From b9f6fe6b1f431418b82ce3b9d672d6d2c997b6a6 Mon Sep 17 00:00:00 2001
From: DielN <92168571+DielN@users.noreply.github.com>
Date: Tue, 3 Dec 2024 05:02:54 +0100
Subject: [PATCH] [Java] [Microprofile] Add Json-B polymorphism type info
 annotations (#20164)

* [Microprofile] Add Json-B polymorphism annotations

* [Microprofile] Set openApiNullable in configs to false

* [Microprofile] Bump JSON Bind version to 3.0

* [Microprofile] Only apply JSON-B polymorphism for MP 3.0

* Update samples

* [Microprofile] Update documentation/configs for openApiNullable

* Update docs
---
 ...-microprofile-rest-client-3.0-jackson.yaml |    2 +-
 .../java-microprofile-rest-client-3.0.yaml    |    2 +-
 .../java-microprofile-rest-client.yaml        |    2 +-
 docs/generators/groovy.md                     |    2 +-
 docs/generators/java-camel.md                 |    2 +-
 docs/generators/java-helidon-client.md        |    2 +-
 docs/generators/java-helidon-server.md        |    2 +-
 docs/generators/java-inflector.md             |    2 +-
 docs/generators/java-micronaut-client.md      |    2 +-
 docs/generators/java-micronaut-server.md      |    2 +-
 docs/generators/java-microprofile.md          |    2 +-
 docs/generators/java-msf4j.md                 |    2 +-
 docs/generators/java-pkmst.md                 |    2 +-
 docs/generators/java-play-framework.md        |    2 +-
 docs/generators/java-undertow-server.md       |    2 +-
 docs/generators/java-vertx-web.md             |    2 +-
 docs/generators/java-vertx.md                 |    2 +-
 docs/generators/java-wiremock.md              |    2 +-
 docs/generators/java.md                       |    2 +-
 docs/generators/jaxrs-cxf-cdi.md              |    2 +-
 docs/generators/jaxrs-cxf-client.md           |    2 +-
 docs/generators/jaxrs-cxf-extended.md         |    2 +-
 docs/generators/jaxrs-cxf.md                  |    2 +-
 docs/generators/jaxrs-jersey.md               |    2 +-
 docs/generators/jaxrs-resteasy-eap.md         |    2 +-
 docs/generators/jaxrs-resteasy.md             |    2 +-
 docs/generators/jaxrs-spec.md                 |    2 +-
 docs/generators/spring.md                     |    2 +-
 .../languages/AbstractJavaCodegen.java        |    2 +-
 .../codegen/languages/JavaClientCodegen.java  |    7 +
 .../libraries/microprofile/model.mustache     |    7 +-
 .../Java/libraries/microprofile/pojo.mustache |    4 +-
 .../libraries/microprofile/pom_3.0.mustache   |    2 +-
 .../Java/typeInfoAnnotation.mustache          |    6 +
 .../pom.xml                                   |    2 +-
 .../.openapi-generator/FILES                  |   96 +
 .../README.md                                 |    2 +-
 .../docs/AdditionalPropertiesClass.md         |   14 +
 .../docs/AllOfWithSingleRef.md                |   14 +
 .../docs/Animal.md                            |   14 +
 .../docs/AnotherFakeApi.md                    |   75 +
 .../docs/ArrayOfArrayOfNumberOnly.md          |   13 +
 .../docs/ArrayOfNumberOnly.md                 |   13 +
 .../docs/ArrayTest.md                         |   15 +
 .../docs/Capitalization.md                    |   18 +
 .../docs/Cat.md                               |   13 +
 .../docs/Category.md                          |    3 +-
 .../docs/ChildWithNullable.md                 |   13 +
 .../docs/ClassModel.md                        |   14 +
 .../docs/Client.md                            |   13 +
 .../docs/DefaultApi.md                        |   69 +
 .../docs/DeprecatedObject.md                  |   13 +
 .../docs/Dog.md                               |   13 +
 .../docs/EnumArrays.md                        |   32 +
 .../docs/EnumClass.md                         |   15 +
 .../docs/EnumTest.md                          |   58 +
 .../docs/FakeApi.md                           | 1555 +++++++++++++++++
 .../docs/FakeBigDecimalMap200Response.md      |   14 +
 .../docs/FakeClassnameTags123Api.md           |   82 +
 .../docs/FileSchemaTestClass.md               |   14 +
 .../docs/Foo.md                               |   13 +
 .../docs/FooGetDefaultResponse.md             |   13 +
 .../docs/FormatTest.md                        |   28 +
 .../docs/HasOnlyReadOnly.md                   |   14 +
 .../docs/HealthCheckResult.md                 |   14 +
 .../docs/MapTest.md                           |   25 +
 ...dPropertiesAndAdditionalPropertiesClass.md |   15 +
 .../docs/Model200Response.md                  |   15 +
 .../docs/ModelApiResponse.md                  |    1 -
 .../docs/ModelFile.md                         |   14 +
 .../docs/ModelList.md                         |   13 +
 .../docs/ModelReturn.md                       |   14 +
 .../docs/Name.md                              |   17 +
 .../docs/NullableClass.md                     |   24 +
 .../docs/NumberOnly.md                        |   13 +
 .../docs/ObjectWithDeprecatedFields.md        |   16 +
 .../docs/Order.md                             |    1 -
 .../docs/OuterComposite.md                    |   15 +
 .../docs/OuterEnum.md                         |   15 +
 .../docs/OuterEnumDefaultValue.md             |   15 +
 .../docs/OuterEnumInteger.md                  |   15 +
 .../docs/OuterEnumIntegerDefaultValue.md      |   15 +
 .../docs/OuterObjectWithEnumProperty.md       |   13 +
 .../docs/ParentWithNullable.md                |   22 +
 .../docs/Pet.md                               |    3 +-
 .../docs/PetApi.md                            |  126 +-
 .../docs/ReadOnlyFirst.md                     |   14 +
 .../docs/SingleRefType.md                     |   13 +
 .../docs/SpecialModelName.md                  |   13 +
 .../docs/StoreApi.md                          |   14 +-
 .../docs/Tag.md                               |    1 -
 ...lineFreeformAdditionalPropertiesRequest.md |   13 +
 .../docs/User.md                              |    1 -
 .../docs/UserApi.md                           |   74 +-
 .../pom.xml                                   |    4 +-
 .../client/RFC3339DateFormat.java             |    2 +-
 .../client/api/AnotherFakeApi.java            |   54 +
 .../openapitools/client/api/ApiException.java |    2 +-
 .../client/api/ApiExceptionMapper.java        |    2 +-
 .../openapitools/client/api/DefaultApi.java   |   47 +
 .../org/openapitools/client/api/FakeApi.java  |  237 +++
 .../client/api/FakeClassnameTags123Api.java   |   54 +
 .../org/openapitools/client/api/PetApi.java   |   43 +-
 .../org/openapitools/client/api/StoreApi.java |   12 +-
 .../org/openapitools/client/api/UserApi.java  |    4 +-
 .../model/AdditionalPropertiesClass.java      |  143 ++
 .../client/model/AllOfWithSingleRef.java      |  126 ++
 .../org/openapitools/client/model/Animal.java |  138 ++
 .../model/ArrayOfArrayOfNumberOnly.java       |  107 ++
 .../client/model/ArrayOfNumberOnly.java       |  107 ++
 .../openapitools/client/model/ArrayTest.java  |  183 ++
 .../client/model/Capitalization.java          |  248 +++
 .../org/openapitools/client/model/Cat.java    |  105 ++
 .../openapitools/client/model/Category.java   |   11 +-
 .../client/model/ChildWithNullable.java       |  105 ++
 .../openapitools/client/model/ClassModel.java |   98 ++
 .../org/openapitools/client/model/Client.java |   95 +
 .../client/model/DeprecatedObject.java        |   95 +
 .../org/openapitools/client/model/Dog.java    |  105 ++
 .../openapitools/client/model/EnumArrays.java |  200 +++
 .../openapitools/client/model/EnumClass.java  |   58 +
 .../openapitools/client/model/EnumTest.java   |  438 +++++
 .../model/FakeBigDecimalMap200Response.java   |  137 ++
 .../client/model/FileSchemaTestClass.java     |  137 ++
 .../org/openapitools/client/model/Foo.java    |   95 +
 .../client/model/FooGetDefaultResponse.java   |   97 +
 .../openapitools/client/model/FormatTest.java |  566 ++++++
 .../client/model/HasOnlyReadOnly.java         |  112 ++
 .../client/model/HealthCheckResult.java       |   98 ++
 .../openapitools/client/model/MapTest.java    |  251 +++
 ...ropertiesAndAdditionalPropertiesClass.java |  168 ++
 .../client/model/Model200Response.java        |  129 ++
 .../client/model/ModelApiResponse.java        |    5 +-
 .../openapitools/client/model/ModelFile.java  |  102 ++
 .../openapitools/client/model/ModelList.java  |   96 +
 .../client/model/ModelReturn.java             |   99 ++
 .../org/openapitools/client/model/Name.java   |  174 ++
 .../client/model/NullableClass.java           |  480 +++++
 .../openapitools/client/model/NumberOnly.java |   96 +
 .../model/ObjectWithDeprecatedFields.java     |  204 +++
 .../org/openapitools/client/model/Order.java  |    5 +-
 .../client/model/OuterComposite.java          |  156 ++
 .../openapitools/client/model/OuterEnum.java  |   58 +
 .../client/model/OuterEnumDefaultValue.java   |   58 +
 .../client/model/OuterEnumInteger.java        |   58 +
 .../model/OuterEnumIntegerDefaultValue.java   |   58 +
 .../model/OuterObjectWithEnumProperty.java    |   96 +
 .../client/model/ParentWithNullable.java      |  169 ++
 .../org/openapitools/client/model/Pet.java    |   21 +-
 .../client/model/ReadOnlyFirst.java           |  122 ++
 .../client/model/SingleRefType.java           |   56 +
 .../client/model/SpecialModelName.java        |   96 +
 .../org/openapitools/client/model/Tag.java    |    5 +-
 ...neFreeformAdditionalPropertiesRequest.java |   98 ++
 .../org/openapitools/client/model/User.java   |    5 +-
 .../client/api/AnotherFakeApiTest.java        |   65 +
 .../client/api/DefaultApiTest.java            |   60 +
 .../openapitools/client/api/FakeApiTest.java  |  446 +++++
 .../api/FakeClassnameTags123ApiTest.java      |   65 +
 .../model/AdditionalPropertiesClassTest.java  |   57 +
 .../client/model/AllOfWithSingleRefTest.java  |   56 +
 .../openapitools/client/model/AnimalTest.java |   58 +
 .../model/ArrayOfArrayOfNumberOnlyTest.java   |   51 +
 .../client/model/ArrayOfNumberOnlyTest.java   |   51 +
 .../client/model/ArrayTestTest.java           |   67 +
 .../client/model/CapitalizationTest.java      |   87 +
 .../openapitools/client/model/CatTest.java    |   67 +
 .../client/model/CategoryTest.java            |    2 +-
 .../client/model/ChildWithNullableTest.java   |   67 +
 .../client/model/ClassModelTest.java          |   47 +
 .../openapitools/client/model/ClientTest.java |   47 +
 .../client/model/DeprecatedObjectTest.java    |   47 +
 .../openapitools/client/model/DogTest.java    |   67 +
 .../client/model/EnumArraysTest.java          |   58 +
 .../client/model/EnumClassTest.java           |   32 +
 .../client/model/EnumTestTest.java            |  107 ++
 .../FakeBigDecimalMap200ResponseTest.java     |   58 +
 .../client/model/FileSchemaTestClassTest.java |   59 +
 .../model/FooGetDefaultResponseTest.java      |   48 +
 .../openapitools/client/model/FooTest.java    |   47 +
 .../client/model/FormatTestTest.java          |  171 ++
 .../client/model/HasOnlyReadOnlyTest.java     |   55 +
 .../client/model/HealthCheckResultTest.java   |   47 +
 .../client/model/MapTestTest.java             |   73 +
 ...rtiesAndAdditionalPropertiesClassTest.java |   68 +
 .../client/model/Model200ResponseTest.java    |   55 +
 .../client/model/ModelApiResponseTest.java    |    2 +-
 .../client/model/ModelFileTest.java           |   47 +
 .../client/model/ModelListTest.java           |   47 +
 .../client/model/ModelReturnTest.java         |   47 +
 .../openapitools/client/model/NameTest.java   |   71 +
 .../client/model/NullableClassTest.java       |  142 ++
 .../client/model/NumberOnlyTest.java          |   48 +
 .../model/ObjectWithDeprecatedFieldsTest.java |   76 +
 .../openapitools/client/model/OrderTest.java  |    2 +-
 .../client/model/OuterCompositeTest.java      |   64 +
 .../model/OuterEnumDefaultValueTest.java      |   32 +
 .../OuterEnumIntegerDefaultValueTest.java     |   32 +
 .../client/model/OuterEnumIntegerTest.java    |   32 +
 .../client/model/OuterEnumTest.java           |   32 +
 .../OuterObjectWithEnumPropertyTest.java      |   48 +
 .../client/model/ParentWithNullableTest.java  |   58 +
 .../openapitools/client/model/PetTest.java    |    5 +-
 .../client/model/ReadOnlyFirstTest.java       |   55 +
 .../client/model/SingleRefTypeTest.java       |   32 +
 .../client/model/SpecialModelNameTest.java    |   47 +
 .../openapitools/client/model/TagTest.java    |    2 +-
 ...eeformAdditionalPropertiesRequestTest.java |   49 +
 .../openapitools/client/model/UserTest.java   |    2 +-
 .../pom.xml                                   |    2 +-
 .../openapitools/client/model/Category.java   |    4 +
 .../client/model/ModelApiResponse.java        |    4 +
 .../org/openapitools/client/model/Order.java  |    4 +
 .../org/openapitools/client/model/Pet.java    |    4 +
 .../org/openapitools/client/model/Tag.java    |    4 +
 .../org/openapitools/client/model/User.java   |    4 +
 .../.openapi-generator/FILES                  |   96 +
 .../microprofile-rest-client-3.0/README.md    |    2 +-
 .../docs/AdditionalPropertiesClass.md         |   14 +
 .../docs/AllOfWithSingleRef.md                |   14 +
 .../docs/Animal.md                            |   14 +
 .../docs/AnotherFakeApi.md                    |   75 +
 .../docs/ArrayOfArrayOfNumberOnly.md          |   13 +
 .../docs/ArrayOfNumberOnly.md                 |   13 +
 .../docs/ArrayTest.md                         |   15 +
 .../docs/Capitalization.md                    |   18 +
 .../microprofile-rest-client-3.0/docs/Cat.md  |   13 +
 .../docs/Category.md                          |    3 +-
 .../docs/ChildWithNullable.md                 |   13 +
 .../docs/ClassModel.md                        |   14 +
 .../docs/Client.md                            |   13 +
 .../docs/DefaultApi.md                        |   69 +
 .../docs/DeprecatedObject.md                  |   13 +
 .../microprofile-rest-client-3.0/docs/Dog.md  |   13 +
 .../docs/EnumArrays.md                        |   32 +
 .../docs/EnumClass.md                         |   15 +
 .../docs/EnumTest.md                          |   58 +
 .../docs/FakeApi.md                           | 1555 +++++++++++++++++
 .../docs/FakeBigDecimalMap200Response.md      |   14 +
 .../docs/FakeClassnameTags123Api.md           |   82 +
 .../docs/FileSchemaTestClass.md               |   14 +
 .../microprofile-rest-client-3.0/docs/Foo.md  |   13 +
 .../docs/FooGetDefaultResponse.md             |   13 +
 .../docs/FormatTest.md                        |   28 +
 .../docs/HasOnlyReadOnly.md                   |   14 +
 .../docs/HealthCheckResult.md                 |   14 +
 .../docs/MapTest.md                           |   25 +
 ...dPropertiesAndAdditionalPropertiesClass.md |   15 +
 .../docs/Model200Response.md                  |   15 +
 .../docs/ModelApiResponse.md                  |    1 -
 .../docs/ModelFile.md                         |   14 +
 .../docs/ModelList.md                         |   13 +
 .../docs/ModelReturn.md                       |   14 +
 .../microprofile-rest-client-3.0/docs/Name.md |   17 +
 .../docs/NullableClass.md                     |   24 +
 .../docs/NumberOnly.md                        |   13 +
 .../docs/ObjectWithDeprecatedFields.md        |   16 +
 .../docs/Order.md                             |    1 -
 .../docs/OuterComposite.md                    |   15 +
 .../docs/OuterEnum.md                         |   15 +
 .../docs/OuterEnumDefaultValue.md             |   15 +
 .../docs/OuterEnumInteger.md                  |   15 +
 .../docs/OuterEnumIntegerDefaultValue.md      |   15 +
 .../docs/OuterObjectWithEnumProperty.md       |   13 +
 .../docs/ParentWithNullable.md                |   22 +
 .../microprofile-rest-client-3.0/docs/Pet.md  |    3 +-
 .../docs/PetApi.md                            |  126 +-
 .../docs/ReadOnlyFirst.md                     |   14 +
 .../docs/SingleRefType.md                     |   13 +
 .../docs/SpecialModelName.md                  |   13 +
 .../docs/StoreApi.md                          |   14 +-
 .../microprofile-rest-client-3.0/docs/Tag.md  |    1 -
 ...lineFreeformAdditionalPropertiesRequest.md |   13 +
 .../microprofile-rest-client-3.0/docs/User.md |    1 -
 .../docs/UserApi.md                           |   74 +-
 .../java/microprofile-rest-client-3.0/pom.xml |    4 +-
 .../client/api/AnotherFakeApi.java            |   54 +
 .../openapitools/client/api/ApiException.java |    2 +-
 .../client/api/ApiExceptionMapper.java        |    2 +-
 .../openapitools/client/api/DefaultApi.java   |   47 +
 .../org/openapitools/client/api/FakeApi.java  |  237 +++
 .../client/api/FakeClassnameTags123Api.java   |   54 +
 .../org/openapitools/client/api/PetApi.java   |   43 +-
 .../org/openapitools/client/api/StoreApi.java |   12 +-
 .../org/openapitools/client/api/UserApi.java  |    4 +-
 .../model/AdditionalPropertiesClass.java      |  142 ++
 .../client/model/AllOfWithSingleRef.java      |  125 ++
 .../org/openapitools/client/model/Animal.java |  127 ++
 .../model/ArrayOfArrayOfNumberOnly.java       |  111 ++
 .../client/model/ArrayOfNumberOnly.java       |  111 ++
 .../openapitools/client/model/ArrayTest.java  |  177 ++
 .../client/model/Capitalization.java          |  227 +++
 .../org/openapitools/client/model/Cat.java    |  101 ++
 .../openapitools/client/model/Category.java   |   11 +-
 .../client/model/ChildWithNullable.java       |  101 ++
 .../openapitools/client/model/ClassModel.java |  102 ++
 .../org/openapitools/client/model/Client.java |   99 ++
 .../client/model/DeprecatedObject.java        |   99 ++
 .../org/openapitools/client/model/Dog.java    |  101 ++
 .../openapitools/client/model/EnumArrays.java |  219 +++
 .../openapitools/client/model/EnumClass.java  |   80 +
 .../openapitools/client/model/EnumTest.java   |  446 +++++
 .../model/FakeBigDecimalMap200Response.java   |  135 ++
 .../client/model/FileSchemaTestClass.java     |  136 ++
 .../org/openapitools/client/model/Foo.java    |   99 ++
 .../client/model/FooGetDefaultResponse.java   |  100 ++
 .../openapitools/client/model/FormatTest.java |  494 ++++++
 .../client/model/HasOnlyReadOnly.java         |  114 ++
 .../client/model/HealthCheckResult.java       |  102 ++
 .../openapitools/client/model/MapTest.java    |  250 +++
 ...ropertiesAndAdditionalPropertiesClass.java |  162 ++
 .../client/model/Model200Response.java        |  127 ++
 .../client/model/ModelApiResponse.java        |    9 +-
 .../openapitools/client/model/ModelFile.java  |  105 ++
 .../openapitools/client/model/ModelList.java  |   99 ++
 .../client/model/ModelReturn.java             |  102 ++
 .../org/openapitools/client/model/Name.java   |  167 ++
 .../client/model/NullableClass.java           |  430 +++++
 .../openapitools/client/model/NumberOnly.java |  100 ++
 .../model/ObjectWithDeprecatedFields.java     |  193 ++
 .../org/openapitools/client/model/Order.java  |    9 +-
 .../client/model/OuterComposite.java          |  150 ++
 .../openapitools/client/model/OuterEnum.java  |   80 +
 .../client/model/OuterEnumDefaultValue.java   |   80 +
 .../client/model/OuterEnumInteger.java        |   80 +
 .../model/OuterEnumIntegerDefaultValue.java   |   80 +
 .../model/OuterObjectWithEnumProperty.java    |  100 ++
 .../client/model/ParentWithNullable.java      |  168 ++
 .../org/openapitools/client/model/Pet.java    |   23 +-
 .../client/model/ReadOnlyFirst.java           |  123 ++
 .../client/model/SingleRefType.java           |   78 +
 .../client/model/SpecialModelName.java        |   99 ++
 .../org/openapitools/client/model/Tag.java    |    9 +-
 ...neFreeformAdditionalPropertiesRequest.java |  102 ++
 .../org/openapitools/client/model/User.java   |    9 +-
 .../client/api/AnotherFakeApiTest.java        |   65 +
 .../client/api/DefaultApiTest.java            |   60 +
 .../openapitools/client/api/FakeApiTest.java  |  446 +++++
 .../api/FakeClassnameTags123ApiTest.java      |   65 +
 .../model/AdditionalPropertiesClassTest.java  |   52 +
 .../client/model/AllOfWithSingleRefTest.java  |   51 +
 .../openapitools/client/model/AnimalTest.java |   50 +
 .../model/ArrayOfArrayOfNumberOnlyTest.java   |   46 +
 .../client/model/ArrayOfNumberOnlyTest.java   |   46 +
 .../client/model/ArrayTestTest.java           |   62 +
 .../client/model/CapitalizationTest.java      |   82 +
 .../openapitools/client/model/CatTest.java    |   59 +
 .../client/model/CategoryTest.java            |    2 +-
 .../client/model/ChildWithNullableTest.java   |   59 +
 .../client/model/ClassModelTest.java          |   42 +
 .../openapitools/client/model/ClientTest.java |   42 +
 .../client/model/DeprecatedObjectTest.java    |   42 +
 .../openapitools/client/model/DogTest.java    |   59 +
 .../client/model/EnumArraysTest.java          |   53 +
 .../client/model/EnumClassTest.java           |   32 +
 .../client/model/EnumTestTest.java            |  102 ++
 .../FakeBigDecimalMap200ResponseTest.java     |   53 +
 .../client/model/FileSchemaTestClassTest.java |   54 +
 .../model/FooGetDefaultResponseTest.java      |   43 +
 .../openapitools/client/model/FooTest.java    |   42 +
 .../client/model/FormatTestTest.java          |  166 ++
 .../client/model/HasOnlyReadOnlyTest.java     |   50 +
 .../client/model/HealthCheckResultTest.java   |   42 +
 .../client/model/MapTestTest.java             |   68 +
 ...rtiesAndAdditionalPropertiesClassTest.java |   63 +
 .../client/model/Model200ResponseTest.java    |   50 +
 .../client/model/ModelApiResponseTest.java    |    2 +-
 .../client/model/ModelFileTest.java           |   42 +
 .../client/model/ModelListTest.java           |   42 +
 .../client/model/ModelReturnTest.java         |   42 +
 .../openapitools/client/model/NameTest.java   |   66 +
 .../client/model/NullableClassTest.java       |  137 ++
 .../client/model/NumberOnlyTest.java          |   43 +
 .../model/ObjectWithDeprecatedFieldsTest.java |   71 +
 .../openapitools/client/model/OrderTest.java  |    2 +-
 .../client/model/OuterCompositeTest.java      |   59 +
 .../model/OuterEnumDefaultValueTest.java      |   32 +
 .../OuterEnumIntegerDefaultValueTest.java     |   32 +
 .../client/model/OuterEnumIntegerTest.java    |   32 +
 .../client/model/OuterEnumTest.java           |   32 +
 .../OuterObjectWithEnumPropertyTest.java      |   43 +
 .../client/model/ParentWithNullableTest.java  |   50 +
 .../openapitools/client/model/PetTest.java    |    4 +-
 .../client/model/ReadOnlyFirstTest.java       |   50 +
 .../client/model/SingleRefTypeTest.java       |   32 +
 .../client/model/SpecialModelNameTest.java    |   42 +
 .../openapitools/client/model/TagTest.java    |    2 +-
 ...eeformAdditionalPropertiesRequestTest.java |   44 +
 .../openapitools/client/model/UserTest.java   |    2 +-
 .../openapitools/client/model/Category.java   |    1 +
 .../client/model/ModelApiResponse.java        |    1 +
 .../org/openapitools/client/model/Order.java  |    1 +
 .../org/openapitools/client/model/Pet.java    |    1 +
 .../org/openapitools/client/model/Tag.java    |    1 +
 .../org/openapitools/client/model/User.java   |    1 +
 .../org/openapitools/client/model/Cat.java    |    1 +
 .../org/openapitools/client/model/Dog.java    |    1 +
 .../org/openapitools/client/model/Status.java |    1 +
 .../pom.xml                                   |    2 +-
 .../openapitools/client/model/Category.java   |    4 +
 .../client/model/ModelApiResponse.java        |    4 +
 .../org/openapitools/client/model/Order.java  |    4 +
 .../org/openapitools/client/model/Pet.java    |    4 +
 .../org/openapitools/client/model/Tag.java    |    4 +
 .../org/openapitools/client/model/User.java   |    4 +
 .../.openapi-generator/FILES                  |   96 +
 .../java/microprofile-rest-client/README.md   |    2 +-
 .../docs/AdditionalPropertiesClass.md         |   14 +
 .../docs/AllOfWithSingleRef.md                |   14 +
 .../microprofile-rest-client/docs/Animal.md   |   14 +
 .../docs/AnotherFakeApi.md                    |   75 +
 .../docs/ArrayOfArrayOfNumberOnly.md          |   13 +
 .../docs/ArrayOfNumberOnly.md                 |   13 +
 .../docs/ArrayTest.md                         |   15 +
 .../docs/Capitalization.md                    |   18 +
 .../java/microprofile-rest-client/docs/Cat.md |   13 +
 .../microprofile-rest-client/docs/Category.md |    3 +-
 .../docs/ChildWithNullable.md                 |   13 +
 .../docs/ClassModel.md                        |   14 +
 .../microprofile-rest-client/docs/Client.md   |   13 +
 .../docs/DefaultApi.md                        |   69 +
 .../docs/DeprecatedObject.md                  |   13 +
 .../java/microprofile-rest-client/docs/Dog.md |   13 +
 .../docs/EnumArrays.md                        |   32 +
 .../docs/EnumClass.md                         |   15 +
 .../microprofile-rest-client/docs/EnumTest.md |   58 +
 .../microprofile-rest-client/docs/FakeApi.md  | 1555 +++++++++++++++++
 .../docs/FakeBigDecimalMap200Response.md      |   14 +
 .../docs/FakeClassnameTags123Api.md           |   82 +
 .../docs/FileSchemaTestClass.md               |   14 +
 .../java/microprofile-rest-client/docs/Foo.md |   13 +
 .../docs/FooGetDefaultResponse.md             |   13 +
 .../docs/FormatTest.md                        |   28 +
 .../docs/HasOnlyReadOnly.md                   |   14 +
 .../docs/HealthCheckResult.md                 |   14 +
 .../microprofile-rest-client/docs/MapTest.md  |   25 +
 ...dPropertiesAndAdditionalPropertiesClass.md |   15 +
 .../docs/Model200Response.md                  |   15 +
 .../docs/ModelApiResponse.md                  |    1 -
 .../docs/ModelFile.md                         |   14 +
 .../docs/ModelList.md                         |   13 +
 .../docs/ModelReturn.md                       |   14 +
 .../microprofile-rest-client/docs/Name.md     |   17 +
 .../docs/NullableClass.md                     |   24 +
 .../docs/NumberOnly.md                        |   13 +
 .../docs/ObjectWithDeprecatedFields.md        |   16 +
 .../microprofile-rest-client/docs/Order.md    |    1 -
 .../docs/OuterComposite.md                    |   15 +
 .../docs/OuterEnum.md                         |   15 +
 .../docs/OuterEnumDefaultValue.md             |   15 +
 .../docs/OuterEnumInteger.md                  |   15 +
 .../docs/OuterEnumIntegerDefaultValue.md      |   15 +
 .../docs/OuterObjectWithEnumProperty.md       |   13 +
 .../docs/ParentWithNullable.md                |   22 +
 .../java/microprofile-rest-client/docs/Pet.md |    3 +-
 .../microprofile-rest-client/docs/PetApi.md   |  126 +-
 .../docs/ReadOnlyFirst.md                     |   14 +
 .../docs/SingleRefType.md                     |   13 +
 .../docs/SpecialModelName.md                  |   13 +
 .../microprofile-rest-client/docs/StoreApi.md |   14 +-
 .../java/microprofile-rest-client/docs/Tag.md |    1 -
 ...lineFreeformAdditionalPropertiesRequest.md |   13 +
 .../microprofile-rest-client/docs/User.md     |    1 -
 .../microprofile-rest-client/docs/UserApi.md  |   74 +-
 .../java/microprofile-rest-client/pom.xml     |    2 +-
 .../client/api/AnotherFakeApi.java            |   54 +
 .../openapitools/client/api/ApiException.java |    2 +-
 .../client/api/ApiExceptionMapper.java        |    2 +-
 .../openapitools/client/api/DefaultApi.java   |   47 +
 .../org/openapitools/client/api/FakeApi.java  |  237 +++
 .../client/api/FakeClassnameTags123Api.java   |   54 +
 .../org/openapitools/client/api/PetApi.java   |   43 +-
 .../org/openapitools/client/api/StoreApi.java |   12 +-
 .../org/openapitools/client/api/UserApi.java  |    4 +-
 .../model/AdditionalPropertiesClass.java      |  139 ++
 .../client/model/AllOfWithSingleRef.java      |  122 ++
 .../org/openapitools/client/model/Animal.java |  121 ++
 .../model/ArrayOfArrayOfNumberOnly.java       |  108 ++
 .../client/model/ArrayOfNumberOnly.java       |  108 ++
 .../openapitools/client/model/ArrayTest.java  |  174 ++
 .../client/model/Capitalization.java          |  224 +++
 .../org/openapitools/client/model/Cat.java    |   98 ++
 .../openapitools/client/model/Category.java   |    8 +-
 .../client/model/ChildWithNullable.java       |   98 ++
 .../openapitools/client/model/ClassModel.java |   99 ++
 .../org/openapitools/client/model/Client.java |   96 +
 .../client/model/DeprecatedObject.java        |   96 +
 .../org/openapitools/client/model/Dog.java    |   98 ++
 .../openapitools/client/model/EnumArrays.java |  216 +++
 .../openapitools/client/model/EnumClass.java  |   77 +
 .../openapitools/client/model/EnumTest.java   |  443 +++++
 .../model/FakeBigDecimalMap200Response.java   |  132 ++
 .../client/model/FileSchemaTestClass.java     |  133 ++
 .../org/openapitools/client/model/Foo.java    |   96 +
 .../client/model/FooGetDefaultResponse.java   |   97 +
 .../openapitools/client/model/FormatTest.java |  491 ++++++
 .../client/model/HasOnlyReadOnly.java         |  111 ++
 .../client/model/HealthCheckResult.java       |   99 ++
 .../openapitools/client/model/MapTest.java    |  247 +++
 ...ropertiesAndAdditionalPropertiesClass.java |  159 ++
 .../client/model/Model200Response.java        |  124 ++
 .../client/model/ModelApiResponse.java        |    6 +-
 .../openapitools/client/model/ModelFile.java  |  102 ++
 .../openapitools/client/model/ModelList.java  |   96 +
 .../client/model/ModelReturn.java             |   99 ++
 .../org/openapitools/client/model/Name.java   |  164 ++
 .../client/model/NullableClass.java           |  427 +++++
 .../openapitools/client/model/NumberOnly.java |   97 +
 .../model/ObjectWithDeprecatedFields.java     |  190 ++
 .../org/openapitools/client/model/Order.java  |    6 +-
 .../client/model/OuterComposite.java          |  147 ++
 .../openapitools/client/model/OuterEnum.java  |   77 +
 .../client/model/OuterEnumDefaultValue.java   |   77 +
 .../client/model/OuterEnumInteger.java        |   77 +
 .../model/OuterEnumIntegerDefaultValue.java   |   77 +
 .../model/OuterObjectWithEnumProperty.java    |   97 +
 .../client/model/ParentWithNullable.java      |  163 ++
 .../org/openapitools/client/model/Pet.java    |   20 +-
 .../client/model/ReadOnlyFirst.java           |  120 ++
 .../client/model/SingleRefType.java           |   75 +
 .../client/model/SpecialModelName.java        |   96 +
 .../org/openapitools/client/model/Tag.java    |    6 +-
 ...neFreeformAdditionalPropertiesRequest.java |   99 ++
 .../org/openapitools/client/model/User.java   |    6 +-
 .../client/api/AnotherFakeApiTest.java        |   68 +
 .../client/api/DefaultApiTest.java            |   63 +
 .../openapitools/client/api/FakeApiTest.java  |  449 +++++
 .../api/FakeClassnameTags123ApiTest.java      |   68 +
 .../model/AdditionalPropertiesClassTest.java  |   52 +
 .../client/model/AllOfWithSingleRefTest.java  |   51 +
 .../openapitools/client/model/AnimalTest.java |   50 +
 .../model/ArrayOfArrayOfNumberOnlyTest.java   |   46 +
 .../client/model/ArrayOfNumberOnlyTest.java   |   46 +
 .../client/model/ArrayTestTest.java           |   62 +
 .../client/model/CapitalizationTest.java      |   82 +
 .../openapitools/client/model/CatTest.java    |   59 +
 .../client/model/ChildWithNullableTest.java   |   59 +
 .../client/model/ClassModelTest.java          |   42 +
 .../openapitools/client/model/ClientTest.java |   42 +
 .../client/model/DeprecatedObjectTest.java    |   42 +
 .../openapitools/client/model/DogTest.java    |   59 +
 .../client/model/EnumArraysTest.java          |   53 +
 .../client/model/EnumClassTest.java           |   32 +
 .../client/model/EnumTestTest.java            |  102 ++
 .../FakeBigDecimalMap200ResponseTest.java     |   53 +
 .../client/model/FileSchemaTestClassTest.java |   54 +
 .../model/FooGetDefaultResponseTest.java      |   43 +
 .../openapitools/client/model/FooTest.java    |   42 +
 .../client/model/FormatTestTest.java          |  166 ++
 .../client/model/HasOnlyReadOnlyTest.java     |   50 +
 .../client/model/HealthCheckResultTest.java   |   42 +
 .../client/model/MapTestTest.java             |   68 +
 ...rtiesAndAdditionalPropertiesClassTest.java |   63 +
 .../client/model/Model200ResponseTest.java    |   50 +
 .../client/model/ModelFileTest.java           |   42 +
 .../client/model/ModelListTest.java           |   42 +
 .../client/model/ModelReturnTest.java         |   42 +
 .../openapitools/client/model/NameTest.java   |   66 +
 .../client/model/NullableClassTest.java       |  137 ++
 .../client/model/NumberOnlyTest.java          |   43 +
 .../model/ObjectWithDeprecatedFieldsTest.java |   71 +
 .../client/model/OuterCompositeTest.java      |   59 +
 .../model/OuterEnumDefaultValueTest.java      |   32 +
 .../OuterEnumIntegerDefaultValueTest.java     |   32 +
 .../client/model/OuterEnumIntegerTest.java    |   32 +
 .../client/model/OuterEnumTest.java           |   32 +
 .../OuterObjectWithEnumPropertyTest.java      |   43 +
 .../client/model/ParentWithNullableTest.java  |   50 +
 .../client/model/ReadOnlyFirstTest.java       |   50 +
 .../client/model/SingleRefTypeTest.java       |   32 +
 .../client/model/SpecialModelNameTest.java    |   42 +
 ...eeformAdditionalPropertiesRequestTest.java |   44 +
 572 files changed, 38137 insertions(+), 525 deletions(-)
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/AdditionalPropertiesClass.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/AllOfWithSingleRef.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Animal.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/AnotherFakeApi.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ArrayOfArrayOfNumberOnly.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ArrayOfNumberOnly.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ArrayTest.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Capitalization.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Cat.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ChildWithNullable.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ClassModel.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Client.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/DefaultApi.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/DeprecatedObject.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Dog.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/EnumArrays.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/EnumClass.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/EnumTest.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/FakeApi.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/FakeBigDecimalMap200Response.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/FakeClassnameTags123Api.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/FileSchemaTestClass.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Foo.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/FooGetDefaultResponse.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/FormatTest.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/HasOnlyReadOnly.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/HealthCheckResult.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/MapTest.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/MixedPropertiesAndAdditionalPropertiesClass.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Model200Response.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ModelFile.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ModelList.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ModelReturn.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Name.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/NullableClass.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/NumberOnly.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ObjectWithDeprecatedFields.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/OuterComposite.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/OuterEnum.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/OuterEnumDefaultValue.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/OuterEnumInteger.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/OuterEnumIntegerDefaultValue.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/OuterObjectWithEnumProperty.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ParentWithNullable.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ReadOnlyFirst.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/SingleRefType.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/SpecialModelName.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/TestInlineFreeformAdditionalPropertiesRequest.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/AnotherFakeApi.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/DefaultApi.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/FakeApi.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/AdditionalPropertiesClass.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/AllOfWithSingleRef.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Animal.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnly.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ArrayOfNumberOnly.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ArrayTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Capitalization.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Cat.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ChildWithNullable.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ClassModel.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Client.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/DeprecatedObject.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Dog.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/EnumArrays.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/EnumClass.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/EnumTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/FakeBigDecimalMap200Response.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Foo.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/FooGetDefaultResponse.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/FormatTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/HasOnlyReadOnly.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/HealthCheckResult.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/MapTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Model200Response.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ModelFile.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ModelList.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ModelReturn.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Name.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/NullableClass.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/NumberOnly.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ObjectWithDeprecatedFields.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/OuterComposite.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/OuterEnum.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/OuterEnumDefaultValue.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/OuterEnumInteger.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/OuterEnumIntegerDefaultValue.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/OuterObjectWithEnumProperty.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ParentWithNullable.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ReadOnlyFirst.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/SingleRefType.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/SpecialModelName.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/TestInlineFreeformAdditionalPropertiesRequest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/api/AnotherFakeApiTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/api/DefaultApiTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/api/FakeApiTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/api/FakeClassnameTags123ApiTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/AdditionalPropertiesClassTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/AllOfWithSingleRefTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/AnimalTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnlyTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ArrayOfNumberOnlyTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ArrayTestTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/CapitalizationTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/CatTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ChildWithNullableTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ClassModelTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ClientTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/DeprecatedObjectTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/DogTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/EnumArraysTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/EnumClassTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/EnumTestTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/FakeBigDecimalMap200ResponseTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/FileSchemaTestClassTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/FooGetDefaultResponseTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/FooTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/FormatTestTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/HasOnlyReadOnlyTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/HealthCheckResultTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/MapTestTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClassTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/Model200ResponseTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ModelFileTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ModelListTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ModelReturnTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/NameTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/NullableClassTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/NumberOnlyTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ObjectWithDeprecatedFieldsTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/OuterCompositeTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/OuterEnumDefaultValueTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/OuterEnumIntegerDefaultValueTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/OuterEnumIntegerTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/OuterEnumTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/OuterObjectWithEnumPropertyTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ParentWithNullableTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ReadOnlyFirstTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/SingleRefTypeTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/SpecialModelNameTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/TestInlineFreeformAdditionalPropertiesRequestTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/AdditionalPropertiesClass.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/AllOfWithSingleRef.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/Animal.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/AnotherFakeApi.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/ArrayOfArrayOfNumberOnly.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/ArrayOfNumberOnly.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/ArrayTest.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/Capitalization.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/Cat.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/ChildWithNullable.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/ClassModel.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/Client.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/DefaultApi.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/DeprecatedObject.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/Dog.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/EnumArrays.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/EnumClass.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/EnumTest.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/FakeApi.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/FakeBigDecimalMap200Response.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/FakeClassnameTags123Api.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/FileSchemaTestClass.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/Foo.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/FooGetDefaultResponse.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/FormatTest.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/HasOnlyReadOnly.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/HealthCheckResult.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/MapTest.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/MixedPropertiesAndAdditionalPropertiesClass.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/Model200Response.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/ModelFile.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/ModelList.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/ModelReturn.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/Name.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/NullableClass.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/NumberOnly.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/ObjectWithDeprecatedFields.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/OuterComposite.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/OuterEnum.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/OuterEnumDefaultValue.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/OuterEnumInteger.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/OuterEnumIntegerDefaultValue.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/OuterObjectWithEnumProperty.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/ParentWithNullable.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/ReadOnlyFirst.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/SingleRefType.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/SpecialModelName.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/docs/TestInlineFreeformAdditionalPropertiesRequest.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/AnotherFakeApi.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/DefaultApi.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/FakeApi.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/AdditionalPropertiesClass.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/AllOfWithSingleRef.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Animal.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnly.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ArrayOfNumberOnly.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ArrayTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Capitalization.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Cat.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ChildWithNullable.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ClassModel.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Client.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/DeprecatedObject.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Dog.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/EnumArrays.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/EnumClass.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/EnumTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/FakeBigDecimalMap200Response.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Foo.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/FooGetDefaultResponse.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/FormatTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/HasOnlyReadOnly.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/HealthCheckResult.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/MapTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Model200Response.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ModelFile.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ModelList.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ModelReturn.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Name.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/NullableClass.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/NumberOnly.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ObjectWithDeprecatedFields.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/OuterComposite.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/OuterEnum.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/OuterEnumDefaultValue.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/OuterEnumInteger.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/OuterEnumIntegerDefaultValue.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/OuterObjectWithEnumProperty.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ParentWithNullable.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ReadOnlyFirst.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/SingleRefType.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/SpecialModelName.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/TestInlineFreeformAdditionalPropertiesRequest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/api/AnotherFakeApiTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/api/DefaultApiTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/api/FakeApiTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/api/FakeClassnameTags123ApiTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/AdditionalPropertiesClassTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/AllOfWithSingleRefTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/AnimalTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnlyTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ArrayOfNumberOnlyTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ArrayTestTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/CapitalizationTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/CatTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ChildWithNullableTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ClassModelTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ClientTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/DeprecatedObjectTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/DogTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/EnumArraysTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/EnumClassTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/EnumTestTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/FakeBigDecimalMap200ResponseTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/FileSchemaTestClassTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/FooGetDefaultResponseTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/FooTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/FormatTestTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/HasOnlyReadOnlyTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/HealthCheckResultTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/MapTestTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClassTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/Model200ResponseTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ModelFileTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ModelListTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ModelReturnTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/NameTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/NullableClassTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/NumberOnlyTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ObjectWithDeprecatedFieldsTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/OuterCompositeTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/OuterEnumDefaultValueTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/OuterEnumIntegerDefaultValueTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/OuterEnumIntegerTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/OuterEnumTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/OuterObjectWithEnumPropertyTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ParentWithNullableTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ReadOnlyFirstTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/SingleRefTypeTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/SpecialModelNameTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/TestInlineFreeformAdditionalPropertiesRequestTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/AdditionalPropertiesClass.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/AllOfWithSingleRef.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/Animal.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/AnotherFakeApi.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/ArrayOfArrayOfNumberOnly.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/ArrayOfNumberOnly.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/ArrayTest.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/Capitalization.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/Cat.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/ChildWithNullable.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/ClassModel.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/Client.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/DefaultApi.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/DeprecatedObject.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/Dog.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/EnumArrays.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/EnumClass.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/EnumTest.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/FakeApi.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/FakeBigDecimalMap200Response.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/FakeClassnameTags123Api.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/FileSchemaTestClass.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/Foo.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/FooGetDefaultResponse.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/FormatTest.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/HasOnlyReadOnly.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/HealthCheckResult.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/MapTest.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/MixedPropertiesAndAdditionalPropertiesClass.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/Model200Response.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/ModelFile.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/ModelList.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/ModelReturn.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/Name.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/NullableClass.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/NumberOnly.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/ObjectWithDeprecatedFields.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/OuterComposite.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/OuterEnum.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/OuterEnumDefaultValue.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/OuterEnumInteger.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/OuterEnumIntegerDefaultValue.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/OuterObjectWithEnumProperty.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/ParentWithNullable.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/ReadOnlyFirst.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/SingleRefType.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/SpecialModelName.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/docs/TestInlineFreeformAdditionalPropertiesRequest.md
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/AnotherFakeApi.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/DefaultApi.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/FakeApi.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/AdditionalPropertiesClass.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/AllOfWithSingleRef.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Animal.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnly.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ArrayOfNumberOnly.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ArrayTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Capitalization.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Cat.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ChildWithNullable.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ClassModel.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Client.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/DeprecatedObject.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Dog.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/EnumArrays.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/EnumClass.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/EnumTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/FakeBigDecimalMap200Response.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Foo.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/FooGetDefaultResponse.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/FormatTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/HasOnlyReadOnly.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/HealthCheckResult.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/MapTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Model200Response.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ModelFile.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ModelList.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ModelReturn.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Name.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/NullableClass.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/NumberOnly.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ObjectWithDeprecatedFields.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/OuterComposite.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/OuterEnum.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/OuterEnumDefaultValue.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/OuterEnumInteger.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/OuterEnumIntegerDefaultValue.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/OuterObjectWithEnumProperty.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ParentWithNullable.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ReadOnlyFirst.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/SingleRefType.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/SpecialModelName.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/TestInlineFreeformAdditionalPropertiesRequest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/api/AnotherFakeApiTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/api/DefaultApiTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/api/FakeApiTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/api/FakeClassnameTags123ApiTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/AdditionalPropertiesClassTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/AllOfWithSingleRefTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/AnimalTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnlyTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ArrayOfNumberOnlyTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ArrayTestTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/CapitalizationTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/CatTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ChildWithNullableTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ClassModelTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ClientTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/DeprecatedObjectTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/DogTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/EnumArraysTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/EnumClassTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/EnumTestTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/FakeBigDecimalMap200ResponseTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/FileSchemaTestClassTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/FooGetDefaultResponseTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/FooTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/FormatTestTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/HasOnlyReadOnlyTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/HealthCheckResultTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/MapTestTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClassTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/Model200ResponseTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ModelFileTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ModelListTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ModelReturnTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/NameTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/NullableClassTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/NumberOnlyTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ObjectWithDeprecatedFieldsTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/OuterCompositeTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/OuterEnumDefaultValueTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/OuterEnumIntegerDefaultValueTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/OuterEnumIntegerTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/OuterEnumTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/OuterObjectWithEnumPropertyTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ParentWithNullableTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ReadOnlyFirstTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/SingleRefTypeTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/SpecialModelNameTest.java
 create mode 100644 samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/TestInlineFreeformAdditionalPropertiesRequestTest.java

