**
      * Returns pet inventories by status
      * Returns a map of status codes to quantities
@@ -140,10 +161,28 @@ public class StoreApi {
         return getInventoryRequestCreation().bodyToMono(localVarReturnType);
     }
 
+    /**
+     * Returns pet inventories by status
+     * Returns a map of status codes to quantities
+     * <p><b>200</b> - successful operation
+     * @return ResponseEntity&lt;Map&lt;String, Integer&gt;&gt;
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<Map<String, Integer>>> getInventoryWithHttpInfo() throws WebClientResponseException {
         ParameterizedTypeReference<Map<String, Integer>> localVarReturnType = new ParameterizedTypeReference<Map<String, Integer>>() {};
         return getInventoryRequestCreation().toEntity(localVarReturnType);
     }
+
+    /**
+     * Returns pet inventories by status
+     * Returns a map of status codes to quantities
+     * <p><b>200</b> - successful operation
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec getInventoryWithResponseSpec() throws WebClientResponseException {
+        return getInventoryRequestCreation();
+    }
     /**
      * Find purchase order by ID
      * For valid response try integer IDs with value &lt;&#x3D; 5 or &gt; 10. Other values will generated exceptions
@@ -198,10 +237,34 @@ public class StoreApi {
         return getOrderByIdRequestCreation(orderId).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * Find purchase order by ID
+     * For valid response try integer IDs with value &lt;&#x3D; 5 or &gt; 10. Other values will generated exceptions
+     * <p><b>200</b> - successful operation
+     * <p><b>400</b> - Invalid ID supplied
+     * <p><b>404</b> - Order not found
+     * @param orderId ID of pet that needs to be fetched
+     * @return ResponseEntity&lt;Order&gt;
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<Order>> getOrderByIdWithHttpInfo(Long orderId) throws WebClientResponseException {
         ParameterizedTypeReference<Order> localVarReturnType = new ParameterizedTypeReference<Order>() {};
         return getOrderByIdRequestCreation(orderId).toEntity(localVarReturnType);
     }
+
+    /**
+     * Find purchase order by ID
+     * For valid response try integer IDs with value &lt;&#x3D; 5 or &gt; 10. Other values will generated exceptions
+     * <p><b>200</b> - successful operation
+     * <p><b>400</b> - Invalid ID supplied
+     * <p><b>404</b> - Order not found
+     * @param orderId ID of pet that needs to be fetched
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec getOrderByIdWithResponseSpec(Long orderId) throws WebClientResponseException {
+        return getOrderByIdRequestCreation(orderId);
+    }
     /**
      * Place an order for a pet
      * 
@@ -254,8 +317,30 @@ public class StoreApi {
         return placeOrderRequestCreation(order).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * Place an order for a pet
+     * 
+     * <p><b>200</b> - successful operation
+     * <p><b>400</b> - Invalid Order
+     * @param order order placed for purchasing the pet
+     * @return ResponseEntity&lt;Order&gt;
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<Order>> placeOrderWithHttpInfo(Order order) throws WebClientResponseException {
         ParameterizedTypeReference<Order> localVarReturnType = new ParameterizedTypeReference<Order>() {};
         return placeOrderRequestCreation(order).toEntity(localVarReturnType);
     }
+
+    /**
+     * Place an order for a pet
+     * 
+     * <p><b>200</b> - successful operation
+     * <p><b>400</b> - Invalid Order
+     * @param order order placed for purchasing the pet
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec placeOrderWithResponseSpec(Order order) throws WebClientResponseException {
+        return placeOrderRequestCreation(order);
+    }
 }

samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/api/UserApi.java

@@ -93,10 +93,29 @@ public class UserApi {
         return createUserRequestCreation(user).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * Create user
+     * This can only be done by the logged in user.
+     * <p><b>0</b> - successful operation
+     * @param user Created user object
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<Void>> createUserWithHttpInfo(User user) throws WebClientResponseException {
         ParameterizedTypeReference<Void> localVarReturnType = new ParameterizedTypeReference<Void>() {};
         return createUserRequestCreation(user).toEntity(localVarReturnType);
     }
+
+    /**
+     * Create user
+     * This can only be done by the logged in user.
+     * <p><b>0</b> - successful operation
+     * @param user Created user object
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec createUserWithResponseSpec(User user) throws WebClientResponseException {
+        return createUserRequestCreation(user);
+    }
     /**
      * Creates list of users with given input array
      * 
@@ -143,10 +162,29 @@ public class UserApi {
         return createUsersWithArrayInputRequestCreation(user).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * Creates list of users with given input array
+     * 
+     * <p><b>0</b> - successful operation
+     * @param user List of user object
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<Void>> createUsersWithArrayInputWithHttpInfo(List<User> user) throws WebClientResponseException {
         ParameterizedTypeReference<Void> localVarReturnType = new ParameterizedTypeReference<Void>() {};
         return createUsersWithArrayInputRequestCreation(user).toEntity(localVarReturnType);
     }
+
+    /**
+     * Creates list of users with given input array
+     * 
+     * <p><b>0</b> - successful operation
+     * @param user List of user object
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec createUsersWithArrayInputWithResponseSpec(List<User> user) throws WebClientResponseException {
+        return createUsersWithArrayInputRequestCreation(user);
+    }
     /**
      * Creates list of users with given input array
      * 
@@ -193,10 +231,29 @@ public class UserApi {
         return createUsersWithListInputRequestCreation(user).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * Creates list of users with given input array
+     * 
+     * <p><b>0</b> - successful operation
+     * @param user List of user object
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<Void>> createUsersWithListInputWithHttpInfo(List<User> user) throws WebClientResponseException {
         ParameterizedTypeReference<Void> localVarReturnType = new ParameterizedTypeReference<Void>() {};
         return createUsersWithListInputRequestCreation(user).toEntity(localVarReturnType);
     }
+
+    /**
+     * Creates list of users with given input array
+     * 
+     * <p><b>0</b> - successful operation
+     * @param user List of user object
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec createUsersWithListInputWithResponseSpec(List<User> user) throws WebClientResponseException {
+        return createUsersWithListInputRequestCreation(user);
+    }
     /**
      * Delete user
      * This can only be done by the logged in user.
@@ -245,10 +302,31 @@ public class UserApi {
         return deleteUserRequestCreation(username).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * Delete user
+     * This can only be done by the logged in user.
+     * <p><b>400</b> - Invalid username supplied
+     * <p><b>404</b> - User not found
+     * @param username The name that needs to be deleted
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<Void>> deleteUserWithHttpInfo(String username) throws WebClientResponseException {
         ParameterizedTypeReference<Void> localVarReturnType = new ParameterizedTypeReference<Void>() {};
         return deleteUserRequestCreation(username).toEntity(localVarReturnType);
     }
+
+    /**
+     * Delete user
+     * This can only be done by the logged in user.
+     * <p><b>400</b> - Invalid username supplied
+     * <p><b>404</b> - User not found
+     * @param username The name that needs to be deleted
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec deleteUserWithResponseSpec(String username) throws WebClientResponseException {
+        return deleteUserRequestCreation(username);
+    }
     /**
      * Get user by user name
      * 
@@ -303,10 +381,34 @@ public class UserApi {
         return getUserByNameRequestCreation(username).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * Get user by user name
+     * 
+     * <p><b>200</b> - successful operation
+     * <p><b>400</b> - Invalid username supplied
+     * <p><b>404</b> - User not found
+     * @param username The name that needs to be fetched. Use user1 for testing.
+     * @return ResponseEntity&lt;User&gt;
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<User>> getUserByNameWithHttpInfo(String username) throws WebClientResponseException {
         ParameterizedTypeReference<User> localVarReturnType = new ParameterizedTypeReference<User>() {};
         return getUserByNameRequestCreation(username).toEntity(localVarReturnType);
     }
+
+    /**
+     * Get user by user name
+     * 
+     * <p><b>200</b> - successful operation
+     * <p><b>400</b> - Invalid username supplied
+     * <p><b>404</b> - User not found
+     * @param username The name that needs to be fetched. Use user1 for testing.
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec getUserByNameWithResponseSpec(String username) throws WebClientResponseException {
+        return getUserByNameRequestCreation(username);
+    }
     /**
      * Logs user into the system
      * 
@@ -366,10 +468,34 @@ public class UserApi {
         return loginUserRequestCreation(username, password).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * Logs user into the system
+     * 
+     * <p><b>200</b> - successful operation
+     * <p><b>400</b> - Invalid username/password supplied
+     * @param username The user name for login
+     * @param password The password for login in clear text
+     * @return ResponseEntity&lt;String&gt;
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<String>> loginUserWithHttpInfo(String username, String password) throws WebClientResponseException {
         ParameterizedTypeReference<String> localVarReturnType = new ParameterizedTypeReference<String>() {};
         return loginUserRequestCreation(username, password).toEntity(localVarReturnType);
     }
+
+    /**
+     * Logs user into the system
+     * 
+     * <p><b>200</b> - successful operation
+     * <p><b>400</b> - Invalid username/password supplied
+     * @param username The user name for login
+     * @param password The password for login in clear text
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec loginUserWithResponseSpec(String username, String password) throws WebClientResponseException {
+        return loginUserRequestCreation(username, password);
+    }
     /**
      * Logs out current logged in user session
      * 
@@ -408,10 +534,27 @@ public class UserApi {
         return logoutUserRequestCreation().bodyToMono(localVarReturnType);
     }
 
+    /**
+     * Logs out current logged in user session
+     * 
+     * <p><b>0</b> - successful operation
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<Void>> logoutUserWithHttpInfo() throws WebClientResponseException {
         ParameterizedTypeReference<Void> localVarReturnType = new ParameterizedTypeReference<Void>() {};
         return logoutUserRequestCreation().toEntity(localVarReturnType);
     }
+
+    /**
+     * Logs out current logged in user session
+     * 
+     * <p><b>0</b> - successful operation
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec logoutUserWithResponseSpec() throws WebClientResponseException {
+        return logoutUserRequestCreation();
+    }
     /**
      * Updated user
      * This can only be done by the logged in user.
@@ -468,8 +611,31 @@ public class UserApi {
         return updateUserRequestCreation(username, user).bodyToMono(localVarReturnType);
     }
 
+    /**
+     * Updated user
+     * This can only be done by the logged in user.
+     * <p><b>400</b> - Invalid user supplied
+     * <p><b>404</b> - User not found
+     * @param username name that need to be deleted
+     * @param user Updated user object
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
     public Mono<ResponseEntity<Void>> updateUserWithHttpInfo(String username, User user) throws WebClientResponseException {
         ParameterizedTypeReference<Void> localVarReturnType = new ParameterizedTypeReference<Void>() {};
         return updateUserRequestCreation(username, user).toEntity(localVarReturnType);
     }
+
+    /**
+     * Updated user
+     * This can only be done by the logged in user.
+     * <p><b>400</b> - Invalid user supplied
+     * <p><b>404</b> - User not found
+     * @param username name that need to be deleted
+     * @param user Updated user object
+     * @return ResponseSpec
+     * @throws WebClientResponseException if an error occurs while attempting to invoke the API
+     */
+    public ResponseSpec updateUserWithResponseSpec(String username, User user) throws WebClientResponseException {
+        return updateUserRequestCreation(username, user);
+    }
 }