diff --git a/bin/configs/java-microprofile-rest-client-3.0-jackson.yaml b/bin/configs/java-microprofile-rest-client-3.0-jackson.yaml
index 6df972d7728..7ffcc1cdcb8 100644
--- a/bin/configs/java-microprofile-rest-client-3.0-jackson.yaml
+++ b/bin/configs/java-microprofile-rest-client-3.0-jackson.yaml
@@ -1,7 +1,7 @@
 generatorName: java
 outputDir: samples/client/petstore/java/microprofile-rest-client-3.0-jackson
 library: microprofile
-inputSpec: modules/openapi-generator/src/test/resources/3_0/petstore.yaml
+inputSpec: modules/openapi-generator/src/test/resources/3_0/petstore-with-fake-endpoints-models-for-testing.yaml
 templateDir: modules/openapi-generator/src/main/resources/Java
 additionalProperties:
   serializationLibrary: jackson
diff --git a/bin/configs/java-microprofile-rest-client-3.0.yaml b/bin/configs/java-microprofile-rest-client-3.0.yaml
index e0a2c0a3178..0963a49c9d2 100644
--- a/bin/configs/java-microprofile-rest-client-3.0.yaml
+++ b/bin/configs/java-microprofile-rest-client-3.0.yaml
@@ -1,7 +1,7 @@
 generatorName: java
 outputDir: samples/client/petstore/java/microprofile-rest-client-3.0
 library: microprofile
-inputSpec: modules/openapi-generator/src/test/resources/3_0/petstore.yaml
+inputSpec: modules/openapi-generator/src/test/resources/3_0/petstore-with-fake-endpoints-models-for-testing.yaml
 templateDir: modules/openapi-generator/src/main/resources/Java
 additionalProperties:
   artifactId: microprofile-rest-client-3
diff --git a/bin/configs/java-microprofile-rest-client.yaml b/bin/configs/java-microprofile-rest-client.yaml
index 325cebe61ca..26328850db1 100644
--- a/bin/configs/java-microprofile-rest-client.yaml
+++ b/bin/configs/java-microprofile-rest-client.yaml
@@ -1,7 +1,7 @@
 generatorName: java
 outputDir: samples/client/petstore/java/microprofile-rest-client
 library: microprofile
-inputSpec: modules/openapi-generator/src/test/resources/3_0/petstore.yaml
+inputSpec: modules/openapi-generator/src/test/resources/3_0/petstore-with-fake-endpoints-models-for-testing.yaml
 templateDir: modules/openapi-generator/src/main/resources/Java
 additionalProperties:
   artifactId: microprofile-rest-client
diff --git a/docs/generators/groovy.md b/docs/generators/groovy.md
index d1eab74f3fa..2242386b9b4 100644
--- a/docs/generators/groovy.md
+++ b/docs/generators/groovy.md
@@ -52,7 +52,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |licenseName|The name of the license| |Unlicense|
 |licenseUrl|The URL of the license| |http://unlicense.org|
 |modelPackage|package for generated models| |org.openapitools.model|
-|openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
+|openApiNullable|Enable OpenAPI Jackson Nullable library. Not supported by `microprofile` library.| |true|
 |parentArtifactId|parent artifactId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentVersion|parent version in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
diff --git a/docs/generators/java-camel.md b/docs/generators/java-camel.md
index 2ffb19c8859..f6c41195627 100644
--- a/docs/generators/java-camel.md
+++ b/docs/generators/java-camel.md
@@ -72,7 +72,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |licenseName|The name of the license| |Unlicense|
 |licenseUrl|The URL of the license| |http://unlicense.org|
 |modelPackage|package for generated models| |org.openapitools.model|
-|openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
+|openApiNullable|Enable OpenAPI Jackson Nullable library. Not supported by `microprofile` library.| |true|
 |parentArtifactId|parent artifactId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentVersion|parent version in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
diff --git a/docs/generators/java-helidon-client.md b/docs/generators/java-helidon-client.md
index b5e7384f4ec..8891de60a0d 100644
--- a/docs/generators/java-helidon-client.md
+++ b/docs/generators/java-helidon-client.md
@@ -53,7 +53,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |licenseName|The name of the license| |Unlicense|
 |licenseUrl|The URL of the license| |http://unlicense.org|
 |modelPackage|package for generated models| |org.openapitools.client.model|
-|openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
+|openApiNullable|Enable OpenAPI Jackson Nullable library. Not supported by `microprofile` library.| |true|
 |prependFormOrBodyParameters|Add form or body parameters to the beginning of the parameter list.| |false|
 |rootJavaEEPackage|Root package name for Java EE| |Helidon 2.x and earlier: javax; Helidon 3.x and later: jakarta|
 |serializableModel|boolean - toggle &quot;implements Serializable&quot; for generated models| |false|
diff --git a/docs/generators/java-helidon-server.md b/docs/generators/java-helidon-server.md
index 13af83f5213..f46a9eda3f3 100644
--- a/docs/generators/java-helidon-server.md
+++ b/docs/generators/java-helidon-server.md
@@ -53,7 +53,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |licenseName|The name of the license| |Unlicense|
 |licenseUrl|The URL of the license| |http://unlicense.org|
 |modelPackage|package for generated models| |org.openapitools.server.model|
-|openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
+|openApiNullable|Enable OpenAPI Jackson Nullable library. Not supported by `microprofile` library.| |true|
 |performBeanValidation|Perform BeanValidation| |false|
 |prependFormOrBodyParameters|Add form or body parameters to the beginning of the parameter list.| |false|
 |rootJavaEEPackage|Root package name for Java EE| |Helidon 2.x and earlier: javax; Helidon 3.x and later: jakarta|
diff --git a/docs/generators/java-inflector.md b/docs/generators/java-inflector.md
index 6c8c79dfcc3..210db1efcb9 100644
--- a/docs/generators/java-inflector.md
+++ b/docs/generators/java-inflector.md
@@ -54,7 +54,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |licenseName|The name of the license| |Unlicense|
 |licenseUrl|The URL of the license| |http://unlicense.org|
 |modelPackage|package for generated models| |org.openapitools.model|
-|openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
+|openApiNullable|Enable OpenAPI Jackson Nullable library. Not supported by `microprofile` library.| |true|
 |parentArtifactId|parent artifactId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentVersion|parent version in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
diff --git a/docs/generators/java-micronaut-client.md b/docs/generators/java-micronaut-client.md
index 72d32e61225..4640a166ac1 100644
--- a/docs/generators/java-micronaut-client.md
+++ b/docs/generators/java-micronaut-client.md
@@ -66,7 +66,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |licenseUrl|The URL of the license| |http://unlicense.org|
 |micronautVersion|Micronaut version, only &gt;=3.0.0 versions are supported| |3.4.3|
 |modelPackage|package for generated models| |org.openapitools.model|
-|openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
+|openApiNullable|Enable OpenAPI Jackson Nullable library. Not supported by `microprofile` library.| |true|
 |parentArtifactId|parent artifactId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentVersion|parent version in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
diff --git a/docs/generators/java-micronaut-server.md b/docs/generators/java-micronaut-server.md
index 71261b9aa64..4817892b446 100644
--- a/docs/generators/java-micronaut-server.md
+++ b/docs/generators/java-micronaut-server.md
@@ -64,7 +64,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |licenseUrl|The URL of the license| |http://unlicense.org|
 |micronautVersion|Micronaut version, only &gt;=3.0.0 versions are supported| |3.4.3|
 |modelPackage|package for generated models| |org.openapitools.model|
-|openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
+|openApiNullable|Enable OpenAPI Jackson Nullable library. Not supported by `microprofile` library.| |true|
 |parentArtifactId|parent artifactId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentVersion|parent version in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
diff --git a/docs/generators/java-microprofile.md b/docs/generators/java-microprofile.md
index 335e71f9678..11a92e69202 100644
--- a/docs/generators/java-microprofile.md
+++ b/docs/generators/java-microprofile.md
@@ -69,7 +69,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |microprofileMutiny|Whether to use async types for microprofile (currently only Smallrye Mutiny is supported).| |null|
 |microprofileRestClientVersion|Version of MicroProfile Rest Client API.| |null|
 |modelPackage|package for generated models| |org.openapitools.client.model|
-|openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
+|openApiNullable|Enable OpenAPI Jackson Nullable library. Not supported by `microprofile` library.| |true|
 |parcelableModel|Whether to generate models for Android that implement Parcelable with the okhttp-gson library.| |false|
 |parentArtifactId|parent artifactId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
diff --git a/docs/generators/java-msf4j.md b/docs/generators/java-msf4j.md
index e87372b5fa5..7ed5179526b 100644
--- a/docs/generators/java-msf4j.md
+++ b/docs/generators/java-msf4j.md
@@ -56,7 +56,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |licenseName|The name of the license| |Unlicense|
 |licenseUrl|The URL of the license| |http://unlicense.org|
 |modelPackage|package for generated models| |org.openapitools.model|
-|openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
+|openApiNullable|Enable OpenAPI Jackson Nullable library. Not supported by `microprofile` library.| |true|
 |parentArtifactId|parent artifactId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentVersion|parent version in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
diff --git a/docs/generators/java-pkmst.md b/docs/generators/java-pkmst.md
index 6fa61fa2c9d..789e58062ae 100644
--- a/docs/generators/java-pkmst.md
+++ b/docs/generators/java-pkmst.md
@@ -56,7 +56,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |licenseName|The name of the license| |Unlicense|
 |licenseUrl|The URL of the license| |http://unlicense.org|
 |modelPackage|package for generated models| |com.prokarma.pkmst.model|
-|openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
+|openApiNullable|Enable OpenAPI Jackson Nullable library. Not supported by `microprofile` library.| |true|
 |parentArtifactId|parent artifactId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentVersion|parent version in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
diff --git a/docs/generators/java-play-framework.md b/docs/generators/java-play-framework.md
index 20d617d45ee..c14d28f8f10 100644
--- a/docs/generators/java-play-framework.md
+++ b/docs/generators/java-play-framework.md
@@ -58,7 +58,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |licenseName|The name of the license| |Unlicense|
 |licenseUrl|The URL of the license| |http://unlicense.org|
 |modelPackage|package for generated models| |apimodels|
-|openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
+|openApiNullable|Enable OpenAPI Jackson Nullable library. Not supported by `microprofile` library.| |true|
 |parentArtifactId|parent artifactId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentVersion|parent version in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
diff --git a/docs/generators/java-undertow-server.md b/docs/generators/java-undertow-server.md
index 2e02829c2ed..18e29ce40f5 100644
--- a/docs/generators/java-undertow-server.md
+++ b/docs/generators/java-undertow-server.md
@@ -54,7 +54,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |licenseName|The name of the license| |Unlicense|
 |licenseUrl|The URL of the license| |http://unlicense.org|
 |modelPackage|package for generated models| |null|
-|openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
+|openApiNullable|Enable OpenAPI Jackson Nullable library. Not supported by `microprofile` library.| |true|
 |parentArtifactId|parent artifactId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentVersion|parent version in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
diff --git a/docs/generators/java-vertx-web.md b/docs/generators/java-vertx-web.md
index b39dfcaf03f..c95a7e65c6a 100644
--- a/docs/generators/java-vertx-web.md
+++ b/docs/generators/java-vertx-web.md
@@ -54,7 +54,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |licenseName|The name of the license| |Unlicense|
 |licenseUrl|The URL of the license| |http://unlicense.org|
 |modelPackage|package for generated models| |org.openapitools.vertxweb.server.model|
-|openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
+|openApiNullable|Enable OpenAPI Jackson Nullable library. Not supported by `microprofile` library.| |true|
 |parentArtifactId|parent artifactId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentVersion|parent version in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
diff --git a/docs/generators/java-vertx.md b/docs/generators/java-vertx.md
index 9f9024732f2..8093e9fea52 100644
--- a/docs/generators/java-vertx.md
+++ b/docs/generators/java-vertx.md
@@ -54,7 +54,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |licenseName|The name of the license| |Unlicense|
 |licenseUrl|The URL of the license| |http://unlicense.org|
 |modelPackage|package for generated models| |org.openapitools.server.api.model|
-|openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
+|openApiNullable|Enable OpenAPI Jackson Nullable library. Not supported by `microprofile` library.| |true|
 |parentArtifactId|parent artifactId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentVersion|parent version in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
diff --git a/docs/generators/java-wiremock.md b/docs/generators/java-wiremock.md
index b8a0af01f01..c13cd11f5a8 100644
--- a/docs/generators/java-wiremock.md
+++ b/docs/generators/java-wiremock.md
@@ -54,7 +54,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |licenseName|The name of the license| |Unlicense|
 |licenseUrl|The URL of the license| |http://unlicense.org|
 |modelPackage|package for generated models| |null|
-|openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
+|openApiNullable|Enable OpenAPI Jackson Nullable library. Not supported by `microprofile` library.| |true|
 |parentArtifactId|parent artifactId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentVersion|parent version in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
diff --git a/docs/generators/java.md b/docs/generators/java.md
index 96cb5b888bf..184a6d1ca5f 100644
--- a/docs/generators/java.md
+++ b/docs/generators/java.md
@@ -69,7 +69,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |microprofileMutiny|Whether to use async types for microprofile (currently only Smallrye Mutiny is supported).| |null|
 |microprofileRestClientVersion|Version of MicroProfile Rest Client API.| |null|
 |modelPackage|package for generated models| |org.openapitools.client.model|
-|openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
+|openApiNullable|Enable OpenAPI Jackson Nullable library. Not supported by `microprofile` library.| |true|
 |parcelableModel|Whether to generate models for Android that implement Parcelable with the okhttp-gson library.| |false|
 |parentArtifactId|parent artifactId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
diff --git a/docs/generators/jaxrs-cxf-cdi.md b/docs/generators/jaxrs-cxf-cdi.md
index 8029aa638bb..0d8d492cf7a 100644
--- a/docs/generators/jaxrs-cxf-cdi.md
+++ b/docs/generators/jaxrs-cxf-cdi.md
@@ -58,7 +58,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |licenseName|The name of the license| |Unlicense|
 |licenseUrl|The URL of the license| |http://unlicense.org|
 |modelPackage|package for generated models| |org.openapitools.model|
-|openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
+|openApiNullable|Enable OpenAPI Jackson Nullable library. Not supported by `microprofile` library.| |true|
 |openApiSpecFileLocation|Location where the file containing the spec will be generated in the output folder. No file generated when set to null or empty string.| |null|
 |parentArtifactId|parent artifactId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
diff --git a/docs/generators/jaxrs-cxf-client.md b/docs/generators/jaxrs-cxf-client.md
index 395719497aa..29a7923078b 100644
--- a/docs/generators/jaxrs-cxf-client.md
+++ b/docs/generators/jaxrs-cxf-client.md
@@ -54,7 +54,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |licenseName|The name of the license| |Unlicense|
 |licenseUrl|The URL of the license| |http://unlicense.org|
 |modelPackage|package for generated models| |org.openapitools.model|
-|openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
+|openApiNullable|Enable OpenAPI Jackson Nullable library. Not supported by `microprofile` library.| |true|
 |parentArtifactId|parent artifactId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentVersion|parent version in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
diff --git a/docs/generators/jaxrs-cxf-extended.md b/docs/generators/jaxrs-cxf-extended.md
index 4228d9a6bae..34e21c850e2 100644
--- a/docs/generators/jaxrs-cxf-extended.md
+++ b/docs/generators/jaxrs-cxf-extended.md
@@ -62,7 +62,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |licenseUrl|The URL of the license| |http://unlicense.org|
 |loadTestDataFromFile|Load test data from a generated JSON file| |false|
 |modelPackage|package for generated models| |org.openapitools.model|
-|openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
+|openApiNullable|Enable OpenAPI Jackson Nullable library. Not supported by `microprofile` library.| |true|
 |parentArtifactId|parent artifactId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentVersion|parent version in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
diff --git a/docs/generators/jaxrs-cxf.md b/docs/generators/jaxrs-cxf.md
index 633cd757805..ed011e27f2a 100644
--- a/docs/generators/jaxrs-cxf.md
+++ b/docs/generators/jaxrs-cxf.md
@@ -60,7 +60,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |licenseName|The name of the license| |Unlicense|
 |licenseUrl|The URL of the license| |http://unlicense.org|
 |modelPackage|package for generated models| |org.openapitools.model|
-|openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
+|openApiNullable|Enable OpenAPI Jackson Nullable library. Not supported by `microprofile` library.| |true|
 |parentArtifactId|parent artifactId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentVersion|parent version in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
diff --git a/docs/generators/jaxrs-jersey.md b/docs/generators/jaxrs-jersey.md
index 34d402be27d..0e5ac8c87c6 100644
--- a/docs/generators/jaxrs-jersey.md
+++ b/docs/generators/jaxrs-jersey.md
@@ -56,7 +56,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |licenseName|The name of the license| |Unlicense|
 |licenseUrl|The URL of the license| |http://unlicense.org|
 |modelPackage|package for generated models| |org.openapitools.model|
-|openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
+|openApiNullable|Enable OpenAPI Jackson Nullable library. Not supported by `microprofile` library.| |true|
 |parentArtifactId|parent artifactId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentVersion|parent version in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
diff --git a/docs/generators/jaxrs-resteasy-eap.md b/docs/generators/jaxrs-resteasy-eap.md
index 7e75d1b939a..149173bf40a 100644
--- a/docs/generators/jaxrs-resteasy-eap.md
+++ b/docs/generators/jaxrs-resteasy-eap.md
@@ -56,7 +56,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |licenseName|The name of the license| |Unlicense|
 |licenseUrl|The URL of the license| |http://unlicense.org|
 |modelPackage|package for generated models| |org.openapitools.model|
-|openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
+|openApiNullable|Enable OpenAPI Jackson Nullable library. Not supported by `microprofile` library.| |true|
 |parentArtifactId|parent artifactId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentVersion|parent version in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
diff --git a/docs/generators/jaxrs-resteasy.md b/docs/generators/jaxrs-resteasy.md
index 4dfd3e6295a..f4ab7ca6dbb 100644
--- a/docs/generators/jaxrs-resteasy.md
+++ b/docs/generators/jaxrs-resteasy.md
@@ -56,7 +56,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |licenseName|The name of the license| |Unlicense|
 |licenseUrl|The URL of the license| |http://unlicense.org|
 |modelPackage|package for generated models| |org.openapitools.model|
-|openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
+|openApiNullable|Enable OpenAPI Jackson Nullable library. Not supported by `microprofile` library.| |true|
 |parentArtifactId|parent artifactId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentVersion|parent version in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
diff --git a/docs/generators/jaxrs-spec.md b/docs/generators/jaxrs-spec.md
index ccd66e36bb0..36656ae9e00 100644
--- a/docs/generators/jaxrs-spec.md
+++ b/docs/generators/jaxrs-spec.md
@@ -58,7 +58,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |licenseName|The name of the license| |Unlicense|
 |licenseUrl|The URL of the license| |http://unlicense.org|
 |modelPackage|package for generated models| |org.openapitools.model|
-|openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
+|openApiNullable|Enable OpenAPI Jackson Nullable library. Not supported by `microprofile` library.| |true|
 |openApiSpecFileLocation|Location where the file containing the spec will be generated in the output folder. No file generated when set to null or empty string.| |null|
 |parentArtifactId|parent artifactId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
diff --git a/docs/generators/spring.md b/docs/generators/spring.md
index 745517a34ae..ec4a499b39a 100644
--- a/docs/generators/spring.md
+++ b/docs/generators/spring.md
@@ -65,7 +65,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |licenseName|The name of the license| |Unlicense|
 |licenseUrl|The URL of the license| |http://unlicense.org|
 |modelPackage|package for generated models| |org.openapitools.model|
-|openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
+|openApiNullable|Enable OpenAPI Jackson Nullable library. Not supported by `microprofile` library.| |true|
 |parentArtifactId|parent artifactId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentVersion|parent version in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractJavaCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractJavaCodegen.java
index 7f10686ae7e..399134bfcd6 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractJavaCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractJavaCodegen.java
@@ -326,7 +326,7 @@ public abstract class AbstractJavaCodegen extends DefaultCodegen implements Code
         cliOptions.add(CliOption.newString(ADDITIONAL_ENUM_TYPE_ANNOTATIONS, "Additional annotations for enum type(class level annotations)"));
         cliOptions.add(CliOption.newString(ADDITIONAL_MODEL_TYPE_ANNOTATIONS, "Additional annotations for model type(class level annotations). List separated by semicolon(;) or new line (Linux or Windows)"));
         cliOptions.add(CliOption.newString(ADDITIONAL_ONE_OF_TYPE_ANNOTATIONS, "Additional annotations for oneOf interfaces(class level annotations). List separated by semicolon(;) or new line (Linux or Windows)"));
-        cliOptions.add(CliOption.newBoolean(OPENAPI_NULLABLE, "Enable OpenAPI Jackson Nullable library", this.openApiNullable));
+        cliOptions.add(CliOption.newBoolean(OPENAPI_NULLABLE, "Enable OpenAPI Jackson Nullable library. Not supported by `microprofile` library.", this.openApiNullable));
         cliOptions.add(CliOption.newBoolean(IMPLICIT_HEADERS, "Skip header parameters in the generated API methods using @ApiImplicitParams annotation.", implicitHeaders));
         cliOptions.add(CliOption.newString(IMPLICIT_HEADERS_REGEX, "Skip header parameters that matches given regex in the generated API methods using @ApiImplicitParams annotation. Note: this parameter is ignored when implicitHeaders=true"));
         cliOptions.add(CliOption.newBoolean(CAMEL_CASE_DOLLAR_SIGN, "Fix camelCase when starting with $ sign. when true : $Value when false : $value"));
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaClientCodegen.java
index 8239da1fd6b..45b62581f15 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaClientCodegen.java
@@ -628,6 +628,10 @@ public class JavaClientCodegen extends AbstractJavaCodegen
                 forceSerializationLibrary(SERIALIZATION_LIBRARY_JSONB);
             }
 
+            // currently not supported for Microprofile (neither for Jackson nor JSON-B)
+            openApiNullable = false;
+            additionalProperties.put(OPENAPI_NULLABLE, false);
+
             if (microprofileFramework.equals(MICROPROFILE_KUMULUZEE)) {
                 supportingFiles.add(new SupportingFile("kumuluzee.pom.mustache", "", "pom.xml"));
                 supportingFiles.add(new SupportingFile("kumuluzee.config.yaml.mustache", "src/main/resources", "config.yaml"));
@@ -636,6 +640,9 @@ public class JavaClientCodegen extends AbstractJavaCodegen
 
             if ("3.0".equals(microprofileRestClientVersion)) {
                 additionalProperties.put("microprofile3", true);
+                if (getSerializationLibrary().equals(SERIALIZATION_LIBRARY_JSONB)) {
+                    additionalProperties.put("jsonbPolymorphism", true);
+                }
             }
         } else if (APACHE.equals(getLibrary())) {
             forceSerializationLibrary(SERIALIZATION_LIBRARY_JACKSON);
diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/microprofile/model.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/microprofile/model.mustache
index 2444f0eb46e..8ac93be1b00 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/microprofile/model.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/microprofile/model.mustache
@@ -37,9 +37,12 @@ import {{rootJavaEEPackage}}.json.bind.serializer.SerializationContext;
 import {{rootJavaEEPackage}}.json.stream.JsonGenerator;
 import {{rootJavaEEPackage}}.json.stream.JsonParser;
 import {{rootJavaEEPackage}}.json.bind.annotation.JsonbProperty;
-{{#vendorExtensions.x-has-readonly-properties}}
+{{#jsonbPolymorphism}}
+import {{rootJavaEEPackage}}.json.bind.annotation.JsonbSubtype;
+import {{rootJavaEEPackage}}.json.bind.annotation.JsonbTransient;
+import {{rootJavaEEPackage}}.json.bind.annotation.JsonbTypeInfo;
+{{/jsonbPolymorphism}}
 import {{rootJavaEEPackage}}.json.bind.annotation.JsonbCreator;
-{{/vendorExtensions.x-has-readonly-properties}}
 {{/jsonb}}
 {{#useBeanValidation}}
 import {{rootJavaEEPackage}}.validation.constraints.*;
diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/microprofile/pojo.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/microprofile/pojo.mustache
index 10ffbcf6c76..9fcac409cb6 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/microprofile/pojo.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/microprofile/pojo.mustache
@@ -22,7 +22,7 @@
   * {{{.}}}
   */
 {{/description}}
-{{>additionalModelTypeAnnotations}}
+{{>additionalModelTypeAnnotations}}{{#discriminator}}{{>typeInfoAnnotation}}{{/discriminator}}
 {{#vendorExtensions.x-class-extra-annotation}}
 {{{vendorExtensions.x-class-extra-annotation}}}
 {{/vendorExtensions.x-class-extra-annotation}}
@@ -45,7 +45,7 @@ public class {{classname}} {{#parent}}extends {{{.}}}{{/parent}}{{#vendorExtensi
   */
 {{/description}}
   {{^withXml}}
-  {{#jsonb}}@JsonbProperty("{{baseName}}"){{/jsonb}}
+  {{#jsonb}}{{^isDiscriminator}}@JsonbProperty("{{baseName}}"){{/isDiscriminator}}{{#isDiscriminator}}{{#jsonbPolymorphism}}@JsonbTransient{{/jsonbPolymorphism}}{{^jsonbPolymorphism}}@JsonbProperty("{{baseName}}"){{/jsonbPolymorphism}}{{/isDiscriminator}}{{/jsonb}}
   {{/withXml}}
 {{#vendorExtensions.x-field-extra-annotation}}
 {{{vendorExtensions.x-field-extra-annotation}}}
diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/microprofile/pom_3.0.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/microprofile/pom_3.0.mustache
index c09c296b42c..e4ab3b15ec8 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/microprofile/pom_3.0.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/microprofile/pom_3.0.mustache
@@ -234,7 +234,7 @@
 {{/jackson}}
     <jakarta.activation.version>2.1.0</jakarta.activation.version>
     <jakarta.annotation.version>2.0.0</jakarta.annotation.version>
-    <jakarta.json.bind.version>2.0.0</jakarta.json.bind.version>
+    <jakarta.json.bind.version>3.0.0</jakarta.json.bind.version>
     <jakarta.json.version>2.0.1</jakarta.json.version>
     <jakarta.ws.rs.version>3.0.0</jakarta.ws.rs.version>
     <jakarta.xml.bind.version>3.0.1</jakarta.xml.bind.version>
diff --git a/modules/openapi-generator/src/main/resources/Java/typeInfoAnnotation.mustache b/modules/openapi-generator/src/main/resources/Java/typeInfoAnnotation.mustache
index c833321ebfa..58bfed9c45b 100644
--- a/modules/openapi-generator/src/main/resources/Java/typeInfoAnnotation.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/typeInfoAnnotation.mustache
@@ -15,3 +15,9 @@
 {{/-last}}
 {{/discriminator.mappedModels}}
 {{/jackson}}
+{{#jsonbPolymorphism}}
+@JsonbTypeInfo(key = "{{{discriminator.propertyBaseName}}}"{{#discriminator.mappedModels}}{{#-first}}, value = {
+{{/-first}}
+  @JsonbSubtype(alias = "{{^vendorExtensions.x-discriminator-value}}{{mappingName}}{{/vendorExtensions.x-discriminator-value}}{{#vendorExtensions.x-discriminator-value}}{{{vendorExtensions.x-discriminator-value}}}{{/vendorExtensions.x-discriminator-value}}", type = {{modelName}}.class),
+{{#-last}}
+}{{/-last}}{{/discriminator.mappedModels}}){{/jsonbPolymorphism}}
\ No newline at end of file
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson-with-xml/pom.xml b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson-with-xml/pom.xml
index d53697eb8f7..a6a61b273cb 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson-with-xml/pom.xml
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson-with-xml/pom.xml
@@ -163,7 +163,7 @@
     <jackson.version>2.17.1</jackson.version>
     <jakarta.activation.version>2.1.0</jakarta.activation.version>
     <jakarta.annotation.version>2.0.0</jakarta.annotation.version>
-    <jakarta.json.bind.version>2.0.0</jakarta.json.bind.version>
+    <jakarta.json.bind.version>3.0.0</jakarta.json.bind.version>
     <jakarta.json.version>2.0.1</jakarta.json.version>
     <jakarta.ws.rs.version>3.0.0</jakarta.ws.rs.version>
     <jakarta.xml.bind.version>3.0.1</jakarta.xml.bind.version>
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/.openapi-generator/FILES b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/.openapi-generator/FILES
index 6943768893b..719f590596a 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/.openapi-generator/FILES
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/.openapi-generator/FILES
@@ -1,23 +1,119 @@
 README.md
+docs/AdditionalPropertiesClass.md
+docs/AllOfWithSingleRef.md
+docs/Animal.md
+docs/AnotherFakeApi.md
+docs/ArrayOfArrayOfNumberOnly.md
+docs/ArrayOfNumberOnly.md
+docs/ArrayTest.md
+docs/Capitalization.md
+docs/Cat.md
 docs/Category.md
+docs/ChildWithNullable.md
+docs/ClassModel.md
+docs/Client.md
+docs/DefaultApi.md
+docs/DeprecatedObject.md
+docs/Dog.md
+docs/EnumArrays.md
+docs/EnumClass.md
+docs/EnumTest.md
+docs/FakeApi.md
+docs/FakeBigDecimalMap200Response.md
+docs/FakeClassnameTags123Api.md
+docs/FileSchemaTestClass.md
+docs/Foo.md
+docs/FooGetDefaultResponse.md
+docs/FormatTest.md
+docs/HasOnlyReadOnly.md
+docs/HealthCheckResult.md
+docs/MapTest.md
+docs/MixedPropertiesAndAdditionalPropertiesClass.md
+docs/Model200Response.md
 docs/ModelApiResponse.md
+docs/ModelFile.md
+docs/ModelList.md
+docs/ModelReturn.md
+docs/Name.md
+docs/NullableClass.md
+docs/NumberOnly.md
+docs/ObjectWithDeprecatedFields.md
 docs/Order.md
+docs/OuterComposite.md
+docs/OuterEnum.md
+docs/OuterEnumDefaultValue.md
+docs/OuterEnumInteger.md
+docs/OuterEnumIntegerDefaultValue.md
+docs/OuterObjectWithEnumProperty.md
+docs/ParentWithNullable.md
 docs/Pet.md
 docs/PetApi.md
+docs/ReadOnlyFirst.md
+docs/SingleRefType.md
+docs/SpecialModelName.md
 docs/StoreApi.md
 docs/Tag.md
+docs/TestInlineFreeformAdditionalPropertiesRequest.md
 docs/User.md
 docs/UserApi.md
 pom.xml
 src/main/java/org/openapitools/client/RFC3339DateFormat.java
+src/main/java/org/openapitools/client/api/AnotherFakeApi.java
 src/main/java/org/openapitools/client/api/ApiException.java
 src/main/java/org/openapitools/client/api/ApiExceptionMapper.java
+src/main/java/org/openapitools/client/api/DefaultApi.java
+src/main/java/org/openapitools/client/api/FakeApi.java
+src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
 src/main/java/org/openapitools/client/api/PetApi.java
 src/main/java/org/openapitools/client/api/StoreApi.java
 src/main/java/org/openapitools/client/api/UserApi.java
+src/main/java/org/openapitools/client/model/AdditionalPropertiesClass.java
+src/main/java/org/openapitools/client/model/AllOfWithSingleRef.java
+src/main/java/org/openapitools/client/model/Animal.java
+src/main/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnly.java
+src/main/java/org/openapitools/client/model/ArrayOfNumberOnly.java
+src/main/java/org/openapitools/client/model/ArrayTest.java
+src/main/java/org/openapitools/client/model/Capitalization.java
+src/main/java/org/openapitools/client/model/Cat.java
 src/main/java/org/openapitools/client/model/Category.java
+src/main/java/org/openapitools/client/model/ChildWithNullable.java
+src/main/java/org/openapitools/client/model/ClassModel.java
+src/main/java/org/openapitools/client/model/Client.java
+src/main/java/org/openapitools/client/model/DeprecatedObject.java
+src/main/java/org/openapitools/client/model/Dog.java
+src/main/java/org/openapitools/client/model/EnumArrays.java
+src/main/java/org/openapitools/client/model/EnumClass.java
+src/main/java/org/openapitools/client/model/EnumTest.java
+src/main/java/org/openapitools/client/model/FakeBigDecimalMap200Response.java
+src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
+src/main/java/org/openapitools/client/model/Foo.java
+src/main/java/org/openapitools/client/model/FooGetDefaultResponse.java
+src/main/java/org/openapitools/client/model/FormatTest.java
+src/main/java/org/openapitools/client/model/HasOnlyReadOnly.java
+src/main/java/org/openapitools/client/model/HealthCheckResult.java
+src/main/java/org/openapitools/client/model/MapTest.java
+src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
+src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelFile.java
+src/main/java/org/openapitools/client/model/ModelList.java
+src/main/java/org/openapitools/client/model/ModelReturn.java
+src/main/java/org/openapitools/client/model/Name.java
+src/main/java/org/openapitools/client/model/NullableClass.java
+src/main/java/org/openapitools/client/model/NumberOnly.java
+src/main/java/org/openapitools/client/model/ObjectWithDeprecatedFields.java
 src/main/java/org/openapitools/client/model/Order.java
+src/main/java/org/openapitools/client/model/OuterComposite.java
+src/main/java/org/openapitools/client/model/OuterEnum.java
+src/main/java/org/openapitools/client/model/OuterEnumDefaultValue.java
+src/main/java/org/openapitools/client/model/OuterEnumInteger.java
+src/main/java/org/openapitools/client/model/OuterEnumIntegerDefaultValue.java
+src/main/java/org/openapitools/client/model/OuterObjectWithEnumProperty.java
+src/main/java/org/openapitools/client/model/ParentWithNullable.java
 src/main/java/org/openapitools/client/model/Pet.java
+src/main/java/org/openapitools/client/model/ReadOnlyFirst.java
+src/main/java/org/openapitools/client/model/SingleRefType.java
+src/main/java/org/openapitools/client/model/SpecialModelName.java
 src/main/java/org/openapitools/client/model/Tag.java
+src/main/java/org/openapitools/client/model/TestInlineFreeformAdditionalPropertiesRequest.java
 src/main/java/org/openapitools/client/model/User.java
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/README.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/README.md
index 4c3e40a34b5..1cb83709623 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/README.md
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/README.md
@@ -1,6 +1,6 @@
 # OpenAPI Petstore - MicroProfile Rest Client & MicroProfile Server
 
-This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
 
 ## Overview
 This API client was generated by the [OpenAPI Generator](https://openapi-generator.tech) project.
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/AdditionalPropertiesClass.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/AdditionalPropertiesClass.md
new file mode 100644
index 00000000000..fe69a56eebf
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/AdditionalPropertiesClass.md
@@ -0,0 +1,14 @@
+
+
+# AdditionalPropertiesClass
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**mapProperty** | **Map&lt;String, String&gt;** |  |  [optional] |
+|**mapOfMapProperty** | **Map&lt;String, Map&lt;String, String&gt;&gt;** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/AllOfWithSingleRef.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/AllOfWithSingleRef.md
new file mode 100644
index 00000000000..4146d56a372
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/AllOfWithSingleRef.md
@@ -0,0 +1,14 @@
+
+
+# AllOfWithSingleRef
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**username** | **String** |  |  [optional] |
+|**singleRefType** | **SingleRefType** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Animal.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Animal.md
new file mode 100644
index 00000000000..d9b32f14c88
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Animal.md
@@ -0,0 +1,14 @@
+
+
+# Animal
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**className** | **String** |  |  |
+|**color** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/AnotherFakeApi.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/AnotherFakeApi.md
new file mode 100644
index 00000000000..73c966d2d54
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/AnotherFakeApi.md
@@ -0,0 +1,75 @@
+# AnotherFakeApi
+
+All URIs are relative to *http://petstore.swagger.io:80/v2*
+
+| Method | HTTP request | Description |
+|------------- | ------------- | -------------|
+| [**call123testSpecialTags**](AnotherFakeApi.md#call123testSpecialTags) | **PATCH** /another-fake/dummy | To test special tags |
+
+
+
+## call123testSpecialTags
+
+> Client call123testSpecialTags(client)
+
+To test special tags
+
+To test special tags and operation ID starting with number
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.AnotherFakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        AnotherFakeApi apiInstance = new AnotherFakeApi(defaultClient);
+        Client client = new Client(); // Client | client model
+        try {
+            Client result = apiInstance.call123testSpecialTags(client);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling AnotherFakeApi#call123testSpecialTags");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **client** | [**Client**](Client.md)| client model | |
+
+### Return type
+
+[**Client**](Client.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: application/json
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ArrayOfArrayOfNumberOnly.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ArrayOfArrayOfNumberOnly.md
new file mode 100644
index 00000000000..0188db3eb13
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ArrayOfArrayOfNumberOnly.md
@@ -0,0 +1,13 @@
+
+
+# ArrayOfArrayOfNumberOnly
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**arrayArrayNumber** | **List&lt;List&lt;BigDecimal&gt;&gt;** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ArrayOfNumberOnly.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ArrayOfNumberOnly.md
new file mode 100644
index 00000000000..a5753530aad
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ArrayOfNumberOnly.md
@@ -0,0 +1,13 @@
+
+
+# ArrayOfNumberOnly
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**arrayNumber** | **List&lt;BigDecimal&gt;** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ArrayTest.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ArrayTest.md
new file mode 100644
index 00000000000..36077c9df30
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ArrayTest.md
@@ -0,0 +1,15 @@
+
+
+# ArrayTest
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**arrayOfString** | **List&lt;String&gt;** |  |  [optional] |
+|**arrayArrayOfInteger** | **List&lt;List&lt;Long&gt;&gt;** |  |  [optional] |
+|**arrayArrayOfModel** | **List&lt;List&lt;ReadOnlyFirst&gt;&gt;** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Capitalization.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Capitalization.md
new file mode 100644
index 00000000000..82a812711de
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Capitalization.md
@@ -0,0 +1,18 @@
+
+
+# Capitalization
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**smallCamel** | **String** |  |  [optional] |
+|**capitalCamel** | **String** |  |  [optional] |
+|**smallSnake** | **String** |  |  [optional] |
+|**capitalSnake** | **String** |  |  [optional] |
+|**scAETHFlowPoints** | **String** |  |  [optional] |
+|**ATT_NAME** | **String** | Name of the pet  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Cat.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Cat.md
new file mode 100644
index 00000000000..390dd519c8c
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Cat.md
@@ -0,0 +1,13 @@
+
+
+# Cat
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**declawed** | **Boolean** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Category.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Category.md
index a7fc939d252..ab6d1ec334d 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Category.md
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Category.md
@@ -2,14 +2,13 @@
 
 # Category
 
-A category for a pet
 
 ## Properties
 
 | Name | Type | Description | Notes |
 |------------ | ------------- | ------------- | -------------|
 |**id** | **Long** |  |  [optional] |
-|**name** | **String** |  |  [optional] |
+|**name** | **String** |  |  |
 
 
 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ChildWithNullable.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ChildWithNullable.md
new file mode 100644
index 00000000000..73c0dd6d473
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ChildWithNullable.md
@@ -0,0 +1,13 @@
+
+
+# ChildWithNullable
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**otherProperty** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ClassModel.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ClassModel.md
new file mode 100644
index 00000000000..af46dea1f6c
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ClassModel.md
@@ -0,0 +1,14 @@
+
+
+# ClassModel
+
+Model for testing model with \"_class\" property
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**propertyClass** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Client.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Client.md
new file mode 100644
index 00000000000..ef07b4ab8b9
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Client.md
@@ -0,0 +1,13 @@
+
+
+# Client
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**client** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/DefaultApi.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/DefaultApi.md
new file mode 100644
index 00000000000..3b2c1dbda17
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/DefaultApi.md
@@ -0,0 +1,69 @@
+# DefaultApi
+
+All URIs are relative to *http://petstore.swagger.io:80/v2*
+
+| Method | HTTP request | Description |
+|------------- | ------------- | -------------|
+| [**fooGet**](DefaultApi.md#fooGet) | **GET** /foo |  |
+
+
+
+## fooGet
+
+> FooGetDefaultResponse fooGet()
+
+
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.DefaultApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        DefaultApi apiInstance = new DefaultApi(defaultClient);
+        try {
+            FooGetDefaultResponse result = apiInstance.fooGet();
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling DefaultApi#fooGet");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+This endpoint does not need any parameter.
+
+### Return type
+
+[**FooGetDefaultResponse**](FooGetDefaultResponse.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: Not defined
+- **Accept**: application/json
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | response |  -  |
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/DeprecatedObject.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/DeprecatedObject.md
new file mode 100644
index 00000000000..48de1d62442
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/DeprecatedObject.md
@@ -0,0 +1,13 @@
+
+
+# DeprecatedObject
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**name** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Dog.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Dog.md
new file mode 100644
index 00000000000..972c981c0d0
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Dog.md
@@ -0,0 +1,13 @@
+
+
+# Dog
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**breed** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/EnumArrays.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/EnumArrays.md
new file mode 100644
index 00000000000..b2222d5beb2
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/EnumArrays.md
@@ -0,0 +1,32 @@
+
+
+# EnumArrays
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**justSymbol** | [**JustSymbolEnum**](#JustSymbolEnum) |  |  [optional] |
+|**arrayEnum** | [**List&lt;ArrayEnumEnum&gt;**](#List&lt;ArrayEnumEnum&gt;) |  |  [optional] |
+
+
+
+## Enum: JustSymbolEnum
+
+| Name | Value |
+|---- | -----|
+| GREATER_THAN_OR_EQUAL_TO | &quot;&gt;&#x3D;&quot; |
+| DOLLAR | &quot;$&quot; |
+
+
+
+## Enum: List&lt;ArrayEnumEnum&gt;
+
+| Name | Value |
+|---- | -----|
+| FISH | &quot;fish&quot; |
+| CRAB | &quot;crab&quot; |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/EnumClass.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/EnumClass.md
new file mode 100644
index 00000000000..b314590a759
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/EnumClass.md
@@ -0,0 +1,15 @@
+
+
+# EnumClass
+
+## Enum
+
+
+* `_ABC` (value: `"_abc"`)
+
+* `_EFG` (value: `"-efg"`)
+
+* `_XYZ_` (value: `"(xyz)"`)
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/EnumTest.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/EnumTest.md
new file mode 100644
index 00000000000..380a2aef0bc
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/EnumTest.md
@@ -0,0 +1,58 @@
+
+
+# EnumTest
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**enumString** | [**EnumStringEnum**](#EnumStringEnum) |  |  [optional] |
+|**enumStringRequired** | [**EnumStringRequiredEnum**](#EnumStringRequiredEnum) |  |  |
+|**enumInteger** | [**EnumIntegerEnum**](#EnumIntegerEnum) |  |  [optional] |
+|**enumNumber** | [**EnumNumberEnum**](#EnumNumberEnum) |  |  [optional] |
+|**outerEnum** | **OuterEnum** |  |  [optional] |
+|**outerEnumInteger** | **OuterEnumInteger** |  |  [optional] |
+|**outerEnumDefaultValue** | **OuterEnumDefaultValue** |  |  [optional] |
+|**outerEnumIntegerDefaultValue** | **OuterEnumIntegerDefaultValue** |  |  [optional] |
+
+
+
+## Enum: EnumStringEnum
+
+| Name | Value |
+|---- | -----|
+| UPPER | &quot;UPPER&quot; |
+| LOWER | &quot;lower&quot; |
+| EMPTY | &quot;&quot; |
+
+
+
+## Enum: EnumStringRequiredEnum
+
+| Name | Value |
+|---- | -----|
+| UPPER | &quot;UPPER&quot; |
+| LOWER | &quot;lower&quot; |
+| EMPTY | &quot;&quot; |
+
+
+
+## Enum: EnumIntegerEnum
+
+| Name | Value |
+|---- | -----|
+| NUMBER_1 | 1 |
+| NUMBER_MINUS_1 | -1 |
+
+
+
+## Enum: EnumNumberEnum
+
+| Name | Value |
+|---- | -----|
+| NUMBER_1_DOT_1 | 1.1 |
+| NUMBER_MINUS_1_DOT_2 | -1.2 |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/FakeApi.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/FakeApi.md
new file mode 100644
index 00000000000..02df4858d16
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/FakeApi.md
@@ -0,0 +1,1555 @@
+# FakeApi
+
+All URIs are relative to *http://petstore.swagger.io:80/v2*
+
+| Method | HTTP request | Description |
+|------------- | ------------- | -------------|
+| [**fakeBigDecimalMap**](FakeApi.md#fakeBigDecimalMap) | **GET** /fake/BigDecimalMap |  |
+| [**fakeHealthGet**](FakeApi.md#fakeHealthGet) | **GET** /fake/health | Health check endpoint |
+| [**fakeHttpSignatureTest**](FakeApi.md#fakeHttpSignatureTest) | **GET** /fake/http-signature-test | test http signature authentication |
+| [**fakeOuterBooleanSerialize**](FakeApi.md#fakeOuterBooleanSerialize) | **POST** /fake/outer/boolean |  |
+| [**fakeOuterCompositeSerialize**](FakeApi.md#fakeOuterCompositeSerialize) | **POST** /fake/outer/composite |  |
+| [**fakeOuterNumberSerialize**](FakeApi.md#fakeOuterNumberSerialize) | **POST** /fake/outer/number |  |
+| [**fakeOuterStringSerialize**](FakeApi.md#fakeOuterStringSerialize) | **POST** /fake/outer/string |  |
+| [**fakePropertyEnumIntegerSerialize**](FakeApi.md#fakePropertyEnumIntegerSerialize) | **POST** /fake/property/enum-int |  |
+| [**testAdditionalPropertiesReference**](FakeApi.md#testAdditionalPropertiesReference) | **POST** /fake/additionalProperties-reference | test referenced additionalProperties |
+| [**testBodyWithBinary**](FakeApi.md#testBodyWithBinary) | **PUT** /fake/body-with-binary |  |
+| [**testBodyWithFileSchema**](FakeApi.md#testBodyWithFileSchema) | **PUT** /fake/body-with-file-schema |  |
+| [**testBodyWithQueryParams**](FakeApi.md#testBodyWithQueryParams) | **PUT** /fake/body-with-query-params |  |
+| [**testClientModel**](FakeApi.md#testClientModel) | **PATCH** /fake | To test \&quot;client\&quot; model |
+| [**testEndpointParameters**](FakeApi.md#testEndpointParameters) | **POST** /fake | Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트  |
+| [**testEnumParameters**](FakeApi.md#testEnumParameters) | **GET** /fake | To test enum parameters |
+| [**testGroupParameters**](FakeApi.md#testGroupParameters) | **DELETE** /fake | Fake endpoint to test group parameters (optional) |
+| [**testInlineAdditionalProperties**](FakeApi.md#testInlineAdditionalProperties) | **POST** /fake/inline-additionalProperties | test inline additionalProperties |
+| [**testInlineFreeformAdditionalProperties**](FakeApi.md#testInlineFreeformAdditionalProperties) | **POST** /fake/inline-freeform-additionalProperties | test inline free-form additionalProperties |
+| [**testJsonFormData**](FakeApi.md#testJsonFormData) | **GET** /fake/jsonFormData | test json serialization of form data |
+| [**testNullable**](FakeApi.md#testNullable) | **POST** /fake/nullable | test nullable parent property |
+| [**testQueryParameterCollectionFormat**](FakeApi.md#testQueryParameterCollectionFormat) | **PUT** /fake/test-query-parameters |  |
+| [**testStringMapReference**](FakeApi.md#testStringMapReference) | **POST** /fake/stringMap-reference | test referenced string map |
+
+
+
+## fakeBigDecimalMap
+
+> FakeBigDecimalMap200Response fakeBigDecimalMap()
+
+
+
+for Java apache and Java native, test toUrlQueryString for maps with BegDecimal keys
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        try {
+            FakeBigDecimalMap200Response result = apiInstance.fakeBigDecimalMap();
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#fakeBigDecimalMap");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+This endpoint does not need any parameter.
+
+### Return type
+
+[**FakeBigDecimalMap200Response**](FakeBigDecimalMap200Response.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: Not defined
+- **Accept**: */*
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
+
+## fakeHealthGet
+
+> HealthCheckResult fakeHealthGet()
+
+Health check endpoint
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        try {
+            HealthCheckResult result = apiInstance.fakeHealthGet();
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#fakeHealthGet");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+This endpoint does not need any parameter.
+
+### Return type
+
+[**HealthCheckResult**](HealthCheckResult.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: Not defined
+- **Accept**: application/json
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | The instance started successfully |  -  |
+
+
+## fakeHttpSignatureTest
+
+> void fakeHttpSignatureTest(pet, query1, header1)
+
+test http signature authentication
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.auth.*;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+        
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        Pet pet = new Pet(); // Pet | Pet object that needs to be added to the store
+        String query1 = "query1_example"; // String | query parameter
+        String header1 = "header1_example"; // String | header parameter
+        try {
+            void result = apiInstance.fakeHttpSignatureTest(pet, query1, header1);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#fakeHttpSignatureTest");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **pet** | [**Pet**](Pet.md)| Pet object that needs to be added to the store | |
+| **query1** | **String**| query parameter | [optional] |
+| **header1** | **String**| header parameter | [optional] |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+[http_signature_test](../README.md#http_signature_test)
+
+### HTTP request headers
+
+- **Content-Type**: application/json, application/xml
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | The instance started successfully |  -  |
+
+
+## fakeOuterBooleanSerialize
+
+> Boolean fakeOuterBooleanSerialize(body)
+
+
+
+Test serialization of outer boolean types
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        Boolean body = true; // Boolean | Input boolean as post body
+        try {
+            Boolean result = apiInstance.fakeOuterBooleanSerialize(body);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#fakeOuterBooleanSerialize");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **body** | **Boolean**| Input boolean as post body | [optional] |
+
+### Return type
+
+**Boolean**
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: */*
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Output boolean |  -  |
+
+
+## fakeOuterCompositeSerialize
+
+> OuterComposite fakeOuterCompositeSerialize(outerComposite)
+
+
+
+Test serialization of object with outer number type
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        OuterComposite outerComposite = new OuterComposite(); // OuterComposite | Input composite as post body
+        try {
+            OuterComposite result = apiInstance.fakeOuterCompositeSerialize(outerComposite);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#fakeOuterCompositeSerialize");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **outerComposite** | [**OuterComposite**](OuterComposite.md)| Input composite as post body | [optional] |
+
+### Return type
+
+[**OuterComposite**](OuterComposite.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: */*
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Output composite |  -  |
+
+
+## fakeOuterNumberSerialize
+
+> BigDecimal fakeOuterNumberSerialize(body)
+
+
+
+Test serialization of outer number types
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        BigDecimal body = new BigDecimal(78); // BigDecimal | Input number as post body
+        try {
+            BigDecimal result = apiInstance.fakeOuterNumberSerialize(body);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#fakeOuterNumberSerialize");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **body** | **BigDecimal**| Input number as post body | [optional] |
+
+### Return type
+
+[**BigDecimal**](BigDecimal.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: */*
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Output number |  -  |
+
+
+## fakeOuterStringSerialize
+
+> String fakeOuterStringSerialize(body)
+
+
+
+Test serialization of outer string types
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        String body = "body_example"; // String | Input string as post body
+        try {
+            String result = apiInstance.fakeOuterStringSerialize(body);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#fakeOuterStringSerialize");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **body** | **String**| Input string as post body | [optional] |
+
+### Return type
+
+**String**
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: */*
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Output string |  -  |
+
+
+## fakePropertyEnumIntegerSerialize
+
+> OuterObjectWithEnumProperty fakePropertyEnumIntegerSerialize(outerObjectWithEnumProperty)
+
+
+
+Test serialization of enum (int) properties with examples
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        OuterObjectWithEnumProperty outerObjectWithEnumProperty = new OuterObjectWithEnumProperty(); // OuterObjectWithEnumProperty | Input enum (int) as post body
+        try {
+            OuterObjectWithEnumProperty result = apiInstance.fakePropertyEnumIntegerSerialize(outerObjectWithEnumProperty);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#fakePropertyEnumIntegerSerialize");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **outerObjectWithEnumProperty** | [**OuterObjectWithEnumProperty**](OuterObjectWithEnumProperty.md)| Input enum (int) as post body | |
+
+### Return type
+
+[**OuterObjectWithEnumProperty**](OuterObjectWithEnumProperty.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: */*
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Output enum (int) |  -  |
+
+
+## testAdditionalPropertiesReference
+
+> void testAdditionalPropertiesReference(requestBody)
+
+test referenced additionalProperties
+
+
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        Map<String, Object> requestBody = null; // Map<String, Object> | request body
+        try {
+            void result = apiInstance.testAdditionalPropertiesReference(requestBody);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testAdditionalPropertiesReference");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **requestBody** | [**Map&lt;String, Object&gt;**](Object.md)| request body | |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
+
+## testBodyWithBinary
+
+> void testBodyWithBinary(body)
+
+
+
+For this test, the body has to be a binary file.
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        File body = new File("/path/to/file"); // File | image to upload
+        try {
+            void result = apiInstance.testBodyWithBinary(body);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testBodyWithBinary");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **body** | **File**| image to upload | |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: image/png
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Success |  -  |
+
+
+## testBodyWithFileSchema
+
+> void testBodyWithFileSchema(fileSchemaTestClass)
+
+
+
+For this test, the body for this request must reference a schema named &#x60;File&#x60;.
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        FileSchemaTestClass fileSchemaTestClass = new FileSchemaTestClass(); // FileSchemaTestClass | 
+        try {
+            void result = apiInstance.testBodyWithFileSchema(fileSchemaTestClass);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testBodyWithFileSchema");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **fileSchemaTestClass** | [**FileSchemaTestClass**](FileSchemaTestClass.md)|  | |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Success |  -  |
+
+
+## testBodyWithQueryParams
+
+> void testBodyWithQueryParams(query, user)
+
+
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        String query = "query_example"; // String | 
+        User user = new User(); // User | 
+        try {
+            void result = apiInstance.testBodyWithQueryParams(query, user);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testBodyWithQueryParams");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **query** | **String**|  | |
+| **user** | [**User**](User.md)|  | |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Success |  -  |
+
+
+## testClientModel
+
+> Client testClientModel(client)
+
+To test \&quot;client\&quot; model
+
+To test \&quot;client\&quot; model
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        Client client = new Client(); // Client | client model
+        try {
+            Client result = apiInstance.testClientModel(client);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testClientModel");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **client** | [**Client**](Client.md)| client model | |
+
+### Return type
+
+[**Client**](Client.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: application/json
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
+
+## testEndpointParameters
+
+> void testEndpointParameters(number, _double, patternWithoutDelimiter, _byte, integer, int32, int64, _float, string, binary, date, dateTime, password, paramCallback)
+
+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 
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.auth.*;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+        
+        // Configure HTTP basic authorization: http_basic_test
+        HttpBasicAuth http_basic_test = (HttpBasicAuth) defaultClient.getAuthentication("http_basic_test");
+        http_basic_test.setUsername("YOUR USERNAME");
+        http_basic_test.setPassword("YOUR PASSWORD");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        BigDecimal number = new BigDecimal(78); // BigDecimal | None
+        Double _double = 3.4D; // Double | None
+        String patternWithoutDelimiter = "patternWithoutDelimiter_example"; // String | None
+        byte[] _byte = null; // byte[] | None
+        Integer integer = 56; // Integer | None
+        Integer int32 = 56; // Integer | None
+        Long int64 = 56L; // Long | None
+        Float _float = 3.4F; // Float | None
+        String string = "string_example"; // String | None
+        File binary = new File("/path/to/file"); // File | None
+        Date date = new Date(); // Date | None
+        Date dateTime = new Date(); // Date | None
+        String password = "password_example"; // String | None
+        String paramCallback = "paramCallback_example"; // String | None
+        try {
+            void result = apiInstance.testEndpointParameters(number, _double, patternWithoutDelimiter, _byte, integer, int32, int64, _float, string, binary, date, dateTime, password, paramCallback);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testEndpointParameters");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **number** | **BigDecimal**| None | |
+| **_double** | **Double**| None | |
+| **patternWithoutDelimiter** | **String**| None | |
+| **_byte** | **byte[]**| None | |
+| **integer** | **Integer**| None | [optional] |
+| **int32** | **Integer**| None | [optional] |
+| **int64** | **Long**| None | [optional] |
+| **_float** | **Float**| None | [optional] |
+| **string** | **String**| None | [optional] |
+| **binary** | **File**| None | [optional] |
+| **date** | **Date**| None | [optional] |
+| **dateTime** | **Date**| None | [optional] |
+| **password** | **String**| None | [optional] |
+| **paramCallback** | **String**| None | [optional] |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+[http_basic_test](../README.md#http_basic_test)
+
+### HTTP request headers
+
+- **Content-Type**: application/x-www-form-urlencoded
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **400** | Invalid username supplied |  -  |
+| **404** | User not found |  -  |
+
+
+## testEnumParameters
+
+> void testEnumParameters(enumHeaderStringArray, enumHeaderString, enumQueryStringArray, enumQueryString, enumQueryInteger, enumQueryDouble, enumQueryModelArray, enumFormStringArray, enumFormString)
+
+To test enum parameters
+
+To test enum parameters
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        List<String> enumHeaderStringArray = Arrays.asList("$"); // List<String> | Header parameter enum test (string array)
+        String enumHeaderString = "_abc"; // String | Header parameter enum test (string)
+        List<String> enumQueryStringArray = Arrays.asList("$"); // List<String> | Query parameter enum test (string array)
+        String enumQueryString = "_abc"; // String | Query parameter enum test (string)
+        Integer enumQueryInteger = 1; // Integer | Query parameter enum test (double)
+        Double enumQueryDouble = 1.1D; // Double | Query parameter enum test (double)
+        List<EnumClass> enumQueryModelArray = Arrays.asList(-efg); // List<EnumClass> | 
+        List<String> enumFormStringArray = Arrays.asList("$"); // List<String> | Form parameter enum test (string array)
+        String enumFormString = "_abc"; // String | Form parameter enum test (string)
+        try {
+            void result = apiInstance.testEnumParameters(enumHeaderStringArray, enumHeaderString, enumQueryStringArray, enumQueryString, enumQueryInteger, enumQueryDouble, enumQueryModelArray, enumFormStringArray, enumFormString);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testEnumParameters");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **enumHeaderStringArray** | [**List&lt;String&gt;**](String.md)| Header parameter enum test (string array) | [optional] [enum: >, $] |
+| **enumHeaderString** | **String**| Header parameter enum test (string) | [optional] [default to -efg] [enum: _abc, -efg, (xyz)] |
+| **enumQueryStringArray** | [**List&lt;String&gt;**](String.md)| Query parameter enum test (string array) | [optional] [enum: >, $] |
+| **enumQueryString** | **String**| Query parameter enum test (string) | [optional] [default to -efg] [enum: _abc, -efg, (xyz)] |
+| **enumQueryInteger** | **Integer**| Query parameter enum test (double) | [optional] [enum: 1, -2] |
+| **enumQueryDouble** | **Double**| Query parameter enum test (double) | [optional] [enum: 1.1, -1.2] |
+| **enumQueryModelArray** | [**List&lt;EnumClass&gt;**](EnumClass.md)|  | [optional] |
+| **enumFormStringArray** | [**List&lt;String&gt;**](String.md)| Form parameter enum test (string array) | [optional] [enum: >, $] |
+| **enumFormString** | **String**| Form parameter enum test (string) | [optional] [default to -efg] [enum: _abc, -efg, (xyz)] |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/x-www-form-urlencoded
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **400** | Invalid request |  -  |
+| **404** | Not found |  -  |
+
+
+## testGroupParameters
+
+> void testGroupParameters(requiredStringGroup, requiredBooleanGroup, requiredInt64Group, stringGroup, booleanGroup, int64Group)
+
+Fake endpoint to test group parameters (optional)
+
+Fake endpoint to test group parameters (optional)
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.auth.*;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+        
+        // Configure HTTP bearer authorization: bearer_test
+        HttpBearerAuth bearer_test = (HttpBearerAuth) defaultClient.getAuthentication("bearer_test");
+        bearer_test.setBearerToken("BEARER TOKEN");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        Integer requiredStringGroup = 56; // Integer | Required String in group parameters
+        Boolean requiredBooleanGroup = true; // Boolean | Required Boolean in group parameters
+        Long requiredInt64Group = 56L; // Long | Required Integer in group parameters
+        Integer stringGroup = 56; // Integer | String in group parameters
+        Boolean booleanGroup = true; // Boolean | Boolean in group parameters
+        Long int64Group = 56L; // Long | Integer in group parameters
+        try {
+            void result = apiInstance.testGroupParameters(requiredStringGroup, requiredBooleanGroup, requiredInt64Group, stringGroup, booleanGroup, int64Group);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testGroupParameters");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **requiredStringGroup** | **Integer**| Required String in group parameters | |
+| **requiredBooleanGroup** | **Boolean**| Required Boolean in group parameters | |
+| **requiredInt64Group** | **Long**| Required Integer in group parameters | |
+| **stringGroup** | **Integer**| String in group parameters | [optional] |
+| **booleanGroup** | **Boolean**| Boolean in group parameters | [optional] |
+| **int64Group** | **Long**| Integer in group parameters | [optional] |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+[bearer_test](../README.md#bearer_test)
+
+### HTTP request headers
+
+- **Content-Type**: Not defined
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **400** | Something wrong |  -  |
+
+
+## testInlineAdditionalProperties
+
+> void testInlineAdditionalProperties(requestBody)
+
+test inline additionalProperties
+
+
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        Map<String, String> requestBody = new HashMap(); // Map<String, String> | request body
+        try {
+            void result = apiInstance.testInlineAdditionalProperties(requestBody);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testInlineAdditionalProperties");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **requestBody** | [**Map&lt;String, String&gt;**](String.md)| request body | |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
+
+## testInlineFreeformAdditionalProperties
+
+> void testInlineFreeformAdditionalProperties(testInlineFreeformAdditionalPropertiesRequest)
+
+test inline free-form additionalProperties
+
+
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        TestInlineFreeformAdditionalPropertiesRequest testInlineFreeformAdditionalPropertiesRequest = new TestInlineFreeformAdditionalPropertiesRequest(); // TestInlineFreeformAdditionalPropertiesRequest | request body
+        try {
+            void result = apiInstance.testInlineFreeformAdditionalProperties(testInlineFreeformAdditionalPropertiesRequest);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testInlineFreeformAdditionalProperties");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **testInlineFreeformAdditionalPropertiesRequest** | [**TestInlineFreeformAdditionalPropertiesRequest**](TestInlineFreeformAdditionalPropertiesRequest.md)| request body | |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
+
+## testJsonFormData
+
+> void testJsonFormData(param, param2)
+
+test json serialization of form data
+
+
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        String param = "param_example"; // String | field1
+        String param2 = "param2_example"; // String | field2
+        try {
+            void result = apiInstance.testJsonFormData(param, param2);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testJsonFormData");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **param** | **String**| field1 | |
+| **param2** | **String**| field2 | |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/x-www-form-urlencoded
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
+
+## testNullable
+
+> void testNullable(childWithNullable)
+
+test nullable parent property
+
+
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        ChildWithNullable childWithNullable = new ChildWithNullable(); // ChildWithNullable | request body
+        try {
+            void result = apiInstance.testNullable(childWithNullable);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testNullable");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **childWithNullable** | [**ChildWithNullable**](ChildWithNullable.md)| request body | |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
+
+## testQueryParameterCollectionFormat
+
+> void testQueryParameterCollectionFormat(pipe, ioutil, http, url, context, allowEmpty, language)
+
+
+
+To test the collection format in query parameters
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        List<String> pipe = Arrays.asList(); // List<String> | 
+        List<String> ioutil = Arrays.asList(); // List<String> | 
+        List<String> http = Arrays.asList(); // List<String> | 
+        List<String> url = Arrays.asList(); // List<String> | 
+        List<String> context = Arrays.asList(); // List<String> | 
+        String allowEmpty = "allowEmpty_example"; // String | 
+        Map<String, String> language = new HashMap(); // Map<String, String> | 
+        try {
+            void result = apiInstance.testQueryParameterCollectionFormat(pipe, ioutil, http, url, context, allowEmpty, language);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testQueryParameterCollectionFormat");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **pipe** | [**List&lt;String&gt;**](String.md)|  | |
+| **ioutil** | [**List&lt;String&gt;**](String.md)|  | |
+| **http** | [**List&lt;String&gt;**](String.md)|  | |
+| **url** | [**List&lt;String&gt;**](String.md)|  | |
+| **context** | [**List&lt;String&gt;**](String.md)|  | |
+| **allowEmpty** | **String**|  | |
+| **language** | [**Map&lt;String, String&gt;**](String.md)|  | [optional] |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: Not defined
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Success |  -  |
+
+
+## testStringMapReference
+
+> void testStringMapReference(requestBody)
+
+test referenced string map
+
+
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        Map<String, String> requestBody = new HashMap(); // Map<String, String> | request body
+        try {
+            void result = apiInstance.testStringMapReference(requestBody);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testStringMapReference");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **requestBody** | [**Map&lt;String, String&gt;**](String.md)| request body | |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/FakeBigDecimalMap200Response.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/FakeBigDecimalMap200Response.md
new file mode 100644
index 00000000000..475be1d2d73
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/FakeBigDecimalMap200Response.md
@@ -0,0 +1,14 @@
+
+
+# FakeBigDecimalMap200Response
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**someId** | **BigDecimal** |  |  [optional] |
+|**someMap** | **Map&lt;String, BigDecimal&gt;** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/FakeClassnameTags123Api.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/FakeClassnameTags123Api.md
new file mode 100644
index 00000000000..e4ff70ed909
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/FakeClassnameTags123Api.md
@@ -0,0 +1,82 @@
+# FakeClassnameTags123Api
+
+All URIs are relative to *http://petstore.swagger.io:80/v2*
+
+| Method | HTTP request | Description |
+|------------- | ------------- | -------------|
+| [**testClassname**](FakeClassnameTags123Api.md#testClassname) | **PATCH** /fake_classname_test | To test class name in snake case |
+
+
+
+## testClassname
+
+> Client testClassname(client)
+
+To test class name in snake case
+
+To test class name in snake case
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.auth.*;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeClassnameTags123Api;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+        
+        // Configure API key authorization: api_key_query
+        ApiKeyAuth api_key_query = (ApiKeyAuth) defaultClient.getAuthentication("api_key_query");
+        api_key_query.setApiKey("YOUR API KEY");
+        // Uncomment the following line to set a prefix for the API key, e.g. "Token" (defaults to null)
+        //api_key_query.setApiKeyPrefix("Token");
+
+        FakeClassnameTags123Api apiInstance = new FakeClassnameTags123Api(defaultClient);
+        Client client = new Client(); // Client | client model
+        try {
+            Client result = apiInstance.testClassname(client);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeClassnameTags123Api#testClassname");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **client** | [**Client**](Client.md)| client model | |
+
+### Return type
+
+[**Client**](Client.md)
+
+### Authorization
+
+[api_key_query](../README.md#api_key_query)
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: application/json
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/FileSchemaTestClass.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/FileSchemaTestClass.md
new file mode 100644
index 00000000000..85d1a063669
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/FileSchemaTestClass.md
@@ -0,0 +1,14 @@
+
+
+# FileSchemaTestClass
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**_file** | [**ModelFile**](ModelFile.md) |  |  [optional] |
+|**files** | [**List&lt;ModelFile&gt;**](ModelFile.md) |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Foo.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Foo.md
new file mode 100644
index 00000000000..6b3f0556528
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Foo.md
@@ -0,0 +1,13 @@
+
+
+# Foo
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**bar** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/FooGetDefaultResponse.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/FooGetDefaultResponse.md
new file mode 100644
index 00000000000..ff3d7a3a56c
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/FooGetDefaultResponse.md
@@ -0,0 +1,13 @@
+
+
+# FooGetDefaultResponse
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**string** | [**Foo**](Foo.md) |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/FormatTest.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/FormatTest.md
new file mode 100644
index 00000000000..d5b492c6e4e
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/FormatTest.md
@@ -0,0 +1,28 @@
+
+
+# FormatTest
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**integer** | **Integer** |  |  [optional] |
+|**int32** | **Integer** |  |  [optional] |
+|**int64** | **Long** |  |  [optional] |
+|**number** | **BigDecimal** |  |  |
+|**_float** | **Float** |  |  [optional] |
+|**_double** | **Double** |  |  [optional] |
+|**decimal** | **BigDecimal** |  |  [optional] |
+|**string** | **String** |  |  [optional] |
+|**_byte** | **byte[]** |  |  |
+|**binary** | **File** |  |  [optional] |
+|**date** | **Date** |  |  |
+|**dateTime** | **Date** |  |  [optional] |
+|**uuid** | **UUID** |  |  [optional] |
+|**password** | **String** |  |  |
+|**patternWithDigits** | **String** | A string that is a 10 digit number. Can have leading zeros. |  [optional] |
+|**patternWithDigitsAndDelimiter** | **String** | A string starting with &#39;image_&#39; (case insensitive) and one to three digits following i.e. Image_01. |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/HasOnlyReadOnly.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/HasOnlyReadOnly.md
new file mode 100644
index 00000000000..29da5205dbb
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/HasOnlyReadOnly.md
@@ -0,0 +1,14 @@
+
+
+# HasOnlyReadOnly
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**bar** | **String** |  |  [optional] [readonly] |
+|**foo** | **String** |  |  [optional] [readonly] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/HealthCheckResult.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/HealthCheckResult.md
new file mode 100644
index 00000000000..4885e6f1cad
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/HealthCheckResult.md
@@ -0,0 +1,14 @@
+
+
+# HealthCheckResult
+
+Just a string to inform instance is up and running. Make it nullable in hope to get it as pointer in generated model.
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**nullableMessage** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/MapTest.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/MapTest.md
new file mode 100644
index 00000000000..54380188e1d
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/MapTest.md
@@ -0,0 +1,25 @@
+
+
+# MapTest
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**mapMapOfString** | **Map&lt;String, Map&lt;String, String&gt;&gt;** |  |  [optional] |
+|**mapOfEnumString** | [**Map&lt;String, InnerEnum&gt;**](#Map&lt;String, InnerEnum&gt;) |  |  [optional] |
+|**directMap** | **Map&lt;String, Boolean&gt;** |  |  [optional] |
+|**indirectMap** | **Map&lt;String, Boolean&gt;** |  |  [optional] |
+
+
+
+## Enum: Map&lt;String, InnerEnum&gt;
+
+| Name | Value |
+|---- | -----|
+| UPPER | &quot;UPPER&quot; |
+| LOWER | &quot;lower&quot; |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/MixedPropertiesAndAdditionalPropertiesClass.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/MixedPropertiesAndAdditionalPropertiesClass.md
new file mode 100644
index 00000000000..f9867c07e7c
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/MixedPropertiesAndAdditionalPropertiesClass.md
@@ -0,0 +1,15 @@
+
+
+# MixedPropertiesAndAdditionalPropertiesClass
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**uuid** | **UUID** |  |  [optional] |
+|**dateTime** | **Date** |  |  [optional] |
+|**map** | [**Map&lt;String, Animal&gt;**](Animal.md) |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Model200Response.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Model200Response.md
new file mode 100644
index 00000000000..109411580c6
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Model200Response.md
@@ -0,0 +1,15 @@
+
+
+# Model200Response
+
+Model for testing model name starting with number
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**name** | **Integer** |  |  [optional] |
+|**propertyClass** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ModelApiResponse.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ModelApiResponse.md
index cd7e3c400be..e374c2dd2de 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ModelApiResponse.md
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ModelApiResponse.md
@@ -2,7 +2,6 @@
 
 # ModelApiResponse
 
-Describes the result of uploading an image resource
 
 ## Properties
 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ModelFile.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ModelFile.md
new file mode 100644
index 00000000000..adcde984f52
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ModelFile.md
@@ -0,0 +1,14 @@
+
+
+# ModelFile
+
+Must be named `File` for test.
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**sourceURI** | **String** | Test capitalization |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ModelList.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ModelList.md
new file mode 100644
index 00000000000..f93ab7dde8d
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ModelList.md
@@ -0,0 +1,13 @@
+
+
+# ModelList
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**_123list** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ModelReturn.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ModelReturn.md
new file mode 100644
index 00000000000..0bd356861eb
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ModelReturn.md
@@ -0,0 +1,14 @@
+
+
+# ModelReturn
+
+Model for testing reserved words
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**_return** | **Integer** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Name.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Name.md
new file mode 100644
index 00000000000..c901d943530
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Name.md
@@ -0,0 +1,17 @@
+
+
+# Name
+
+Model for testing model name same as property name
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**name** | **Integer** |  |  |
+|**snakeCase** | **Integer** |  |  [optional] [readonly] |
+|**property** | **String** |  |  [optional] |
+|**_123number** | **Integer** |  |  [optional] [readonly] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/NullableClass.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/NullableClass.md
new file mode 100644
index 00000000000..ba2b7f38034
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/NullableClass.md
@@ -0,0 +1,24 @@
+
+
+# NullableClass
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**integerProp** | **Integer** |  |  [optional] |
+|**numberProp** | **BigDecimal** |  |  [optional] |
+|**booleanProp** | **Boolean** |  |  [optional] |
+|**stringProp** | **String** |  |  [optional] |
+|**dateProp** | **Date** |  |  [optional] |
+|**datetimeProp** | **Date** |  |  [optional] |
+|**arrayNullableProp** | **List&lt;Object&gt;** |  |  [optional] |
+|**arrayAndItemsNullableProp** | **List&lt;Object&gt;** |  |  [optional] |
+|**arrayItemsNullable** | **List&lt;Object&gt;** |  |  [optional] |
+|**objectNullableProp** | **Map&lt;String, Object&gt;** |  |  [optional] |
+|**objectAndItemsNullableProp** | **Map&lt;String, Object&gt;** |  |  [optional] |
+|**objectItemsNullable** | **Map&lt;String, Object&gt;** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/NumberOnly.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/NumberOnly.md
new file mode 100644
index 00000000000..b8ed1a4cfae
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/NumberOnly.md
@@ -0,0 +1,13 @@
+
+
+# NumberOnly
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**justNumber** | **BigDecimal** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ObjectWithDeprecatedFields.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ObjectWithDeprecatedFields.md
new file mode 100644
index 00000000000..f1cf571f4c0
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ObjectWithDeprecatedFields.md
@@ -0,0 +1,16 @@
+
+
+# ObjectWithDeprecatedFields
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**uuid** | **String** |  |  [optional] |
+|**id** | **BigDecimal** |  |  [optional] |
+|**deprecatedRef** | [**DeprecatedObject**](DeprecatedObject.md) |  |  [optional] |
+|**bars** | **List&lt;String&gt;** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Order.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Order.md
index 7bfa42e6a90..4993c503e5f 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Order.md
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Order.md
@@ -2,7 +2,6 @@
 
 # Order
 
-An order for a pets from the pet store
 
 ## Properties
 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/OuterComposite.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/OuterComposite.md
new file mode 100644
index 00000000000..98b56e0763f
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/OuterComposite.md
@@ -0,0 +1,15 @@
+
+
+# OuterComposite
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**myNumber** | **BigDecimal** |  |  [optional] |
+|**myString** | **String** |  |  [optional] |
+|**myBoolean** | **Boolean** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/OuterEnum.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/OuterEnum.md
new file mode 100644
index 00000000000..1f9b723eb8e
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/OuterEnum.md
@@ -0,0 +1,15 @@
+
+
+# OuterEnum
+
+## Enum
+
+
+* `PLACED` (value: `"placed"`)
+
+* `APPROVED` (value: `"approved"`)
+
+* `DELIVERED` (value: `"delivered"`)
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/OuterEnumDefaultValue.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/OuterEnumDefaultValue.md
new file mode 100644
index 00000000000..cbc7f4ba54d
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/OuterEnumDefaultValue.md
@@ -0,0 +1,15 @@
+
+
+# OuterEnumDefaultValue
+
+## Enum
+
+
+* `PLACED` (value: `"placed"`)
+
+* `APPROVED` (value: `"approved"`)
+
+* `DELIVERED` (value: `"delivered"`)
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/OuterEnumInteger.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/OuterEnumInteger.md
new file mode 100644
index 00000000000..f71dea30ad0
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/OuterEnumInteger.md
@@ -0,0 +1,15 @@
+
+
+# OuterEnumInteger
+
+## Enum
+
+
+* `NUMBER_0` (value: `0`)
+
+* `NUMBER_1` (value: `1`)
+
+* `NUMBER_2` (value: `2`)
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/OuterEnumIntegerDefaultValue.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/OuterEnumIntegerDefaultValue.md
new file mode 100644
index 00000000000..99e6389f427
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/OuterEnumIntegerDefaultValue.md
@@ -0,0 +1,15 @@
+
+
+# OuterEnumIntegerDefaultValue
+
+## Enum
+
+
+* `NUMBER_0` (value: `0`)
+
+* `NUMBER_1` (value: `1`)
+
+* `NUMBER_2` (value: `2`)
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/OuterObjectWithEnumProperty.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/OuterObjectWithEnumProperty.md
new file mode 100644
index 00000000000..0fafaaa2715
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/OuterObjectWithEnumProperty.md
@@ -0,0 +1,13 @@
+
+
+# OuterObjectWithEnumProperty
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**value** | **OuterEnumInteger** |  |  |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ParentWithNullable.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ParentWithNullable.md
new file mode 100644
index 00000000000..e4d32298563
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ParentWithNullable.md
@@ -0,0 +1,22 @@
+
+
+# ParentWithNullable
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**type** | [**TypeEnum**](#TypeEnum) |  |  [optional] |
+|**nullableProperty** | **String** |  |  [optional] |
+
+
+
+## Enum: TypeEnum
+
+| Name | Value |
+|---- | -----|
+| CHILD_WITH_NULLABLE | &quot;ChildWithNullable&quot; |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Pet.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Pet.md
index 8bb36330123..54af77a9f5a 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Pet.md
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Pet.md
@@ -2,7 +2,6 @@
 
 # Pet
 
-A pet for sale in the pet store
 
 ## Properties
 
@@ -11,7 +10,7 @@ A pet for sale in the pet store
 |**id** | **Long** |  |  [optional] |
 |**category** | [**Category**](Category.md) |  |  [optional] |
 |**name** | **String** |  |  |
-|**photoUrls** | **List&lt;String&gt;** |  |  |
+|**photoUrls** | **Set&lt;String&gt;** |  |  |
 |**tags** | [**List&lt;Tag&gt;**](Tag.md) |  |  [optional] |
 |**status** | [**StatusEnum**](#StatusEnum) | pet status in the store |  [optional] |
 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/PetApi.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/PetApi.md
index fb5361b0808..bf4b4333d96 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/PetApi.md
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/PetApi.md
@@ -1,6 +1,6 @@
 # PetApi
 
-All URIs are relative to *http://petstore.swagger.io/v2*
+All URIs are relative to *http://petstore.swagger.io:80/v2*
 
 | Method | HTTP request | Description |
 |------------- | ------------- | -------------|
@@ -12,12 +12,13 @@ All URIs are relative to *http://petstore.swagger.io/v2*
 | [**updatePet**](PetApi.md#updatePet) | **PUT** /pet | Update an existing pet |
 | [**updatePetWithForm**](PetApi.md#updatePetWithForm) | **POST** /pet/{petId} | Updates a pet in the store with form data |
 | [**uploadFile**](PetApi.md#uploadFile) | **POST** /pet/{petId}/uploadImage | uploads an image |
+| [**uploadFileWithRequiredFile**](PetApi.md#uploadFileWithRequiredFile) | **POST** /fake/{petId}/uploadImageWithRequiredFile | uploads an image (required) |
 
 
 
 ## addPet
 
-> Pet addPet(pet)
+> void addPet(pet)
 
 Add a new pet to the store
 
@@ -37,7 +38,7 @@ import org.openapitools.client.api.PetApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
         
         // Configure OAuth2 access token for authorization: petstore_auth
         OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
@@ -46,7 +47,7 @@ public class Example {
         PetApi apiInstance = new PetApi(defaultClient);
         Pet pet = new Pet(); // Pet | Pet object that needs to be added to the store
         try {
-            Pet result = apiInstance.addPet(pet);
+            void result = apiInstance.addPet(pet);
             System.out.println(result);
         } catch (ApiException e) {
             System.err.println("Exception when calling PetApi#addPet");
@@ -68,7 +69,7 @@ public class Example {
 
 ### Return type
 
-[**Pet**](Pet.md)
+[**void**](Void.md)
 
 ### Authorization
 
@@ -77,13 +78,13 @@ public class Example {
 ### HTTP request headers
 
 - **Content-Type**: application/json, application/xml
-- **Accept**: application/xml, application/json
+- **Accept**: Not defined
 
 
 ### HTTP response details
 | Status code | Description | Response headers |
 |-------------|-------------|------------------|
-| **200** | successful operation |  -  |
+| **200** | Successful operation |  -  |
 | **405** | Invalid input |  -  |
 
 
@@ -109,7 +110,7 @@ import org.openapitools.client.api.PetApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
         
         // Configure OAuth2 access token for authorization: petstore_auth
         OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
@@ -157,6 +158,7 @@ public class Example {
 ### HTTP response details
 | Status code | Description | Response headers |
 |-------------|-------------|------------------|
+| **200** | Successful operation |  -  |
 | **400** | Invalid pet value |  -  |
 
 
@@ -182,7 +184,7 @@ import org.openapitools.client.api.PetApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
         
         // Configure OAuth2 access token for authorization: petstore_auth
         OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
@@ -234,7 +236,7 @@ public class Example {
 
 ## findPetsByTags
 
-> List&lt;Pet&gt; findPetsByTags(tags)
+> Set&lt;Pet&gt; findPetsByTags(tags)
 
 Finds Pets by tags
 
@@ -254,16 +256,16 @@ import org.openapitools.client.api.PetApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
         
         // Configure OAuth2 access token for authorization: petstore_auth
         OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
         petstore_auth.setAccessToken("YOUR ACCESS TOKEN");
 
         PetApi apiInstance = new PetApi(defaultClient);
-        List<String> tags = Arrays.asList(); // List<String> | Tags to filter by
+        Set<String> tags = Arrays.asList(); // Set<String> | Tags to filter by
         try {
-            List<Pet> result = apiInstance.findPetsByTags(tags);
+            Set<Pet> result = apiInstance.findPetsByTags(tags);
             System.out.println(result);
         } catch (ApiException e) {
             System.err.println("Exception when calling PetApi#findPetsByTags");
@@ -281,11 +283,11 @@ public class Example {
 
 | Name | Type | Description  | Notes |
 |------------- | ------------- | ------------- | -------------|
-| **tags** | [**List&lt;String&gt;**](String.md)| Tags to filter by | |
+| **tags** | [**Set&lt;String&gt;**](String.md)| Tags to filter by | |
 
 ### Return type
 
-[**List&lt;Pet&gt;**](Pet.md)
+[**Set&lt;Pet&gt;**](Pet.md)
 
 ### Authorization
 
@@ -326,7 +328,7 @@ import org.openapitools.client.api.PetApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
         
         // Configure API key authorization: api_key
         ApiKeyAuth api_key = (ApiKeyAuth) defaultClient.getAuthentication("api_key");
@@ -381,7 +383,7 @@ public class Example {
 
 ## updatePet
 
-> Pet updatePet(pet)
+> void updatePet(pet)
 
 Update an existing pet
 
@@ -401,7 +403,7 @@ import org.openapitools.client.api.PetApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
         
         // Configure OAuth2 access token for authorization: petstore_auth
         OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
@@ -410,7 +412,7 @@ public class Example {
         PetApi apiInstance = new PetApi(defaultClient);
         Pet pet = new Pet(); // Pet | Pet object that needs to be added to the store
         try {
-            Pet result = apiInstance.updatePet(pet);
+            void result = apiInstance.updatePet(pet);
             System.out.println(result);
         } catch (ApiException e) {
             System.err.println("Exception when calling PetApi#updatePet");
@@ -432,7 +434,7 @@ public class Example {
 
 ### Return type
 
-[**Pet**](Pet.md)
+[**void**](Void.md)
 
 ### Authorization
 
@@ -441,13 +443,13 @@ public class Example {
 ### HTTP request headers
 
 - **Content-Type**: application/json, application/xml
-- **Accept**: application/xml, application/json
+- **Accept**: Not defined
 
 
 ### HTTP response details
 | Status code | Description | Response headers |
 |-------------|-------------|------------------|
-| **200** | successful operation |  -  |
+| **200** | Successful operation |  -  |
 | **400** | Invalid ID supplied |  -  |
 | **404** | Pet not found |  -  |
 | **405** | Validation exception |  -  |
@@ -475,7 +477,7 @@ import org.openapitools.client.api.PetApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
         
         // Configure OAuth2 access token for authorization: petstore_auth
         OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
@@ -525,6 +527,7 @@ public class Example {
 ### HTTP response details
 | Status code | Description | Response headers |
 |-------------|-------------|------------------|
+| **200** | Successful operation |  -  |
 | **405** | Invalid input |  -  |
 
 
@@ -550,7 +553,7 @@ import org.openapitools.client.api.PetApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
         
         // Configure OAuth2 access token for authorization: petstore_auth
         OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
@@ -602,3 +605,78 @@ public class Example {
 |-------------|-------------|------------------|
 | **200** | successful operation |  -  |
 
+
+## uploadFileWithRequiredFile
+
+> ModelApiResponse uploadFileWithRequiredFile(petId, requiredFile, additionalMetadata)
+
+uploads an image (required)
+
+
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.auth.*;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.PetApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+        
+        // Configure OAuth2 access token for authorization: petstore_auth
+        OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
+        petstore_auth.setAccessToken("YOUR ACCESS TOKEN");
+
+        PetApi apiInstance = new PetApi(defaultClient);
+        Long petId = 56L; // Long | ID of pet to update
+        File requiredFile = new File("/path/to/file"); // File | file to upload
+        String additionalMetadata = "additionalMetadata_example"; // String | Additional data to pass to server
+        try {
+            ModelApiResponse result = apiInstance.uploadFileWithRequiredFile(petId, requiredFile, additionalMetadata);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling PetApi#uploadFileWithRequiredFile");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **petId** | **Long**| ID of pet to update | |
+| **requiredFile** | **File**| file to upload | |
+| **additionalMetadata** | **String**| Additional data to pass to server | [optional] |
+
+### Return type
+
+[**ModelApiResponse**](ModelApiResponse.md)
+
+### Authorization
+
+[petstore_auth](../README.md#petstore_auth)
+
+### HTTP request headers
+
+- **Content-Type**: multipart/form-data
+- **Accept**: application/json
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ReadOnlyFirst.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ReadOnlyFirst.md
new file mode 100644
index 00000000000..ad6af7ee155
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/ReadOnlyFirst.md
@@ -0,0 +1,14 @@
+
+
+# ReadOnlyFirst
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**bar** | **String** |  |  [optional] [readonly] |
+|**baz** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/SingleRefType.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/SingleRefType.md
new file mode 100644
index 00000000000..cc269bb871f
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/SingleRefType.md
@@ -0,0 +1,13 @@
+
+
+# SingleRefType
+
+## Enum
+
+
+* `ADMIN` (value: `"admin"`)
+
+* `USER` (value: `"user"`)
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/SpecialModelName.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/SpecialModelName.md
new file mode 100644
index 00000000000..4b6a06e3622
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/SpecialModelName.md
@@ -0,0 +1,13 @@
+
+
+# SpecialModelName
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**$specialPropertyName** | **Long** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/StoreApi.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/StoreApi.md
index ae64b8574e2..7e03edf04b7 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/StoreApi.md
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/StoreApi.md
@@ -1,12 +1,12 @@
 # StoreApi
 
-All URIs are relative to *http://petstore.swagger.io/v2*
+All URIs are relative to *http://petstore.swagger.io:80/v2*
 
 | Method | HTTP request | Description |
 |------------- | ------------- | -------------|
-| [**deleteOrder**](StoreApi.md#deleteOrder) | **DELETE** /store/order/{orderId} | Delete purchase order by ID |
+| [**deleteOrder**](StoreApi.md#deleteOrder) | **DELETE** /store/order/{order_id} | Delete purchase order by ID |
 | [**getInventory**](StoreApi.md#getInventory) | **GET** /store/inventory | Returns pet inventories by status |
-| [**getOrderById**](StoreApi.md#getOrderById) | **GET** /store/order/{orderId} | Find purchase order by ID |
+| [**getOrderById**](StoreApi.md#getOrderById) | **GET** /store/order/{order_id} | Find purchase order by ID |
 | [**placeOrder**](StoreApi.md#placeOrder) | **POST** /store/order | Place an order for a pet |
 
 
@@ -32,7 +32,7 @@ import org.openapitools.client.api.StoreApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         StoreApi apiInstance = new StoreApi(defaultClient);
         String orderId = "orderId_example"; // String | ID of the order that needs to be deleted
@@ -100,7 +100,7 @@ import org.openapitools.client.api.StoreApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
         
         // Configure API key authorization: api_key
         ApiKeyAuth api_key = (ApiKeyAuth) defaultClient.getAuthentication("api_key");
@@ -168,7 +168,7 @@ import org.openapitools.client.api.StoreApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         StoreApi apiInstance = new StoreApi(defaultClient);
         Long orderId = 56L; // Long | ID of pet that needs to be fetched
@@ -236,7 +236,7 @@ import org.openapitools.client.api.StoreApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         StoreApi apiInstance = new StoreApi(defaultClient);
         Order order = new Order(); // Order | order placed for purchasing the pet
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Tag.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Tag.md
index abfde4afb50..5088b2dd1c3 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Tag.md
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/Tag.md
@@ -2,7 +2,6 @@
 
 # Tag
 
-A tag for a pet
 
 ## Properties
 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/TestInlineFreeformAdditionalPropertiesRequest.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/TestInlineFreeformAdditionalPropertiesRequest.md
new file mode 100644
index 00000000000..dc066e6c7da
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/TestInlineFreeformAdditionalPropertiesRequest.md
@@ -0,0 +1,13 @@
+
+
+# TestInlineFreeformAdditionalPropertiesRequest
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**someProperty** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/User.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/User.md
index 426845227bd..08813e4b10b 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/User.md
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/User.md
@@ -2,7 +2,6 @@
 
 # User
 
-A User who is purchasing from the pet store
 
 ## Properties
 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/UserApi.md b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/UserApi.md
index 89c1bfc6026..d82f8da184b 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/UserApi.md
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/docs/UserApi.md
@@ -1,6 +1,6 @@
 # UserApi
 
-All URIs are relative to *http://petstore.swagger.io/v2*
+All URIs are relative to *http://petstore.swagger.io:80/v2*
 
 | Method | HTTP request | Description |
 |------------- | ------------- | -------------|
@@ -30,20 +30,13 @@ This can only be done by the logged in user.
 import org.openapitools.client.ApiClient;
 import org.openapitools.client.ApiException;
 import org.openapitools.client.Configuration;
-import org.openapitools.client.auth.*;
 import org.openapitools.client.models.*;
 import org.openapitools.client.api.UserApi;
 
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
-        
-        // Configure API key authorization: api_key
-        ApiKeyAuth api_key = (ApiKeyAuth) defaultClient.getAuthentication("api_key");
-        api_key.setApiKey("YOUR API KEY");
-        // Uncomment the following line to set a prefix for the API key, e.g. "Token" (defaults to null)
-        //api_key.setApiKeyPrefix("Token");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         UserApi apiInstance = new UserApi(defaultClient);
         User user = new User(); // User | Created user object
@@ -74,7 +67,7 @@ public class Example {
 
 ### Authorization
 
-[api_key](../README.md#api_key)
+No authorization required
 
 ### HTTP request headers
 
@@ -103,20 +96,13 @@ Creates list of users with given input array
 import org.openapitools.client.ApiClient;
 import org.openapitools.client.ApiException;
 import org.openapitools.client.Configuration;
-import org.openapitools.client.auth.*;
 import org.openapitools.client.models.*;
 import org.openapitools.client.api.UserApi;
 
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
-        
-        // Configure API key authorization: api_key
-        ApiKeyAuth api_key = (ApiKeyAuth) defaultClient.getAuthentication("api_key");
-        api_key.setApiKey("YOUR API KEY");
-        // Uncomment the following line to set a prefix for the API key, e.g. "Token" (defaults to null)
-        //api_key.setApiKeyPrefix("Token");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         UserApi apiInstance = new UserApi(defaultClient);
         List<User> user = Arrays.asList(); // List<User> | List of user object
@@ -147,7 +133,7 @@ public class Example {
 
 ### Authorization
 
-[api_key](../README.md#api_key)
+No authorization required
 
 ### HTTP request headers
 
@@ -176,20 +162,13 @@ Creates list of users with given input array
 import org.openapitools.client.ApiClient;
 import org.openapitools.client.ApiException;
 import org.openapitools.client.Configuration;
-import org.openapitools.client.auth.*;
 import org.openapitools.client.models.*;
 import org.openapitools.client.api.UserApi;
 
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
-        
-        // Configure API key authorization: api_key
-        ApiKeyAuth api_key = (ApiKeyAuth) defaultClient.getAuthentication("api_key");
-        api_key.setApiKey("YOUR API KEY");
-        // Uncomment the following line to set a prefix for the API key, e.g. "Token" (defaults to null)
-        //api_key.setApiKeyPrefix("Token");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         UserApi apiInstance = new UserApi(defaultClient);
         List<User> user = Arrays.asList(); // List<User> | List of user object
@@ -220,7 +199,7 @@ public class Example {
 
 ### Authorization
 
-[api_key](../README.md#api_key)
+No authorization required
 
 ### HTTP request headers
 
@@ -249,20 +228,13 @@ This can only be done by the logged in user.
 import org.openapitools.client.ApiClient;
 import org.openapitools.client.ApiException;
 import org.openapitools.client.Configuration;
-import org.openapitools.client.auth.*;
 import org.openapitools.client.models.*;
 import org.openapitools.client.api.UserApi;
 
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
-        
-        // Configure API key authorization: api_key
-        ApiKeyAuth api_key = (ApiKeyAuth) defaultClient.getAuthentication("api_key");
-        api_key.setApiKey("YOUR API KEY");
-        // Uncomment the following line to set a prefix for the API key, e.g. "Token" (defaults to null)
-        //api_key.setApiKeyPrefix("Token");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         UserApi apiInstance = new UserApi(defaultClient);
         String username = "username_example"; // String | The name that needs to be deleted
@@ -293,7 +265,7 @@ public class Example {
 
 ### Authorization
 
-[api_key](../README.md#api_key)
+No authorization required
 
 ### HTTP request headers
 
@@ -329,7 +301,7 @@ import org.openapitools.client.api.UserApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         UserApi apiInstance = new UserApi(defaultClient);
         String username = "username_example"; // String | The name that needs to be fetched. Use user1 for testing.
@@ -397,7 +369,7 @@ import org.openapitools.client.api.UserApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         UserApi apiInstance = new UserApi(defaultClient);
         String username = "username_example"; // String | The user name for login
@@ -441,7 +413,7 @@ No authorization required
 ### HTTP response details
 | Status code | Description | Response headers |
 |-------------|-------------|------------------|
-| **200** | successful operation |  * Set-Cookie - Cookie authentication key for use with the &#x60;api_key&#x60; apiKey authentication. <br>  * X-Rate-Limit - calls per hour allowed by the user <br>  * X-Expires-After - date in UTC when token expires <br>  |
+| **200** | successful operation |  * X-Rate-Limit - calls per hour allowed by the user <br>  * X-Expires-After - date in UTC when token expires <br>  |
 | **400** | Invalid username/password supplied |  -  |
 
 
@@ -460,20 +432,13 @@ Logs out current logged in user session
 import org.openapitools.client.ApiClient;
 import org.openapitools.client.ApiException;
 import org.openapitools.client.Configuration;
-import org.openapitools.client.auth.*;
 import org.openapitools.client.models.*;
 import org.openapitools.client.api.UserApi;
 
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
-        
-        // Configure API key authorization: api_key
-        ApiKeyAuth api_key = (ApiKeyAuth) defaultClient.getAuthentication("api_key");
-        api_key.setApiKey("YOUR API KEY");
-        // Uncomment the following line to set a prefix for the API key, e.g. "Token" (defaults to null)
-        //api_key.setApiKeyPrefix("Token");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         UserApi apiInstance = new UserApi(defaultClient);
         try {
@@ -500,7 +465,7 @@ This endpoint does not need any parameter.
 
 ### Authorization
 
-[api_key](../README.md#api_key)
+No authorization required
 
 ### HTTP request headers
 
@@ -529,20 +494,13 @@ This can only be done by the logged in user.
 import org.openapitools.client.ApiClient;
 import org.openapitools.client.ApiException;
 import org.openapitools.client.Configuration;
-import org.openapitools.client.auth.*;
 import org.openapitools.client.models.*;
 import org.openapitools.client.api.UserApi;
 
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
-        
-        // Configure API key authorization: api_key
-        ApiKeyAuth api_key = (ApiKeyAuth) defaultClient.getAuthentication("api_key");
-        api_key.setApiKey("YOUR API KEY");
-        // Uncomment the following line to set a prefix for the API key, e.g. "Token" (defaults to null)
-        //api_key.setApiKeyPrefix("Token");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         UserApi apiInstance = new UserApi(defaultClient);
         String username = "username_example"; // String | name that need to be deleted
@@ -575,7 +533,7 @@ public class Example {
 
 ### Authorization
 
-[api_key](../README.md#api_key)
+No authorization required
 
 ### HTTP request headers
 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/pom.xml b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/pom.xml
index 5fe978cf467..16079576ce6 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/pom.xml
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/pom.xml
@@ -4,7 +4,7 @@
   <artifactId>microprofile-rest-client-3-jackson</artifactId>
   <packaging>jar</packaging>
   <name>microprofile-rest-client-3-jackson</name>
-  <description>This is a sample server Petstore server. For this sample, you can use the api key &#x60;special-key&#x60; to test the authorization filters.</description>
+  <description>This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \&quot; \\</description>
   <version>1.0.0</version>
   <build>
     <sourceDirectory>src/main/java</sourceDirectory>
@@ -158,7 +158,7 @@
     <jackson.version>2.17.1</jackson.version>
     <jakarta.activation.version>2.1.0</jakarta.activation.version>
     <jakarta.annotation.version>2.0.0</jakarta.annotation.version>
-    <jakarta.json.bind.version>2.0.0</jakarta.json.bind.version>
+    <jakarta.json.bind.version>3.0.0</jakarta.json.bind.version>
     <jakarta.json.version>2.0.1</jakarta.json.version>
     <jakarta.ws.rs.version>3.0.0</jakarta.ws.rs.version>
     <jakarta.xml.bind.version>3.0.1</jakarta.xml.bind.version>
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/RFC3339DateFormat.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/RFC3339DateFormat.java
index c75ca023ce8..1d22650ec62 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/RFC3339DateFormat.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/RFC3339DateFormat.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/AnotherFakeApi.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/AnotherFakeApi.java
new file mode 100644
index 00000000000..c22b045c6ed
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/AnotherFakeApi.java
@@ -0,0 +1,54 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.api;
+
+import org.openapitools.client.model.Client;
+
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import jakarta.ws.rs.*;
+import jakarta.ws.rs.core.Response;
+import jakarta.ws.rs.core.MediaType;
+import org.apache.cxf.jaxrs.ext.multipart.*;
+
+
+import org.eclipse.microprofile.rest.client.annotation.RegisterProvider;
+import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
+
+/**
+ * OpenAPI Petstore
+ *
+ * <p>This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ */
+
+@RegisterRestClient(configKey="petstore")
+@RegisterProvider(ApiExceptionMapper.class)
+@Path("/another-fake/dummy")
+public interface AnotherFakeApi  {
+
+    /**
+     * To test special tags
+     *
+     * To test special tags and operation ID starting with number
+     *
+     */
+    @PATCH
+    
+    @Consumes({ "application/json" })
+    @Produces({ "application/json" })
+    Client call123testSpecialTags(Client client) throws ApiException, ProcessingException;
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/ApiException.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/ApiException.java
index 2fc6d04ee68..590cd07dc74 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/ApiException.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/ApiException.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/ApiExceptionMapper.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/ApiExceptionMapper.java
index 0dec2c6aec0..42895ef7d21 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/ApiExceptionMapper.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/ApiExceptionMapper.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/DefaultApi.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/DefaultApi.java
new file mode 100644
index 00000000000..2c7f381b933
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/DefaultApi.java
@@ -0,0 +1,47 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.api;
+
+import org.openapitools.client.model.FooGetDefaultResponse;
+
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import jakarta.ws.rs.*;
+import jakarta.ws.rs.core.Response;
+import jakarta.ws.rs.core.MediaType;
+import org.apache.cxf.jaxrs.ext.multipart.*;
+
+
+import org.eclipse.microprofile.rest.client.annotation.RegisterProvider;
+import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
+
+/**
+ * OpenAPI Petstore
+ *
+ * <p>This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ */
+
+@RegisterRestClient(configKey="petstore")
+@RegisterProvider(ApiExceptionMapper.class)
+@Path("/foo")
+public interface DefaultApi  {
+
+    @GET
+    
+    @Produces({ "application/json" })
+    FooGetDefaultResponse fooGet() throws ApiException, ProcessingException;
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/FakeApi.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/FakeApi.java
new file mode 100644
index 00000000000..c23faf8ba1b
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/FakeApi.java
@@ -0,0 +1,237 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.api;
+
+import java.math.BigDecimal;
+import org.openapitools.client.model.ChildWithNullable;
+import org.openapitools.client.model.Client;
+import java.util.Date;
+import org.openapitools.client.model.EnumClass;
+import org.openapitools.client.model.FakeBigDecimalMap200Response;
+import java.io.File;
+import org.openapitools.client.model.FileSchemaTestClass;
+import org.openapitools.client.model.HealthCheckResult;
+import org.openapitools.client.model.OuterComposite;
+import org.openapitools.client.model.OuterObjectWithEnumProperty;
+import org.openapitools.client.model.Pet;
+import org.openapitools.client.model.TestInlineFreeformAdditionalPropertiesRequest;
+import org.openapitools.client.model.User;
+
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import jakarta.ws.rs.*;
+import jakarta.ws.rs.core.Response;
+import jakarta.ws.rs.core.MediaType;
+import org.apache.cxf.jaxrs.ext.multipart.*;
+
+
+import org.eclipse.microprofile.rest.client.annotation.RegisterProvider;
+import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
+
+/**
+ * OpenAPI Petstore
+ *
+ * <p>This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ */
+
+@RegisterRestClient(configKey="petstore")
+@RegisterProvider(ApiExceptionMapper.class)
+@Path("/fake")
+public interface FakeApi  {
+
+    @GET
+    @Path("/BigDecimalMap")
+    @Produces({ "*/*" })
+    FakeBigDecimalMap200Response fakeBigDecimalMap() throws ApiException, ProcessingException;
+
+    /**
+     * Health check endpoint
+     *
+     */
+    @GET
+    @Path("/health")
+    @Produces({ "application/json" })
+    HealthCheckResult fakeHealthGet() throws ApiException, ProcessingException;
+
+    /**
+     * test http signature authentication
+     *
+     */
+    @GET
+    @Path("/http-signature-test")
+    @Consumes({ "application/json", "application/xml" })
+    void fakeHttpSignatureTest(Pet pet, @QueryParam("query_1") String query1, @HeaderParam("header_1")  String header1) throws ApiException, ProcessingException;
+
+    @POST
+    @Path("/outer/boolean")
+    @Consumes({ "application/json" })
+    @Produces({ "*/*" })
+    Boolean fakeOuterBooleanSerialize(Boolean body) throws ApiException, ProcessingException;
+
+    @POST
+    @Path("/outer/composite")
+    @Consumes({ "application/json" })
+    @Produces({ "*/*" })
+    OuterComposite fakeOuterCompositeSerialize(OuterComposite outerComposite) throws ApiException, ProcessingException;
+
+    @POST
+    @Path("/outer/number")
+    @Consumes({ "application/json" })
+    @Produces({ "*/*" })
+    BigDecimal fakeOuterNumberSerialize(BigDecimal body) throws ApiException, ProcessingException;
+
+    @POST
+    @Path("/outer/string")
+    @Consumes({ "application/json" })
+    @Produces({ "*/*" })
+    String fakeOuterStringSerialize(String body) throws ApiException, ProcessingException;
+
+    @POST
+    @Path("/property/enum-int")
+    @Consumes({ "application/json" })
+    @Produces({ "*/*" })
+    OuterObjectWithEnumProperty fakePropertyEnumIntegerSerialize(OuterObjectWithEnumProperty outerObjectWithEnumProperty) throws ApiException, ProcessingException;
+
+    /**
+     * test referenced additionalProperties
+     *
+     * 
+     *
+     */
+    @POST
+    @Path("/additionalProperties-reference")
+    @Consumes({ "application/json" })
+    void testAdditionalPropertiesReference(Map<String, Object> requestBody) throws ApiException, ProcessingException;
+
+    @PUT
+    @Path("/body-with-binary")
+    @Consumes({ "image/png" })
+    void testBodyWithBinary(File body) throws ApiException, ProcessingException;
+
+    @PUT
+    @Path("/body-with-file-schema")
+    @Consumes({ "application/json" })
+    void testBodyWithFileSchema(FileSchemaTestClass fileSchemaTestClass) throws ApiException, ProcessingException;
+
+    @PUT
+    @Path("/body-with-query-params")
+    @Consumes({ "application/json" })
+    void testBodyWithQueryParams(@QueryParam("query") String query, User user) throws ApiException, ProcessingException;
+
+    /**
+     * To test \&quot;client\&quot; model
+     *
+     * To test \&quot;client\&quot; model
+     *
+     */
+    @PATCH
+    
+    @Consumes({ "application/json" })
+    @Produces({ "application/json" })
+    Client testClientModel(Client client) throws ApiException, ProcessingException;
+
+    /**
+     * 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 
+     *
+     */
+    @POST
+    
+    @Consumes({ "application/x-www-form-urlencoded" })
+    void testEndpointParameters(@Multipart(value = "number")  BigDecimal number, @Multipart(value = "double")  Double _double, @Multipart(value = "pattern_without_delimiter")  String patternWithoutDelimiter, @Multipart(value = "byte")  byte[] _byte, @Multipart(value = "integer", required = false)  Integer integer, @Multipart(value = "int32", required = false)  Integer int32, @Multipart(value = "int64", required = false)  Long int64, @Multipart(value = "float", required = false)  Float _float, @Multipart(value = "string", required = false)  String string,  @Multipart(value = "binary" , required = false) Attachment binaryDetail, @Multipart(value = "date", required = false)  Date date, @Multipart(value = "dateTime", required = false)  Date dateTime, @Multipart(value = "password", required = false)  String password, @Multipart(value = "callback", required = false)  String paramCallback) throws ApiException, ProcessingException;
+
+    /**
+     * To test enum parameters
+     *
+     * To test enum parameters
+     *
+     */
+    @GET
+    
+    @Consumes({ "application/x-www-form-urlencoded" })
+    void testEnumParameters(@HeaderParam("enum_header_string_array")  List<String> enumHeaderStringArray, @HeaderParam("enum_header_string")  String enumHeaderString, @QueryParam("enum_query_string_array") List<String> enumQueryStringArray, @QueryParam("enum_query_string") @DefaultValue("-efg") String enumQueryString, @QueryParam("enum_query_integer") Integer enumQueryInteger, @QueryParam("enum_query_double") Double enumQueryDouble, @QueryParam("enum_query_model_array") List<EnumClass> enumQueryModelArray, @Multipart(value = "enum_form_string_array", required = false)  List<String> enumFormStringArray, @Multipart(value = "enum_form_string", required = false)  String enumFormString) throws ApiException, ProcessingException;
+
+    /**
+     * Fake endpoint to test group parameters (optional)
+     *
+     * Fake endpoint to test group parameters (optional)
+     *
+     */
+    @DELETE
+    
+    void testGroupParameters(@QueryParam("required_string_group") Integer requiredStringGroup, @HeaderParam("required_boolean_group")  Boolean requiredBooleanGroup, @QueryParam("required_int64_group") Long requiredInt64Group, @QueryParam("string_group") Integer stringGroup, @HeaderParam("boolean_group")  Boolean booleanGroup, @QueryParam("int64_group") Long int64Group) throws ApiException, ProcessingException;
+
+    /**
+     * test inline additionalProperties
+     *
+     * 
+     *
+     */
+    @POST
+    @Path("/inline-additionalProperties")
+    @Consumes({ "application/json" })
+    void testInlineAdditionalProperties(Map<String, String> requestBody) throws ApiException, ProcessingException;
+
+    /**
+     * test inline free-form additionalProperties
+     *
+     * 
+     *
+     */
+    @POST
+    @Path("/inline-freeform-additionalProperties")
+    @Consumes({ "application/json" })
+    void testInlineFreeformAdditionalProperties(TestInlineFreeformAdditionalPropertiesRequest testInlineFreeformAdditionalPropertiesRequest) throws ApiException, ProcessingException;
+
+    /**
+     * test json serialization of form data
+     *
+     * 
+     *
+     */
+    @GET
+    @Path("/jsonFormData")
+    @Consumes({ "application/x-www-form-urlencoded" })
+    void testJsonFormData(@Multipart(value = "param")  String param, @Multipart(value = "param2")  String param2) throws ApiException, ProcessingException;
+
+    /**
+     * test nullable parent property
+     *
+     * 
+     *
+     */
+    @POST
+    @Path("/nullable")
+    @Consumes({ "application/json" })
+    void testNullable(ChildWithNullable childWithNullable) throws ApiException, ProcessingException;
+
+    @PUT
+    @Path("/test-query-parameters")
+    void testQueryParameterCollectionFormat(@QueryParam("pipe") List<String> pipe, @QueryParam("ioutil") List<String> ioutil, @QueryParam("http") List<String> http, @QueryParam("url") List<String> url, @QueryParam("context") List<String> context, @QueryParam("allowEmpty") String allowEmpty, @QueryParam("language") Map<String, String> language) throws ApiException, ProcessingException;
+
+    /**
+     * test referenced string map
+     *
+     * 
+     *
+     */
+    @POST
+    @Path("/stringMap-reference")
+    @Consumes({ "application/json" })
+    void testStringMapReference(Map<String, String> requestBody) throws ApiException, ProcessingException;
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
new file mode 100644
index 00000000000..1db471b0365
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
@@ -0,0 +1,54 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.api;
+
+import org.openapitools.client.model.Client;
+
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import jakarta.ws.rs.*;
+import jakarta.ws.rs.core.Response;
+import jakarta.ws.rs.core.MediaType;
+import org.apache.cxf.jaxrs.ext.multipart.*;
+
+
+import org.eclipse.microprofile.rest.client.annotation.RegisterProvider;
+import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
+
+/**
+ * OpenAPI Petstore
+ *
+ * <p>This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ */
+
+@RegisterRestClient(configKey="petstore")
+@RegisterProvider(ApiExceptionMapper.class)
+@Path("/fake_classname_test")
+public interface FakeClassnameTags123Api  {
+
+    /**
+     * To test class name in snake case
+     *
+     * To test class name in snake case
+     *
+     */
+    @PATCH
+    
+    @Consumes({ "application/json" })
+    @Produces({ "application/json" })
+    Client testClassname(Client client) throws ApiException, ProcessingException;
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/PetApi.java
index d353688861c..224b962916e 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/PetApi.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -15,6 +15,7 @@ package org.openapitools.client.api;
 import java.io.File;
 import org.openapitools.client.model.ModelApiResponse;
 import org.openapitools.client.model.Pet;
+import java.util.Set;
 
 import java.io.InputStream;
 import java.io.OutputStream;
@@ -33,13 +34,13 @@ import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
 /**
  * OpenAPI Petstore
  *
- * <p>This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * <p>This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  */
 
 @RegisterRestClient(configKey="petstore")
 @RegisterProvider(ApiExceptionMapper.class)
-@Path("/pet")
+@Path("")
 public interface PetApi  {
 
     /**
@@ -49,10 +50,9 @@ public interface PetApi  {
      *
      */
     @POST
-    
+    @Path("/pet")
     @Consumes({ "application/json", "application/xml" })
-    @Produces({ "application/xml", "application/json" })
-    Pet addPet(Pet pet) throws ApiException, ProcessingException;
+    void addPet(Pet pet) throws ApiException, ProcessingException;
 
     /**
      * Deletes a pet
@@ -61,7 +61,7 @@ public interface PetApi  {
      *
      */
     @DELETE
-    @Path("/{petId}")
+    @Path("/pet/{petId}")
     void deletePet(@PathParam("petId") Long petId, @HeaderParam("api_key")  String apiKey) throws ApiException, ProcessingException;
 
     /**
@@ -71,7 +71,7 @@ public interface PetApi  {
      *
      */
     @GET
-    @Path("/findByStatus")
+    @Path("/pet/findByStatus")
     @Produces({ "application/xml", "application/json" })
     List<Pet> findPetsByStatus(@QueryParam("status") List<String> status) throws ApiException, ProcessingException;
 
@@ -84,9 +84,9 @@ public interface PetApi  {
      */
     @Deprecated
     @GET
-    @Path("/findByTags")
+    @Path("/pet/findByTags")
     @Produces({ "application/xml", "application/json" })
-    List<Pet> findPetsByTags(@QueryParam("tags") List<String> tags) throws ApiException, ProcessingException;
+    Set<Pet> findPetsByTags(@QueryParam("tags") Set<String> tags) throws ApiException, ProcessingException;
 
     /**
      * Find pet by ID
@@ -95,7 +95,7 @@ public interface PetApi  {
      *
      */
     @GET
-    @Path("/{petId}")
+    @Path("/pet/{petId}")
     @Produces({ "application/xml", "application/json" })
     Pet getPetById(@PathParam("petId") Long petId) throws ApiException, ProcessingException;
 
@@ -106,10 +106,9 @@ public interface PetApi  {
      *
      */
     @PUT
-    
+    @Path("/pet")
     @Consumes({ "application/json", "application/xml" })
-    @Produces({ "application/xml", "application/json" })
-    Pet updatePet(Pet pet) throws ApiException, ProcessingException;
+    void updatePet(Pet pet) throws ApiException, ProcessingException;
 
     /**
      * Updates a pet in the store with form data
@@ -118,7 +117,7 @@ public interface PetApi  {
      *
      */
     @POST
-    @Path("/{petId}")
+    @Path("/pet/{petId}")
     @Consumes({ "application/x-www-form-urlencoded" })
     void updatePetWithForm(@PathParam("petId") Long petId, @Multipart(value = "name", required = false)  String name, @Multipart(value = "status", required = false)  String status) throws ApiException, ProcessingException;
 
@@ -129,8 +128,20 @@ public interface PetApi  {
      *
      */
     @POST
-    @Path("/{petId}/uploadImage")
+    @Path("/pet/{petId}/uploadImage")
     @Consumes({ "multipart/form-data" })
     @Produces({ "application/json" })
     ModelApiResponse uploadFile(@PathParam("petId") Long petId, @Multipart(value = "additionalMetadata", required = false)  String additionalMetadata,  @Multipart(value = "file" , required = false) Attachment _fileDetail) throws ApiException, ProcessingException;
+
+    /**
+     * uploads an image (required)
+     *
+     * 
+     *
+     */
+    @POST
+    @Path("/fake/{petId}/uploadImageWithRequiredFile")
+    @Consumes({ "multipart/form-data" })
+    @Produces({ "application/json" })
+    ModelApiResponse uploadFileWithRequiredFile(@PathParam("petId") Long petId,  @Multipart(value = "requiredFile" ) Attachment requiredFileDetail, @Multipart(value = "additionalMetadata", required = false)  String additionalMetadata) throws ApiException, ProcessingException;
 }
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/StoreApi.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/StoreApi.java
index cd94c5b3bca..0fdf70e0825 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/StoreApi.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/StoreApi.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -31,7 +31,7 @@ import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
 /**
  * OpenAPI Petstore
  *
- * <p>This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * <p>This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  */
 
@@ -47,8 +47,8 @@ public interface StoreApi  {
      *
      */
     @DELETE
-    @Path("/order/{orderId}")
-    void deleteOrder(@PathParam("orderId") String orderId) throws ApiException, ProcessingException;
+    @Path("/order/{order_id}")
+    void deleteOrder(@PathParam("order_id") String orderId) throws ApiException, ProcessingException;
 
     /**
      * Returns pet inventories by status
@@ -68,9 +68,9 @@ public interface StoreApi  {
      *
      */
     @GET
-    @Path("/order/{orderId}")
+    @Path("/order/{order_id}")
     @Produces({ "application/xml", "application/json" })
-    Order getOrderById(@PathParam("orderId") Long orderId) throws ApiException, ProcessingException;
+    Order getOrderById(@PathParam("order_id") Long orderId) throws ApiException, ProcessingException;
 
     /**
      * Place an order for a pet
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/UserApi.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/UserApi.java
index 7f8c13c9e08..515c42ae977 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/UserApi.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/api/UserApi.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -32,7 +32,7 @@ import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
 /**
  * OpenAPI Petstore
  *
- * <p>This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * <p>This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  */
 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/AdditionalPropertiesClass.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/AdditionalPropertiesClass.java
new file mode 100644
index 00000000000..be4be5765e0
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/AdditionalPropertiesClass.java
@@ -0,0 +1,143 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.util.HashMap;
+import java.util.Map;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  AdditionalPropertiesClass.JSON_PROPERTY_MAP_PROPERTY,
+  AdditionalPropertiesClass.JSON_PROPERTY_MAP_OF_MAP_PROPERTY
+})
+
+public class AdditionalPropertiesClass  {
+  
+  public static final String JSON_PROPERTY_MAP_PROPERTY = "map_property";
+  
+  private Map<String, String> mapProperty = null;
+
+  public static final String JSON_PROPERTY_MAP_OF_MAP_PROPERTY = "map_of_map_property";
+  
+  private Map<String, Map<String, String>> mapOfMapProperty = null;
+
+  /**
+   * Get mapProperty
+   * @return mapProperty
+   **/
+  @JsonProperty(JSON_PROPERTY_MAP_PROPERTY)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public Map<String, String> getMapProperty() {
+    return mapProperty;
+  }
+
+  /**
+   * Set mapProperty
+   */
+  @JsonProperty(JSON_PROPERTY_MAP_PROPERTY)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setMapProperty(Map<String, String> mapProperty) {
+    this.mapProperty = mapProperty;
+  }
+
+  public AdditionalPropertiesClass mapProperty(Map<String, String> mapProperty) {
+    this.mapProperty = mapProperty;
+    return this;
+  }
+
+  public AdditionalPropertiesClass putMapPropertyItem(String key, String mapPropertyItem) {
+    if (this.mapProperty == null) {
+      this.mapProperty = new HashMap<>();
+    }
+    this.mapProperty.put(key, mapPropertyItem);
+    return this;
+  }
+
+  /**
+   * Get mapOfMapProperty
+   * @return mapOfMapProperty
+   **/
+  @JsonProperty(JSON_PROPERTY_MAP_OF_MAP_PROPERTY)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public Map<String, Map<String, String>> getMapOfMapProperty() {
+    return mapOfMapProperty;
+  }
+
+  /**
+   * Set mapOfMapProperty
+   */
+  @JsonProperty(JSON_PROPERTY_MAP_OF_MAP_PROPERTY)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setMapOfMapProperty(Map<String, Map<String, String>> mapOfMapProperty) {
+    this.mapOfMapProperty = mapOfMapProperty;
+  }
+
+  public AdditionalPropertiesClass mapOfMapProperty(Map<String, Map<String, String>> mapOfMapProperty) {
+    this.mapOfMapProperty = mapOfMapProperty;
+    return this;
+  }
+
+  public AdditionalPropertiesClass putMapOfMapPropertyItem(String key, Map<String, String> mapOfMapPropertyItem) {
+    if (this.mapOfMapProperty == null) {
+      this.mapOfMapProperty = new HashMap<>();
+    }
+    this.mapOfMapProperty.put(key, mapOfMapPropertyItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class AdditionalPropertiesClass {\n");
+    
+    sb.append("    mapProperty: ").append(toIndentedString(mapProperty)).append("\n");
+    sb.append("    mapOfMapProperty: ").append(toIndentedString(mapOfMapProperty)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/AllOfWithSingleRef.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/AllOfWithSingleRef.java
new file mode 100644
index 00000000000..53c0cb73bf2
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/AllOfWithSingleRef.java
@@ -0,0 +1,126 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.openapitools.client.model.SingleRefType;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  AllOfWithSingleRef.JSON_PROPERTY_USERNAME,
+  AllOfWithSingleRef.JSON_PROPERTY_SINGLE_REF_TYPE
+})
+
+public class AllOfWithSingleRef  {
+  
+  public static final String JSON_PROPERTY_USERNAME = "username";
+  
+  private String username;
+
+  public static final String JSON_PROPERTY_SINGLE_REF_TYPE = "SingleRefType";
+  
+  private SingleRefType singleRefType;
+
+  /**
+   * Get username
+   * @return username
+   **/
+  @JsonProperty(JSON_PROPERTY_USERNAME)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getUsername() {
+    return username;
+  }
+
+  /**
+   * Set username
+   */
+  @JsonProperty(JSON_PROPERTY_USERNAME)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setUsername(String username) {
+    this.username = username;
+  }
+
+  public AllOfWithSingleRef username(String username) {
+    this.username = username;
+    return this;
+  }
+
+  /**
+   * Get singleRefType
+   * @return singleRefType
+   **/
+  @JsonProperty(JSON_PROPERTY_SINGLE_REF_TYPE)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public SingleRefType getSingleRefType() {
+    return singleRefType;
+  }
+
+  /**
+   * Set singleRefType
+   */
+  @JsonProperty(JSON_PROPERTY_SINGLE_REF_TYPE)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setSingleRefType(SingleRefType singleRefType) {
+    this.singleRefType = singleRefType;
+  }
+
+  public AllOfWithSingleRef singleRefType(SingleRefType singleRefType) {
+    this.singleRefType = singleRefType;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class AllOfWithSingleRef {\n");
+    
+    sb.append("    username: ").append(toIndentedString(username)).append("\n");
+    sb.append("    singleRefType: ").append(toIndentedString(singleRefType)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Animal.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Animal.java
new file mode 100644
index 00000000000..d1d133daa3f
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Animal.java
@@ -0,0 +1,138 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonSubTypes;
+import com.fasterxml.jackson.annotation.JsonTypeInfo;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  Animal.JSON_PROPERTY_CLASS_NAME,
+  Animal.JSON_PROPERTY_COLOR
+})
+
+@JsonIgnoreProperties(
+  value = "className", // ignore manually set className, it will be automatically generated by Jackson during serialization
+  allowSetters = true // allows the className to be set during deserialization
+)
+@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.PROPERTY, property = "className", visible = true)
+@JsonSubTypes({
+  @JsonSubTypes.Type(value = Cat.class, name = "CAT"),
+  @JsonSubTypes.Type(value = Dog.class, name = "DOG"),
+})
+
+public class Animal  {
+  
+  public static final String JSON_PROPERTY_CLASS_NAME = "className";
+  
+  private String className;
+
+  public static final String JSON_PROPERTY_COLOR = "color";
+  
+  private String color = "red";
+
+  /**
+   * Get className
+   * @return className
+   **/
+  @JsonProperty(JSON_PROPERTY_CLASS_NAME)
+  @JsonInclude(value = JsonInclude.Include.ALWAYS)
+  public String getClassName() {
+    return className;
+  }
+
+  /**
+   * Set className
+   */
+  @JsonProperty(JSON_PROPERTY_CLASS_NAME)
+  @JsonInclude(value = JsonInclude.Include.ALWAYS)
+  public void setClassName(String className) {
+    this.className = className;
+  }
+
+  public Animal className(String className) {
+    this.className = className;
+    return this;
+  }
+
+  /**
+   * Get color
+   * @return color
+   **/
+  @JsonProperty(JSON_PROPERTY_COLOR)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getColor() {
+    return color;
+  }
+
+  /**
+   * Set color
+   */
+  @JsonProperty(JSON_PROPERTY_COLOR)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setColor(String color) {
+    this.color = color;
+  }
+
+  public Animal color(String color) {
+    this.color = color;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Animal {\n");
+    
+    sb.append("    className: ").append(toIndentedString(className)).append("\n");
+    sb.append("    color: ").append(toIndentedString(color)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnly.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnly.java
new file mode 100644
index 00000000000..633f5951245
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnly.java
@@ -0,0 +1,107 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  ArrayOfArrayOfNumberOnly.JSON_PROPERTY_ARRAY_ARRAY_NUMBER
+})
+
+public class ArrayOfArrayOfNumberOnly  {
+  
+  public static final String JSON_PROPERTY_ARRAY_ARRAY_NUMBER = "ArrayArrayNumber";
+  
+  private List<List<BigDecimal>> arrayArrayNumber = null;
+
+  /**
+   * Get arrayArrayNumber
+   * @return arrayArrayNumber
+   **/
+  @JsonProperty(JSON_PROPERTY_ARRAY_ARRAY_NUMBER)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public List<List<BigDecimal>> getArrayArrayNumber() {
+    return arrayArrayNumber;
+  }
+
+  /**
+   * Set arrayArrayNumber
+   */
+  @JsonProperty(JSON_PROPERTY_ARRAY_ARRAY_NUMBER)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setArrayArrayNumber(List<List<BigDecimal>> arrayArrayNumber) {
+    this.arrayArrayNumber = arrayArrayNumber;
+  }
+
+  public ArrayOfArrayOfNumberOnly arrayArrayNumber(List<List<BigDecimal>> arrayArrayNumber) {
+    this.arrayArrayNumber = arrayArrayNumber;
+    return this;
+  }
+
+  public ArrayOfArrayOfNumberOnly addArrayArrayNumberItem(List<BigDecimal> arrayArrayNumberItem) {
+    if (this.arrayArrayNumber == null) {
+      this.arrayArrayNumber = new ArrayList<>();
+    }
+    this.arrayArrayNumber.add(arrayArrayNumberItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ArrayOfArrayOfNumberOnly {\n");
+    
+    sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ArrayOfNumberOnly.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ArrayOfNumberOnly.java
new file mode 100644
index 00000000000..eee630e931e
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ArrayOfNumberOnly.java
@@ -0,0 +1,107 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  ArrayOfNumberOnly.JSON_PROPERTY_ARRAY_NUMBER
+})
+
+public class ArrayOfNumberOnly  {
+  
+  public static final String JSON_PROPERTY_ARRAY_NUMBER = "ArrayNumber";
+  
+  private List<BigDecimal> arrayNumber = null;
+
+  /**
+   * Get arrayNumber
+   * @return arrayNumber
+   **/
+  @JsonProperty(JSON_PROPERTY_ARRAY_NUMBER)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public List<BigDecimal> getArrayNumber() {
+    return arrayNumber;
+  }
+
+  /**
+   * Set arrayNumber
+   */
+  @JsonProperty(JSON_PROPERTY_ARRAY_NUMBER)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setArrayNumber(List<BigDecimal> arrayNumber) {
+    this.arrayNumber = arrayNumber;
+  }
+
+  public ArrayOfNumberOnly arrayNumber(List<BigDecimal> arrayNumber) {
+    this.arrayNumber = arrayNumber;
+    return this;
+  }
+
+  public ArrayOfNumberOnly addArrayNumberItem(BigDecimal arrayNumberItem) {
+    if (this.arrayNumber == null) {
+      this.arrayNumber = new ArrayList<>();
+    }
+    this.arrayNumber.add(arrayNumberItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ArrayOfNumberOnly {\n");
+    
+    sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ArrayTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ArrayTest.java
new file mode 100644
index 00000000000..54969eb9ad6
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ArrayTest.java
@@ -0,0 +1,183 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.openapitools.client.model.ReadOnlyFirst;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  ArrayTest.JSON_PROPERTY_ARRAY_OF_STRING,
+  ArrayTest.JSON_PROPERTY_ARRAY_ARRAY_OF_INTEGER,
+  ArrayTest.JSON_PROPERTY_ARRAY_ARRAY_OF_MODEL
+})
+
+public class ArrayTest  {
+  
+  public static final String JSON_PROPERTY_ARRAY_OF_STRING = "array_of_string";
+  
+  private List<String> arrayOfString = null;
+
+  public static final String JSON_PROPERTY_ARRAY_ARRAY_OF_INTEGER = "array_array_of_integer";
+  
+  private List<List<Long>> arrayArrayOfInteger = null;
+
+  public static final String JSON_PROPERTY_ARRAY_ARRAY_OF_MODEL = "array_array_of_model";
+  
+  private List<List<ReadOnlyFirst>> arrayArrayOfModel = null;
+
+  /**
+   * Get arrayOfString
+   * @return arrayOfString
+   **/
+  @JsonProperty(JSON_PROPERTY_ARRAY_OF_STRING)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public List<String> getArrayOfString() {
+    return arrayOfString;
+  }
+
+  /**
+   * Set arrayOfString
+   */
+  @JsonProperty(JSON_PROPERTY_ARRAY_OF_STRING)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setArrayOfString(List<String> arrayOfString) {
+    this.arrayOfString = arrayOfString;
+  }
+
+  public ArrayTest arrayOfString(List<String> arrayOfString) {
+    this.arrayOfString = arrayOfString;
+    return this;
+  }
+
+  public ArrayTest addArrayOfStringItem(String arrayOfStringItem) {
+    if (this.arrayOfString == null) {
+      this.arrayOfString = new ArrayList<>();
+    }
+    this.arrayOfString.add(arrayOfStringItem);
+    return this;
+  }
+
+  /**
+   * Get arrayArrayOfInteger
+   * @return arrayArrayOfInteger
+   **/
+  @JsonProperty(JSON_PROPERTY_ARRAY_ARRAY_OF_INTEGER)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public List<List<Long>> getArrayArrayOfInteger() {
+    return arrayArrayOfInteger;
+  }
+
+  /**
+   * Set arrayArrayOfInteger
+   */
+  @JsonProperty(JSON_PROPERTY_ARRAY_ARRAY_OF_INTEGER)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setArrayArrayOfInteger(List<List<Long>> arrayArrayOfInteger) {
+    this.arrayArrayOfInteger = arrayArrayOfInteger;
+  }
+
+  public ArrayTest arrayArrayOfInteger(List<List<Long>> arrayArrayOfInteger) {
+    this.arrayArrayOfInteger = arrayArrayOfInteger;
+    return this;
+  }
+
+  public ArrayTest addArrayArrayOfIntegerItem(List<Long> arrayArrayOfIntegerItem) {
+    if (this.arrayArrayOfInteger == null) {
+      this.arrayArrayOfInteger = new ArrayList<>();
+    }
+    this.arrayArrayOfInteger.add(arrayArrayOfIntegerItem);
+    return this;
+  }
+
+  /**
+   * Get arrayArrayOfModel
+   * @return arrayArrayOfModel
+   **/
+  @JsonProperty(JSON_PROPERTY_ARRAY_ARRAY_OF_MODEL)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
+    return arrayArrayOfModel;
+  }
+
+  /**
+   * Set arrayArrayOfModel
+   */
+  @JsonProperty(JSON_PROPERTY_ARRAY_ARRAY_OF_MODEL)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setArrayArrayOfModel(List<List<ReadOnlyFirst>> arrayArrayOfModel) {
+    this.arrayArrayOfModel = arrayArrayOfModel;
+  }
+
+  public ArrayTest arrayArrayOfModel(List<List<ReadOnlyFirst>> arrayArrayOfModel) {
+    this.arrayArrayOfModel = arrayArrayOfModel;
+    return this;
+  }
+
+  public ArrayTest addArrayArrayOfModelItem(List<ReadOnlyFirst> arrayArrayOfModelItem) {
+    if (this.arrayArrayOfModel == null) {
+      this.arrayArrayOfModel = new ArrayList<>();
+    }
+    this.arrayArrayOfModel.add(arrayArrayOfModelItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ArrayTest {\n");
+    
+    sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
+    sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
+    sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Capitalization.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Capitalization.java
new file mode 100644
index 00000000000..5c6131e7761
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Capitalization.java
@@ -0,0 +1,248 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  Capitalization.JSON_PROPERTY_SMALL_CAMEL,
+  Capitalization.JSON_PROPERTY_CAPITAL_CAMEL,
+  Capitalization.JSON_PROPERTY_SMALL_SNAKE,
+  Capitalization.JSON_PROPERTY_CAPITAL_SNAKE,
+  Capitalization.JSON_PROPERTY_SC_A_E_T_H_FLOW_POINTS,
+  Capitalization.JSON_PROPERTY_A_T_T_N_A_M_E
+})
+
+public class Capitalization  {
+  
+  public static final String JSON_PROPERTY_SMALL_CAMEL = "smallCamel";
+  
+  private String smallCamel;
+
+  public static final String JSON_PROPERTY_CAPITAL_CAMEL = "CapitalCamel";
+  
+  private String capitalCamel;
+
+  public static final String JSON_PROPERTY_SMALL_SNAKE = "small_Snake";
+  
+  private String smallSnake;
+
+  public static final String JSON_PROPERTY_CAPITAL_SNAKE = "Capital_Snake";
+  
+  private String capitalSnake;
+
+  public static final String JSON_PROPERTY_SC_A_E_T_H_FLOW_POINTS = "SCA_ETH_Flow_Points";
+  
+  private String scAETHFlowPoints;
+
+  public static final String JSON_PROPERTY_A_T_T_N_A_M_E = "ATT_NAME";
+ /**
+  * Name of the pet 
+  */
+  
+  private String ATT_NAME;
+
+  /**
+   * Get smallCamel
+   * @return smallCamel
+   **/
+  @JsonProperty(JSON_PROPERTY_SMALL_CAMEL)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getSmallCamel() {
+    return smallCamel;
+  }
+
+  /**
+   * Set smallCamel
+   */
+  @JsonProperty(JSON_PROPERTY_SMALL_CAMEL)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setSmallCamel(String smallCamel) {
+    this.smallCamel = smallCamel;
+  }
+
+  public Capitalization smallCamel(String smallCamel) {
+    this.smallCamel = smallCamel;
+    return this;
+  }
+
+  /**
+   * Get capitalCamel
+   * @return capitalCamel
+   **/
+  @JsonProperty(JSON_PROPERTY_CAPITAL_CAMEL)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getCapitalCamel() {
+    return capitalCamel;
+  }
+
+  /**
+   * Set capitalCamel
+   */
+  @JsonProperty(JSON_PROPERTY_CAPITAL_CAMEL)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setCapitalCamel(String capitalCamel) {
+    this.capitalCamel = capitalCamel;
+  }
+
+  public Capitalization capitalCamel(String capitalCamel) {
+    this.capitalCamel = capitalCamel;
+    return this;
+  }
+
+  /**
+   * Get smallSnake
+   * @return smallSnake
+   **/
+  @JsonProperty(JSON_PROPERTY_SMALL_SNAKE)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getSmallSnake() {
+    return smallSnake;
+  }
+
+  /**
+   * Set smallSnake
+   */
+  @JsonProperty(JSON_PROPERTY_SMALL_SNAKE)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setSmallSnake(String smallSnake) {
+    this.smallSnake = smallSnake;
+  }
+
+  public Capitalization smallSnake(String smallSnake) {
+    this.smallSnake = smallSnake;
+    return this;
+  }
+
+  /**
+   * Get capitalSnake
+   * @return capitalSnake
+   **/
+  @JsonProperty(JSON_PROPERTY_CAPITAL_SNAKE)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getCapitalSnake() {
+    return capitalSnake;
+  }
+
+  /**
+   * Set capitalSnake
+   */
+  @JsonProperty(JSON_PROPERTY_CAPITAL_SNAKE)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setCapitalSnake(String capitalSnake) {
+    this.capitalSnake = capitalSnake;
+  }
+
+  public Capitalization capitalSnake(String capitalSnake) {
+    this.capitalSnake = capitalSnake;
+    return this;
+  }
+
+  /**
+   * Get scAETHFlowPoints
+   * @return scAETHFlowPoints
+   **/
+  @JsonProperty(JSON_PROPERTY_SC_A_E_T_H_FLOW_POINTS)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getScAETHFlowPoints() {
+    return scAETHFlowPoints;
+  }
+
+  /**
+   * Set scAETHFlowPoints
+   */
+  @JsonProperty(JSON_PROPERTY_SC_A_E_T_H_FLOW_POINTS)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setScAETHFlowPoints(String scAETHFlowPoints) {
+    this.scAETHFlowPoints = scAETHFlowPoints;
+  }
+
+  public Capitalization scAETHFlowPoints(String scAETHFlowPoints) {
+    this.scAETHFlowPoints = scAETHFlowPoints;
+    return this;
+  }
+
+  /**
+   * Name of the pet 
+   * @return ATT_NAME
+   **/
+  @JsonProperty(JSON_PROPERTY_A_T_T_N_A_M_E)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getATTNAME() {
+    return ATT_NAME;
+  }
+
+  /**
+   * Set ATT_NAME
+   */
+  @JsonProperty(JSON_PROPERTY_A_T_T_N_A_M_E)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setATTNAME(String ATT_NAME) {
+    this.ATT_NAME = ATT_NAME;
+  }
+
+  public Capitalization ATT_NAME(String ATT_NAME) {
+    this.ATT_NAME = ATT_NAME;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Capitalization {\n");
+    
+    sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
+    sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
+    sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
+    sb.append("    capitalSnake: ").append(toIndentedString(capitalSnake)).append("\n");
+    sb.append("    scAETHFlowPoints: ").append(toIndentedString(scAETHFlowPoints)).append("\n");
+    sb.append("    ATT_NAME: ").append(toIndentedString(ATT_NAME)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Cat.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Cat.java
new file mode 100644
index 00000000000..f8ee048670a
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Cat.java
@@ -0,0 +1,105 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonSubTypes;
+import com.fasterxml.jackson.annotation.JsonTypeInfo;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.openapitools.client.model.Animal;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  Cat.JSON_PROPERTY_DECLAWED
+})
+
+@JsonIgnoreProperties(
+  value = "className", // ignore manually set className, it will be automatically generated by Jackson during serialization
+  allowSetters = true // allows the className to be set during deserialization
+)
+@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.PROPERTY, property = "className", visible = true)
+
+public class Cat extends Animal {
+  
+  public static final String JSON_PROPERTY_DECLAWED = "declawed";
+  
+  private Boolean declawed;
+
+  /**
+   * Get declawed
+   * @return declawed
+   **/
+  @JsonProperty(JSON_PROPERTY_DECLAWED)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public Boolean getDeclawed() {
+    return declawed;
+  }
+
+  /**
+   * Set declawed
+   */
+  @JsonProperty(JSON_PROPERTY_DECLAWED)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setDeclawed(Boolean declawed) {
+    this.declawed = declawed;
+  }
+
+  public Cat declawed(Boolean declawed) {
+    this.declawed = declawed;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Cat {\n");
+    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+    sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Category.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Category.java
index 0b66df25dc9..28e0277c8ae 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Category.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Category.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -28,9 +28,6 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
   Category.JSON_PROPERTY_ID,
   Category.JSON_PROPERTY_NAME
 })
-/**
-  * A category for a pet
-  */
 
 public class Category  {
   
@@ -40,7 +37,7 @@ public class Category  {
 
   public static final String JSON_PROPERTY_NAME = "name";
   
-  private String name;
+  private String name = "default-name";
 
   /**
    * Get id
@@ -71,7 +68,7 @@ public class Category  {
    * @return name
    **/
   @JsonProperty(JSON_PROPERTY_NAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  @JsonInclude(value = JsonInclude.Include.ALWAYS)
   public String getName() {
     return name;
   }
@@ -80,7 +77,7 @@ public class Category  {
    * Set name
    */
   @JsonProperty(JSON_PROPERTY_NAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  @JsonInclude(value = JsonInclude.Include.ALWAYS)
   public void setName(String name) {
     this.name = name;
   }
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ChildWithNullable.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ChildWithNullable.java
new file mode 100644
index 00000000000..4c315942c2c
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ChildWithNullable.java
@@ -0,0 +1,105 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonSubTypes;
+import com.fasterxml.jackson.annotation.JsonTypeInfo;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.openapitools.client.model.ParentWithNullable;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  ChildWithNullable.JSON_PROPERTY_OTHER_PROPERTY
+})
+
+@JsonIgnoreProperties(
+  value = "type", // ignore manually set type, it will be automatically generated by Jackson during serialization
+  allowSetters = true // allows the type to be set during deserialization
+)
+@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.PROPERTY, property = "type", visible = true)
+
+public class ChildWithNullable extends ParentWithNullable {
+  
+  public static final String JSON_PROPERTY_OTHER_PROPERTY = "otherProperty";
+  
+  private String otherProperty;
+
+  /**
+   * Get otherProperty
+   * @return otherProperty
+   **/
+  @JsonProperty(JSON_PROPERTY_OTHER_PROPERTY)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getOtherProperty() {
+    return otherProperty;
+  }
+
+  /**
+   * Set otherProperty
+   */
+  @JsonProperty(JSON_PROPERTY_OTHER_PROPERTY)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setOtherProperty(String otherProperty) {
+    this.otherProperty = otherProperty;
+  }
+
+  public ChildWithNullable otherProperty(String otherProperty) {
+    this.otherProperty = otherProperty;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ChildWithNullable {\n");
+    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+    sb.append("    otherProperty: ").append(toIndentedString(otherProperty)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ClassModel.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ClassModel.java
new file mode 100644
index 00000000000..5001a36e341
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ClassModel.java
@@ -0,0 +1,98 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  ClassModel.JSON_PROPERTY_PROPERTY_CLASS
+})
+/**
+  * Model for testing model with \"_class\" property
+  */
+
+public class ClassModel  {
+  
+  public static final String JSON_PROPERTY_PROPERTY_CLASS = "_class";
+  
+  private String propertyClass;
+
+  /**
+   * Get propertyClass
+   * @return propertyClass
+   **/
+  @JsonProperty(JSON_PROPERTY_PROPERTY_CLASS)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getPropertyClass() {
+    return propertyClass;
+  }
+
+  /**
+   * Set propertyClass
+   */
+  @JsonProperty(JSON_PROPERTY_PROPERTY_CLASS)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setPropertyClass(String propertyClass) {
+    this.propertyClass = propertyClass;
+  }
+
+  public ClassModel propertyClass(String propertyClass) {
+    this.propertyClass = propertyClass;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ClassModel {\n");
+    
+    sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Client.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Client.java
new file mode 100644
index 00000000000..74256bdbc46
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Client.java
@@ -0,0 +1,95 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  Client.JSON_PROPERTY_CLIENT
+})
+
+public class Client  {
+  
+  public static final String JSON_PROPERTY_CLIENT = "client";
+  
+  private String client;
+
+  /**
+   * Get client
+   * @return client
+   **/
+  @JsonProperty(JSON_PROPERTY_CLIENT)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getClient() {
+    return client;
+  }
+
+  /**
+   * Set client
+   */
+  @JsonProperty(JSON_PROPERTY_CLIENT)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setClient(String client) {
+    this.client = client;
+  }
+
+  public Client client(String client) {
+    this.client = client;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Client {\n");
+    
+    sb.append("    client: ").append(toIndentedString(client)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/DeprecatedObject.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/DeprecatedObject.java
new file mode 100644
index 00000000000..84f363f4280
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/DeprecatedObject.java
@@ -0,0 +1,95 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  DeprecatedObject.JSON_PROPERTY_NAME
+})
+
+public class DeprecatedObject  {
+  
+  public static final String JSON_PROPERTY_NAME = "name";
+  
+  private String name;
+
+  /**
+   * Get name
+   * @return name
+   **/
+  @JsonProperty(JSON_PROPERTY_NAME)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getName() {
+    return name;
+  }
+
+  /**
+   * Set name
+   */
+  @JsonProperty(JSON_PROPERTY_NAME)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setName(String name) {
+    this.name = name;
+  }
+
+  public DeprecatedObject name(String name) {
+    this.name = name;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class DeprecatedObject {\n");
+    
+    sb.append("    name: ").append(toIndentedString(name)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Dog.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Dog.java
new file mode 100644
index 00000000000..a40c4f416e0
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Dog.java
@@ -0,0 +1,105 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonSubTypes;
+import com.fasterxml.jackson.annotation.JsonTypeInfo;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.openapitools.client.model.Animal;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  Dog.JSON_PROPERTY_BREED
+})
+
+@JsonIgnoreProperties(
+  value = "className", // ignore manually set className, it will be automatically generated by Jackson during serialization
+  allowSetters = true // allows the className to be set during deserialization
+)
+@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.PROPERTY, property = "className", visible = true)
+
+public class Dog extends Animal {
+  
+  public static final String JSON_PROPERTY_BREED = "breed";
+  
+  private String breed;
+
+  /**
+   * Get breed
+   * @return breed
+   **/
+  @JsonProperty(JSON_PROPERTY_BREED)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getBreed() {
+    return breed;
+  }
+
+  /**
+   * Set breed
+   */
+  @JsonProperty(JSON_PROPERTY_BREED)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setBreed(String breed) {
+    this.breed = breed;
+  }
+
+  public Dog breed(String breed) {
+    this.breed = breed;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Dog {\n");
+    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+    sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/EnumArrays.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/EnumArrays.java
new file mode 100644
index 00000000000..4c3728a3d09
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/EnumArrays.java
@@ -0,0 +1,200 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  EnumArrays.JSON_PROPERTY_JUST_SYMBOL,
+  EnumArrays.JSON_PROPERTY_ARRAY_ENUM
+})
+
+public class EnumArrays  {
+  
+  public enum JustSymbolEnum {
+
+    GREATER_THAN_OR_EQUAL_TO(String.valueOf(">=")), DOLLAR(String.valueOf("$"));
+
+
+    String value;
+
+    JustSymbolEnum (String v) {
+        value = v;
+    }
+
+    @JsonValue
+    public String value() {
+        return value;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(value);
+    }
+
+    @JsonCreator
+        public static JustSymbolEnum fromValue(String value) {
+            for (JustSymbolEnum b : JustSymbolEnum.values()) {
+                if (b.value.equals(value)) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        }
+  }
+
+  public static final String JSON_PROPERTY_JUST_SYMBOL = "just_symbol";
+  
+  private JustSymbolEnum justSymbol;
+
+  public enum ArrayEnumEnum {
+
+    FISH(String.valueOf("fish")), CRAB(String.valueOf("crab"));
+
+
+    String value;
+
+    ArrayEnumEnum (String v) {
+        value = v;
+    }
+
+    @JsonValue
+    public String value() {
+        return value;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(value);
+    }
+
+    @JsonCreator
+        public static ArrayEnumEnum fromValue(String value) {
+            for (ArrayEnumEnum b : ArrayEnumEnum.values()) {
+                if (b.value.equals(value)) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        }
+  }
+
+  public static final String JSON_PROPERTY_ARRAY_ENUM = "array_enum";
+  
+  private List<ArrayEnumEnum> arrayEnum = null;
+
+  /**
+   * Get justSymbol
+   * @return justSymbol
+   **/
+  @JsonProperty(JSON_PROPERTY_JUST_SYMBOL)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public JustSymbolEnum getJustSymbol() {
+    return justSymbol;
+  }
+
+  /**
+   * Set justSymbol
+   */
+  @JsonProperty(JSON_PROPERTY_JUST_SYMBOL)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setJustSymbol(JustSymbolEnum justSymbol) {
+    this.justSymbol = justSymbol;
+  }
+
+  public EnumArrays justSymbol(JustSymbolEnum justSymbol) {
+    this.justSymbol = justSymbol;
+    return this;
+  }
+
+  /**
+   * Get arrayEnum
+   * @return arrayEnum
+   **/
+  @JsonProperty(JSON_PROPERTY_ARRAY_ENUM)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public List<ArrayEnumEnum> getArrayEnum() {
+    return arrayEnum;
+  }
+
+  /**
+   * Set arrayEnum
+   */
+  @JsonProperty(JSON_PROPERTY_ARRAY_ENUM)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setArrayEnum(List<ArrayEnumEnum> arrayEnum) {
+    this.arrayEnum = arrayEnum;
+  }
+
+  public EnumArrays arrayEnum(List<ArrayEnumEnum> arrayEnum) {
+    this.arrayEnum = arrayEnum;
+    return this;
+  }
+
+  public EnumArrays addArrayEnumItem(ArrayEnumEnum arrayEnumItem) {
+    if (this.arrayEnum == null) {
+      this.arrayEnum = new ArrayList<>();
+    }
+    this.arrayEnum.add(arrayEnumItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class EnumArrays {\n");
+    
+    sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
+    sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/EnumClass.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/EnumClass.java
new file mode 100644
index 00000000000..bfd8dd92cb1
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/EnumClass.java
@@ -0,0 +1,58 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+
+/**
+ * Gets or Sets EnumClass
+ */
+public enum EnumClass {
+  
+  _ABC("_abc"),
+  
+  _EFG("-efg"),
+  
+  _XYZ_("(xyz)");
+
+  private String value;
+
+  EnumClass(String value) {
+    this.value = value;
+  }
+
+  @Override
+  @JsonValue
+  public String toString() {
+    return String.valueOf(value);
+  }
+
+  @JsonCreator
+  public static EnumClass fromValue(String text) {
+    for (EnumClass b : EnumClass.values()) {
+      if (String.valueOf(b.value).equals(text)) {
+        return b;
+      }
+    }
+    throw new IllegalArgumentException("Unexpected value '" + text + "'");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/EnumTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/EnumTest.java
new file mode 100644
index 00000000000..c896035c6e6
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/EnumTest.java
@@ -0,0 +1,438 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.openapitools.client.model.OuterEnum;
+import org.openapitools.client.model.OuterEnumDefaultValue;
+import org.openapitools.client.model.OuterEnumInteger;
+import org.openapitools.client.model.OuterEnumIntegerDefaultValue;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  EnumTest.JSON_PROPERTY_ENUM_STRING,
+  EnumTest.JSON_PROPERTY_ENUM_STRING_REQUIRED,
+  EnumTest.JSON_PROPERTY_ENUM_INTEGER,
+  EnumTest.JSON_PROPERTY_ENUM_NUMBER,
+  EnumTest.JSON_PROPERTY_OUTER_ENUM,
+  EnumTest.JSON_PROPERTY_OUTER_ENUM_INTEGER,
+  EnumTest.JSON_PROPERTY_OUTER_ENUM_DEFAULT_VALUE,
+  EnumTest.JSON_PROPERTY_OUTER_ENUM_INTEGER_DEFAULT_VALUE
+})
+@JsonTypeName("Enum_Test")
+
+public class EnumTest  {
+  
+  public enum EnumStringEnum {
+
+    UPPER(String.valueOf("UPPER")), LOWER(String.valueOf("lower")), EMPTY(String.valueOf(""));
+
+
+    String value;
+
+    EnumStringEnum (String v) {
+        value = v;
+    }
+
+    @JsonValue
+    public String value() {
+        return value;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(value);
+    }
+
+    @JsonCreator
+        public static EnumStringEnum fromValue(String value) {
+            for (EnumStringEnum b : EnumStringEnum.values()) {
+                if (b.value.equals(value)) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        }
+  }
+
+  public static final String JSON_PROPERTY_ENUM_STRING = "enum_string";
+  
+  private EnumStringEnum enumString;
+
+  public enum EnumStringRequiredEnum {
+
+    UPPER(String.valueOf("UPPER")), LOWER(String.valueOf("lower")), EMPTY(String.valueOf(""));
+
+
+    String value;
+
+    EnumStringRequiredEnum (String v) {
+        value = v;
+    }
+
+    @JsonValue
+    public String value() {
+        return value;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(value);
+    }
+
+    @JsonCreator
+        public static EnumStringRequiredEnum fromValue(String value) {
+            for (EnumStringRequiredEnum b : EnumStringRequiredEnum.values()) {
+                if (b.value.equals(value)) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        }
+  }
+
+  public static final String JSON_PROPERTY_ENUM_STRING_REQUIRED = "enum_string_required";
+  
+  private EnumStringRequiredEnum enumStringRequired;
+
+  public enum EnumIntegerEnum {
+
+    NUMBER_1(Integer.valueOf(1)), NUMBER_MINUS_1(Integer.valueOf(-1));
+
+
+    Integer value;
+
+    EnumIntegerEnum (Integer v) {
+        value = v;
+    }
+
+    @JsonValue
+    public Integer value() {
+        return value;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(value);
+    }
+
+    @JsonCreator
+        public static EnumIntegerEnum fromValue(Integer value) {
+            for (EnumIntegerEnum b : EnumIntegerEnum.values()) {
+                if (b.value.equals(value)) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        }
+  }
+
+  public static final String JSON_PROPERTY_ENUM_INTEGER = "enum_integer";
+  
+  private EnumIntegerEnum enumInteger;
+
+  public enum EnumNumberEnum {
+
+    NUMBER_1_DOT_1(Double.valueOf(1.1)), NUMBER_MINUS_1_DOT_2(Double.valueOf(-1.2));
+
+
+    Double value;
+
+    EnumNumberEnum (Double v) {
+        value = v;
+    }
+
+    @JsonValue
+    public Double value() {
+        return value;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(value);
+    }
+
+    @JsonCreator
+        public static EnumNumberEnum fromValue(Double value) {
+            for (EnumNumberEnum b : EnumNumberEnum.values()) {
+                if (b.value.equals(value)) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        }
+  }
+
+  public static final String JSON_PROPERTY_ENUM_NUMBER = "enum_number";
+  
+  private EnumNumberEnum enumNumber;
+
+  public static final String JSON_PROPERTY_OUTER_ENUM = "outerEnum";
+  
+  private OuterEnum outerEnum;
+
+  public static final String JSON_PROPERTY_OUTER_ENUM_INTEGER = "outerEnumInteger";
+  
+  private OuterEnumInteger outerEnumInteger;
+
+  public static final String JSON_PROPERTY_OUTER_ENUM_DEFAULT_VALUE = "outerEnumDefaultValue";
+  
+  private OuterEnumDefaultValue outerEnumDefaultValue = OuterEnumDefaultValue.PLACED;
+
+  public static final String JSON_PROPERTY_OUTER_ENUM_INTEGER_DEFAULT_VALUE = "outerEnumIntegerDefaultValue";
+  
+  private OuterEnumIntegerDefaultValue outerEnumIntegerDefaultValue = OuterEnumIntegerDefaultValue.NUMBER_0;
+
+  /**
+   * Get enumString
+   * @return enumString
+   **/
+  @JsonProperty(JSON_PROPERTY_ENUM_STRING)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public EnumStringEnum getEnumString() {
+    return enumString;
+  }
+
+  /**
+   * Set enumString
+   */
+  @JsonProperty(JSON_PROPERTY_ENUM_STRING)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setEnumString(EnumStringEnum enumString) {
+    this.enumString = enumString;
+  }
+
+  public EnumTest enumString(EnumStringEnum enumString) {
+    this.enumString = enumString;
+    return this;
+  }
+
+  /**
+   * Get enumStringRequired
+   * @return enumStringRequired
+   **/
+  @JsonProperty(JSON_PROPERTY_ENUM_STRING_REQUIRED)
+  @JsonInclude(value = JsonInclude.Include.ALWAYS)
+  public EnumStringRequiredEnum getEnumStringRequired() {
+    return enumStringRequired;
+  }
+
+  /**
+   * Set enumStringRequired
+   */
+  @JsonProperty(JSON_PROPERTY_ENUM_STRING_REQUIRED)
+  @JsonInclude(value = JsonInclude.Include.ALWAYS)
+  public void setEnumStringRequired(EnumStringRequiredEnum enumStringRequired) {
+    this.enumStringRequired = enumStringRequired;
+  }
+
+  public EnumTest enumStringRequired(EnumStringRequiredEnum enumStringRequired) {
+    this.enumStringRequired = enumStringRequired;
+    return this;
+  }
+
+  /**
+   * Get enumInteger
+   * @return enumInteger
+   **/
+  @JsonProperty(JSON_PROPERTY_ENUM_INTEGER)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public EnumIntegerEnum getEnumInteger() {
+    return enumInteger;
+  }
+
+  /**
+   * Set enumInteger
+   */
+  @JsonProperty(JSON_PROPERTY_ENUM_INTEGER)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setEnumInteger(EnumIntegerEnum enumInteger) {
+    this.enumInteger = enumInteger;
+  }
+
+  public EnumTest enumInteger(EnumIntegerEnum enumInteger) {
+    this.enumInteger = enumInteger;
+    return this;
+  }
+
+  /**
+   * Get enumNumber
+   * @return enumNumber
+   **/
+  @JsonProperty(JSON_PROPERTY_ENUM_NUMBER)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public EnumNumberEnum getEnumNumber() {
+    return enumNumber;
+  }
+
+  /**
+   * Set enumNumber
+   */
+  @JsonProperty(JSON_PROPERTY_ENUM_NUMBER)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setEnumNumber(EnumNumberEnum enumNumber) {
+    this.enumNumber = enumNumber;
+  }
+
+  public EnumTest enumNumber(EnumNumberEnum enumNumber) {
+    this.enumNumber = enumNumber;
+    return this;
+  }
+
+  /**
+   * Get outerEnum
+   * @return outerEnum
+   **/
+  @JsonProperty(JSON_PROPERTY_OUTER_ENUM)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public OuterEnum getOuterEnum() {
+    return outerEnum;
+  }
+
+  /**
+   * Set outerEnum
+   */
+  @JsonProperty(JSON_PROPERTY_OUTER_ENUM)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setOuterEnum(OuterEnum outerEnum) {
+    this.outerEnum = outerEnum;
+  }
+
+  public EnumTest outerEnum(OuterEnum outerEnum) {
+    this.outerEnum = outerEnum;
+    return this;
+  }
+
+  /**
+   * Get outerEnumInteger
+   * @return outerEnumInteger
+   **/
+  @JsonProperty(JSON_PROPERTY_OUTER_ENUM_INTEGER)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public OuterEnumInteger getOuterEnumInteger() {
+    return outerEnumInteger;
+  }
+
+  /**
+   * Set outerEnumInteger
+   */
+  @JsonProperty(JSON_PROPERTY_OUTER_ENUM_INTEGER)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setOuterEnumInteger(OuterEnumInteger outerEnumInteger) {
+    this.outerEnumInteger = outerEnumInteger;
+  }
+
+  public EnumTest outerEnumInteger(OuterEnumInteger outerEnumInteger) {
+    this.outerEnumInteger = outerEnumInteger;
+    return this;
+  }
+
+  /**
+   * Get outerEnumDefaultValue
+   * @return outerEnumDefaultValue
+   **/
+  @JsonProperty(JSON_PROPERTY_OUTER_ENUM_DEFAULT_VALUE)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public OuterEnumDefaultValue getOuterEnumDefaultValue() {
+    return outerEnumDefaultValue;
+  }
+
+  /**
+   * Set outerEnumDefaultValue
+   */
+  @JsonProperty(JSON_PROPERTY_OUTER_ENUM_DEFAULT_VALUE)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setOuterEnumDefaultValue(OuterEnumDefaultValue outerEnumDefaultValue) {
+    this.outerEnumDefaultValue = outerEnumDefaultValue;
+  }
+
+  public EnumTest outerEnumDefaultValue(OuterEnumDefaultValue outerEnumDefaultValue) {
+    this.outerEnumDefaultValue = outerEnumDefaultValue;
+    return this;
+  }
+
+  /**
+   * Get outerEnumIntegerDefaultValue
+   * @return outerEnumIntegerDefaultValue
+   **/
+  @JsonProperty(JSON_PROPERTY_OUTER_ENUM_INTEGER_DEFAULT_VALUE)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public OuterEnumIntegerDefaultValue getOuterEnumIntegerDefaultValue() {
+    return outerEnumIntegerDefaultValue;
+  }
+
+  /**
+   * Set outerEnumIntegerDefaultValue
+   */
+  @JsonProperty(JSON_PROPERTY_OUTER_ENUM_INTEGER_DEFAULT_VALUE)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setOuterEnumIntegerDefaultValue(OuterEnumIntegerDefaultValue outerEnumIntegerDefaultValue) {
+    this.outerEnumIntegerDefaultValue = outerEnumIntegerDefaultValue;
+  }
+
+  public EnumTest outerEnumIntegerDefaultValue(OuterEnumIntegerDefaultValue outerEnumIntegerDefaultValue) {
+    this.outerEnumIntegerDefaultValue = outerEnumIntegerDefaultValue;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class EnumTest {\n");
+    
+    sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
+    sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
+    sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
+    sb.append("    enumNumber: ").append(toIndentedString(enumNumber)).append("\n");
+    sb.append("    outerEnum: ").append(toIndentedString(outerEnum)).append("\n");
+    sb.append("    outerEnumInteger: ").append(toIndentedString(outerEnumInteger)).append("\n");
+    sb.append("    outerEnumDefaultValue: ").append(toIndentedString(outerEnumDefaultValue)).append("\n");
+    sb.append("    outerEnumIntegerDefaultValue: ").append(toIndentedString(outerEnumIntegerDefaultValue)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/FakeBigDecimalMap200Response.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/FakeBigDecimalMap200Response.java
new file mode 100644
index 00000000000..9229df6b454
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/FakeBigDecimalMap200Response.java
@@ -0,0 +1,137 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.math.BigDecimal;
+import java.util.HashMap;
+import java.util.Map;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  FakeBigDecimalMap200Response.JSON_PROPERTY_SOME_ID,
+  FakeBigDecimalMap200Response.JSON_PROPERTY_SOME_MAP
+})
+@JsonTypeName("fakeBigDecimalMap_200_response")
+
+public class FakeBigDecimalMap200Response  {
+  
+  public static final String JSON_PROPERTY_SOME_ID = "someId";
+  
+  private BigDecimal someId;
+
+  public static final String JSON_PROPERTY_SOME_MAP = "someMap";
+  
+  private Map<String, BigDecimal> someMap = null;
+
+  /**
+   * Get someId
+   * @return someId
+   **/
+  @JsonProperty(JSON_PROPERTY_SOME_ID)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public BigDecimal getSomeId() {
+    return someId;
+  }
+
+  /**
+   * Set someId
+   */
+  @JsonProperty(JSON_PROPERTY_SOME_ID)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setSomeId(BigDecimal someId) {
+    this.someId = someId;
+  }
+
+  public FakeBigDecimalMap200Response someId(BigDecimal someId) {
+    this.someId = someId;
+    return this;
+  }
+
+  /**
+   * Get someMap
+   * @return someMap
+   **/
+  @JsonProperty(JSON_PROPERTY_SOME_MAP)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public Map<String, BigDecimal> getSomeMap() {
+    return someMap;
+  }
+
+  /**
+   * Set someMap
+   */
+  @JsonProperty(JSON_PROPERTY_SOME_MAP)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setSomeMap(Map<String, BigDecimal> someMap) {
+    this.someMap = someMap;
+  }
+
+  public FakeBigDecimalMap200Response someMap(Map<String, BigDecimal> someMap) {
+    this.someMap = someMap;
+    return this;
+  }
+
+  public FakeBigDecimalMap200Response putSomeMapItem(String key, BigDecimal someMapItem) {
+    if (this.someMap == null) {
+      this.someMap = new HashMap<>();
+    }
+    this.someMap.put(key, someMapItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class FakeBigDecimalMap200Response {\n");
+    
+    sb.append("    someId: ").append(toIndentedString(someId)).append("\n");
+    sb.append("    someMap: ").append(toIndentedString(someMap)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
new file mode 100644
index 00000000000..18dd0007593
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
@@ -0,0 +1,137 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.openapitools.client.model.ModelFile;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  FileSchemaTestClass.JSON_PROPERTY_FILE,
+  FileSchemaTestClass.JSON_PROPERTY_FILES
+})
+
+public class FileSchemaTestClass  {
+  
+  public static final String JSON_PROPERTY_FILE = "file";
+  
+  private ModelFile _file;
+
+  public static final String JSON_PROPERTY_FILES = "files";
+  
+  private List<ModelFile> files = null;
+
+  /**
+   * Get _file
+   * @return _file
+   **/
+  @JsonProperty(JSON_PROPERTY_FILE)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public ModelFile getFile() {
+    return _file;
+  }
+
+  /**
+   * Set _file
+   */
+  @JsonProperty(JSON_PROPERTY_FILE)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setFile(ModelFile _file) {
+    this._file = _file;
+  }
+
+  public FileSchemaTestClass _file(ModelFile _file) {
+    this._file = _file;
+    return this;
+  }
+
+  /**
+   * Get files
+   * @return files
+   **/
+  @JsonProperty(JSON_PROPERTY_FILES)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public List<ModelFile> getFiles() {
+    return files;
+  }
+
+  /**
+   * Set files
+   */
+  @JsonProperty(JSON_PROPERTY_FILES)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setFiles(List<ModelFile> files) {
+    this.files = files;
+  }
+
+  public FileSchemaTestClass files(List<ModelFile> files) {
+    this.files = files;
+    return this;
+  }
+
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
+    if (this.files == null) {
+      this.files = new ArrayList<>();
+    }
+    this.files.add(filesItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class FileSchemaTestClass {\n");
+    
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
+    sb.append("    files: ").append(toIndentedString(files)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Foo.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Foo.java
new file mode 100644
index 00000000000..5a4027297bc
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Foo.java
@@ -0,0 +1,95 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  Foo.JSON_PROPERTY_BAR
+})
+
+public class Foo  {
+  
+  public static final String JSON_PROPERTY_BAR = "bar";
+  
+  private String bar = "bar";
+
+  /**
+   * Get bar
+   * @return bar
+   **/
+  @JsonProperty(JSON_PROPERTY_BAR)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getBar() {
+    return bar;
+  }
+
+  /**
+   * Set bar
+   */
+  @JsonProperty(JSON_PROPERTY_BAR)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setBar(String bar) {
+    this.bar = bar;
+  }
+
+  public Foo bar(String bar) {
+    this.bar = bar;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Foo {\n");
+    
+    sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/FooGetDefaultResponse.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/FooGetDefaultResponse.java
new file mode 100644
index 00000000000..b7402dc34a8
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/FooGetDefaultResponse.java
@@ -0,0 +1,97 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.openapitools.client.model.Foo;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  FooGetDefaultResponse.JSON_PROPERTY_STRING
+})
+@JsonTypeName("_foo_get_default_response")
+
+public class FooGetDefaultResponse  {
+  
+  public static final String JSON_PROPERTY_STRING = "string";
+  
+  private Foo string;
+
+  /**
+   * Get string
+   * @return string
+   **/
+  @JsonProperty(JSON_PROPERTY_STRING)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public Foo getString() {
+    return string;
+  }
+
+  /**
+   * Set string
+   */
+  @JsonProperty(JSON_PROPERTY_STRING)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setString(Foo string) {
+    this.string = string;
+  }
+
+  public FooGetDefaultResponse string(Foo string) {
+    this.string = string;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class FooGetDefaultResponse {\n");
+    
+    sb.append("    string: ").append(toIndentedString(string)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/FormatTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/FormatTest.java
new file mode 100644
index 00000000000..67d54cf4552
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/FormatTest.java
@@ -0,0 +1,566 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.io.File;
+import java.math.BigDecimal;
+import java.util.Date;
+import java.util.UUID;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  FormatTest.JSON_PROPERTY_INTEGER,
+  FormatTest.JSON_PROPERTY_INT32,
+  FormatTest.JSON_PROPERTY_INT64,
+  FormatTest.JSON_PROPERTY_NUMBER,
+  FormatTest.JSON_PROPERTY_FLOAT,
+  FormatTest.JSON_PROPERTY_DOUBLE,
+  FormatTest.JSON_PROPERTY_DECIMAL,
+  FormatTest.JSON_PROPERTY_STRING,
+  FormatTest.JSON_PROPERTY_BYTE,
+  FormatTest.JSON_PROPERTY_BINARY,
+  FormatTest.JSON_PROPERTY_DATE,
+  FormatTest.JSON_PROPERTY_DATE_TIME,
+  FormatTest.JSON_PROPERTY_UUID,
+  FormatTest.JSON_PROPERTY_PASSWORD,
+  FormatTest.JSON_PROPERTY_PATTERN_WITH_DIGITS,
+  FormatTest.JSON_PROPERTY_PATTERN_WITH_DIGITS_AND_DELIMITER
+})
+@JsonTypeName("format_test")
+
+public class FormatTest  {
+  
+  public static final String JSON_PROPERTY_INTEGER = "integer";
+  
+  private Integer integer;
+
+  public static final String JSON_PROPERTY_INT32 = "int32";
+  
+  private Integer int32;
+
+  public static final String JSON_PROPERTY_INT64 = "int64";
+  
+  private Long int64;
+
+  public static final String JSON_PROPERTY_NUMBER = "number";
+  
+  private BigDecimal number;
+
+  public static final String JSON_PROPERTY_FLOAT = "float";
+  
+  private Float _float;
+
+  public static final String JSON_PROPERTY_DOUBLE = "double";
+  
+  private Double _double;
+
+  public static final String JSON_PROPERTY_DECIMAL = "decimal";
+  
+  private BigDecimal decimal;
+
+  public static final String JSON_PROPERTY_STRING = "string";
+  
+  private String string;
+
+  public static final String JSON_PROPERTY_BYTE = "byte";
+  
+  private byte[] _byte;
+
+  public static final String JSON_PROPERTY_BINARY = "binary";
+  
+  private File binary;
+
+  public static final String JSON_PROPERTY_DATE = "date";
+  
+  private Date date;
+
+  public static final String JSON_PROPERTY_DATE_TIME = "dateTime";
+  
+  private Date dateTime;
+
+  public static final String JSON_PROPERTY_UUID = "uuid";
+  
+  private UUID uuid;
+
+  public static final String JSON_PROPERTY_PASSWORD = "password";
+  
+  private String password;
+
+  public static final String JSON_PROPERTY_PATTERN_WITH_DIGITS = "pattern_with_digits";
+ /**
+  * A string that is a 10 digit number. Can have leading zeros.
+  */
+  
+  private String patternWithDigits;
+
+  public static final String JSON_PROPERTY_PATTERN_WITH_DIGITS_AND_DELIMITER = "pattern_with_digits_and_delimiter";
+ /**
+  * A string starting with 'image_' (case insensitive) and one to three digits following i.e. Image_01.
+  */
+  
+  private String patternWithDigitsAndDelimiter;
+
+  /**
+   * Get integer
+   * minimum: 10
+   * maximum: 100
+   * @return integer
+   **/
+  @JsonProperty(JSON_PROPERTY_INTEGER)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public Integer getInteger() {
+    return integer;
+  }
+
+  /**
+   * Set integer
+   */
+  @JsonProperty(JSON_PROPERTY_INTEGER)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setInteger(Integer integer) {
+    this.integer = integer;
+  }
+
+  public FormatTest integer(Integer integer) {
+    this.integer = integer;
+    return this;
+  }
+
+  /**
+   * Get int32
+   * minimum: 20
+   * maximum: 200
+   * @return int32
+   **/
+  @JsonProperty(JSON_PROPERTY_INT32)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public Integer getInt32() {
+    return int32;
+  }
+
+  /**
+   * Set int32
+   */
+  @JsonProperty(JSON_PROPERTY_INT32)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setInt32(Integer int32) {
+    this.int32 = int32;
+  }
+
+  public FormatTest int32(Integer int32) {
+    this.int32 = int32;
+    return this;
+  }
+
+  /**
+   * Get int64
+   * @return int64
+   **/
+  @JsonProperty(JSON_PROPERTY_INT64)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public Long getInt64() {
+    return int64;
+  }
+
+  /**
+   * Set int64
+   */
+  @JsonProperty(JSON_PROPERTY_INT64)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setInt64(Long int64) {
+    this.int64 = int64;
+  }
+
+  public FormatTest int64(Long int64) {
+    this.int64 = int64;
+    return this;
+  }
+
+  /**
+   * Get number
+   * minimum: 32.1
+   * maximum: 543.2
+   * @return number
+   **/
+  @JsonProperty(JSON_PROPERTY_NUMBER)
+  @JsonInclude(value = JsonInclude.Include.ALWAYS)
+  public BigDecimal getNumber() {
+    return number;
+  }
+
+  /**
+   * Set number
+   */
+  @JsonProperty(JSON_PROPERTY_NUMBER)
+  @JsonInclude(value = JsonInclude.Include.ALWAYS)
+  public void setNumber(BigDecimal number) {
+    this.number = number;
+  }
+
+  public FormatTest number(BigDecimal number) {
+    this.number = number;
+    return this;
+  }
+
+  /**
+   * Get _float
+   * minimum: 54.3
+   * maximum: 987.6
+   * @return _float
+   **/
+  @JsonProperty(JSON_PROPERTY_FLOAT)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public Float getFloat() {
+    return _float;
+  }
+
+  /**
+   * Set _float
+   */
+  @JsonProperty(JSON_PROPERTY_FLOAT)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setFloat(Float _float) {
+    this._float = _float;
+  }
+
+  public FormatTest _float(Float _float) {
+    this._float = _float;
+    return this;
+  }
+
+  /**
+   * Get _double
+   * minimum: 67.8
+   * maximum: 123.4
+   * @return _double
+   **/
+  @JsonProperty(JSON_PROPERTY_DOUBLE)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public Double getDouble() {
+    return _double;
+  }
+
+  /**
+   * Set _double
+   */
+  @JsonProperty(JSON_PROPERTY_DOUBLE)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setDouble(Double _double) {
+    this._double = _double;
+  }
+
+  public FormatTest _double(Double _double) {
+    this._double = _double;
+    return this;
+  }
+
+  /**
+   * Get decimal
+   * @return decimal
+   **/
+  @JsonProperty(JSON_PROPERTY_DECIMAL)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public BigDecimal getDecimal() {
+    return decimal;
+  }
+
+  /**
+   * Set decimal
+   */
+  @JsonProperty(JSON_PROPERTY_DECIMAL)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setDecimal(BigDecimal decimal) {
+    this.decimal = decimal;
+  }
+
+  public FormatTest decimal(BigDecimal decimal) {
+    this.decimal = decimal;
+    return this;
+  }
+
+  /**
+   * Get string
+   * @return string
+   **/
+  @JsonProperty(JSON_PROPERTY_STRING)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getString() {
+    return string;
+  }
+
+  /**
+   * Set string
+   */
+  @JsonProperty(JSON_PROPERTY_STRING)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setString(String string) {
+    this.string = string;
+  }
+
+  public FormatTest string(String string) {
+    this.string = string;
+    return this;
+  }
+
+  /**
+   * Get _byte
+   * @return _byte
+   **/
+  @JsonProperty(JSON_PROPERTY_BYTE)
+  @JsonInclude(value = JsonInclude.Include.ALWAYS)
+  public byte[] getByte() {
+    return _byte;
+  }
+
+  /**
+   * Set _byte
+   */
+  @JsonProperty(JSON_PROPERTY_BYTE)
+  @JsonInclude(value = JsonInclude.Include.ALWAYS)
+  public void setByte(byte[] _byte) {
+    this._byte = _byte;
+  }
+
+  public FormatTest _byte(byte[] _byte) {
+    this._byte = _byte;
+    return this;
+  }
+
+  /**
+   * Get binary
+   * @return binary
+   **/
+  @JsonProperty(JSON_PROPERTY_BINARY)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public File getBinary() {
+    return binary;
+  }
+
+  /**
+   * Set binary
+   */
+  @JsonProperty(JSON_PROPERTY_BINARY)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setBinary(File binary) {
+    this.binary = binary;
+  }
+
+  public FormatTest binary(File binary) {
+    this.binary = binary;
+    return this;
+  }
+
+  /**
+   * Get date
+   * @return date
+   **/
+  @JsonProperty(JSON_PROPERTY_DATE)
+  @JsonInclude(value = JsonInclude.Include.ALWAYS)
+  public Date getDate() {
+    return date;
+  }
+
+  /**
+   * Set date
+   */
+  @JsonProperty(JSON_PROPERTY_DATE)
+  @JsonInclude(value = JsonInclude.Include.ALWAYS)
+  public void setDate(Date date) {
+    this.date = date;
+  }
+
+  public FormatTest date(Date date) {
+    this.date = date;
+    return this;
+  }
+
+  /**
+   * Get dateTime
+   * @return dateTime
+   **/
+  @JsonProperty(JSON_PROPERTY_DATE_TIME)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public Date getDateTime() {
+    return dateTime;
+  }
+
+  /**
+   * Set dateTime
+   */
+  @JsonProperty(JSON_PROPERTY_DATE_TIME)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setDateTime(Date dateTime) {
+    this.dateTime = dateTime;
+  }
+
+  public FormatTest dateTime(Date dateTime) {
+    this.dateTime = dateTime;
+    return this;
+  }
+
+  /**
+   * Get uuid
+   * @return uuid
+   **/
+  @JsonProperty(JSON_PROPERTY_UUID)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public UUID getUuid() {
+    return uuid;
+  }
+
+  /**
+   * Set uuid
+   */
+  @JsonProperty(JSON_PROPERTY_UUID)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setUuid(UUID uuid) {
+    this.uuid = uuid;
+  }
+
+  public FormatTest uuid(UUID uuid) {
+    this.uuid = uuid;
+    return this;
+  }
+
+  /**
+   * Get password
+   * @return password
+   **/
+  @JsonProperty(JSON_PROPERTY_PASSWORD)
+  @JsonInclude(value = JsonInclude.Include.ALWAYS)
+  public String getPassword() {
+    return password;
+  }
+
+  /**
+   * Set password
+   */
+  @JsonProperty(JSON_PROPERTY_PASSWORD)
+  @JsonInclude(value = JsonInclude.Include.ALWAYS)
+  public void setPassword(String password) {
+    this.password = password;
+  }
+
+  public FormatTest password(String password) {
+    this.password = password;
+    return this;
+  }
+
+  /**
+   * A string that is a 10 digit number. Can have leading zeros.
+   * @return patternWithDigits
+   **/
+  @JsonProperty(JSON_PROPERTY_PATTERN_WITH_DIGITS)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getPatternWithDigits() {
+    return patternWithDigits;
+  }
+
+  /**
+   * Set patternWithDigits
+   */
+  @JsonProperty(JSON_PROPERTY_PATTERN_WITH_DIGITS)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setPatternWithDigits(String patternWithDigits) {
+    this.patternWithDigits = patternWithDigits;
+  }
+
+  public FormatTest patternWithDigits(String patternWithDigits) {
+    this.patternWithDigits = patternWithDigits;
+    return this;
+  }
+
+  /**
+   * A string starting with &#39;image_&#39; (case insensitive) and one to three digits following i.e. Image_01.
+   * @return patternWithDigitsAndDelimiter
+   **/
+  @JsonProperty(JSON_PROPERTY_PATTERN_WITH_DIGITS_AND_DELIMITER)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getPatternWithDigitsAndDelimiter() {
+    return patternWithDigitsAndDelimiter;
+  }
+
+  /**
+   * Set patternWithDigitsAndDelimiter
+   */
+  @JsonProperty(JSON_PROPERTY_PATTERN_WITH_DIGITS_AND_DELIMITER)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setPatternWithDigitsAndDelimiter(String patternWithDigitsAndDelimiter) {
+    this.patternWithDigitsAndDelimiter = patternWithDigitsAndDelimiter;
+  }
+
+  public FormatTest patternWithDigitsAndDelimiter(String patternWithDigitsAndDelimiter) {
+    this.patternWithDigitsAndDelimiter = patternWithDigitsAndDelimiter;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class FormatTest {\n");
+    
+    sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
+    sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
+    sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
+    sb.append("    number: ").append(toIndentedString(number)).append("\n");
+    sb.append("    _float: ").append(toIndentedString(_float)).append("\n");
+    sb.append("    _double: ").append(toIndentedString(_double)).append("\n");
+    sb.append("    decimal: ").append(toIndentedString(decimal)).append("\n");
+    sb.append("    string: ").append(toIndentedString(string)).append("\n");
+    sb.append("    _byte: ").append(toIndentedString(_byte)).append("\n");
+    sb.append("    binary: ").append(toIndentedString(binary)).append("\n");
+    sb.append("    date: ").append(toIndentedString(date)).append("\n");
+    sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
+    sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
+    sb.append("    password: ").append("*").append("\n");
+    sb.append("    patternWithDigits: ").append(toIndentedString(patternWithDigits)).append("\n");
+    sb.append("    patternWithDigitsAndDelimiter: ").append(toIndentedString(patternWithDigitsAndDelimiter)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/HasOnlyReadOnly.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/HasOnlyReadOnly.java
new file mode 100644
index 00000000000..78de93c838b
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/HasOnlyReadOnly.java
@@ -0,0 +1,112 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  HasOnlyReadOnly.JSON_PROPERTY_BAR,
+  HasOnlyReadOnly.JSON_PROPERTY_FOO
+})
+@JsonTypeName("hasOnlyReadOnly")
+
+public class HasOnlyReadOnly  {
+  
+  public static final String JSON_PROPERTY_BAR = "bar";
+  
+  private String bar;
+
+  public static final String JSON_PROPERTY_FOO = "foo";
+  
+  private String foo;
+
+  public HasOnlyReadOnly() {
+  }
+
+ @JsonCreator
+  public HasOnlyReadOnly(
+    @JsonProperty(value = JSON_PROPERTY_BAR) String bar, 
+    @JsonProperty(value = JSON_PROPERTY_FOO) String foo
+  ) {
+    this.bar = bar;
+    this.foo = foo;
+  }
+  
+  /**
+   * Get bar
+   * @return bar
+   **/
+  @JsonProperty(JSON_PROPERTY_BAR)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getBar() {
+    return bar;
+  }
+
+
+  /**
+   * Get foo
+   * @return foo
+   **/
+  @JsonProperty(JSON_PROPERTY_FOO)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getFoo() {
+    return foo;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class HasOnlyReadOnly {\n");
+    
+    sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
+    sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/HealthCheckResult.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/HealthCheckResult.java
new file mode 100644
index 00000000000..faeae0f51c2
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/HealthCheckResult.java
@@ -0,0 +1,98 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  HealthCheckResult.JSON_PROPERTY_NULLABLE_MESSAGE
+})
+/**
+  * Just a string to inform instance is up and running. Make it nullable in hope to get it as pointer in generated model.
+  */
+
+public class HealthCheckResult  {
+  
+  public static final String JSON_PROPERTY_NULLABLE_MESSAGE = "NullableMessage";
+  
+  private String nullableMessage;
+
+  /**
+   * Get nullableMessage
+   * @return nullableMessage
+   **/
+  @JsonProperty(JSON_PROPERTY_NULLABLE_MESSAGE)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getNullableMessage() {
+    return nullableMessage;
+  }
+
+  /**
+   * Set nullableMessage
+   */
+  @JsonProperty(JSON_PROPERTY_NULLABLE_MESSAGE)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setNullableMessage(String nullableMessage) {
+    this.nullableMessage = nullableMessage;
+  }
+
+  public HealthCheckResult nullableMessage(String nullableMessage) {
+    this.nullableMessage = nullableMessage;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class HealthCheckResult {\n");
+    
+    sb.append("    nullableMessage: ").append(toIndentedString(nullableMessage)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/MapTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/MapTest.java
new file mode 100644
index 00000000000..5adaa6bb314
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/MapTest.java
@@ -0,0 +1,251 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.util.HashMap;
+import java.util.Map;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  MapTest.JSON_PROPERTY_MAP_MAP_OF_STRING,
+  MapTest.JSON_PROPERTY_MAP_OF_ENUM_STRING,
+  MapTest.JSON_PROPERTY_DIRECT_MAP,
+  MapTest.JSON_PROPERTY_INDIRECT_MAP
+})
+
+public class MapTest  {
+  
+  public static final String JSON_PROPERTY_MAP_MAP_OF_STRING = "map_map_of_string";
+  
+  private Map<String, Map<String, String>> mapMapOfString = null;
+
+  public enum InnerEnum {
+
+    UPPER(String.valueOf("UPPER")), LOWER(String.valueOf("lower"));
+
+
+    String value;
+
+    InnerEnum (String v) {
+        value = v;
+    }
+
+    @JsonValue
+    public String value() {
+        return value;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(value);
+    }
+
+    @JsonCreator
+        public static InnerEnum fromValue(String value) {
+            for (InnerEnum b : InnerEnum.values()) {
+                if (b.value.equals(value)) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        }
+  }
+
+  public static final String JSON_PROPERTY_MAP_OF_ENUM_STRING = "map_of_enum_string";
+  
+  private Map<String, InnerEnum> mapOfEnumString = null;
+
+  public static final String JSON_PROPERTY_DIRECT_MAP = "direct_map";
+  
+  private Map<String, Boolean> directMap = null;
+
+  public static final String JSON_PROPERTY_INDIRECT_MAP = "indirect_map";
+  
+  private Map<String, Boolean> indirectMap = null;
+
+  /**
+   * Get mapMapOfString
+   * @return mapMapOfString
+   **/
+  @JsonProperty(JSON_PROPERTY_MAP_MAP_OF_STRING)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public Map<String, Map<String, String>> getMapMapOfString() {
+    return mapMapOfString;
+  }
+
+  /**
+   * Set mapMapOfString
+   */
+  @JsonProperty(JSON_PROPERTY_MAP_MAP_OF_STRING)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setMapMapOfString(Map<String, Map<String, String>> mapMapOfString) {
+    this.mapMapOfString = mapMapOfString;
+  }
+
+  public MapTest mapMapOfString(Map<String, Map<String, String>> mapMapOfString) {
+    this.mapMapOfString = mapMapOfString;
+    return this;
+  }
+
+  public MapTest putMapMapOfStringItem(String key, Map<String, String> mapMapOfStringItem) {
+    if (this.mapMapOfString == null) {
+      this.mapMapOfString = new HashMap<>();
+    }
+    this.mapMapOfString.put(key, mapMapOfStringItem);
+    return this;
+  }
+
+  /**
+   * Get mapOfEnumString
+   * @return mapOfEnumString
+   **/
+  @JsonProperty(JSON_PROPERTY_MAP_OF_ENUM_STRING)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public Map<String, InnerEnum> getMapOfEnumString() {
+    return mapOfEnumString;
+  }
+
+  /**
+   * Set mapOfEnumString
+   */
+  @JsonProperty(JSON_PROPERTY_MAP_OF_ENUM_STRING)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setMapOfEnumString(Map<String, InnerEnum> mapOfEnumString) {
+    this.mapOfEnumString = mapOfEnumString;
+  }
+
+  public MapTest mapOfEnumString(Map<String, InnerEnum> mapOfEnumString) {
+    this.mapOfEnumString = mapOfEnumString;
+    return this;
+  }
+
+  public MapTest putMapOfEnumStringItem(String key, InnerEnum mapOfEnumStringItem) {
+    if (this.mapOfEnumString == null) {
+      this.mapOfEnumString = new HashMap<>();
+    }
+    this.mapOfEnumString.put(key, mapOfEnumStringItem);
+    return this;
+  }
+
+  /**
+   * Get directMap
+   * @return directMap
+   **/
+  @JsonProperty(JSON_PROPERTY_DIRECT_MAP)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public Map<String, Boolean> getDirectMap() {
+    return directMap;
+  }
+
+  /**
+   * Set directMap
+   */
+  @JsonProperty(JSON_PROPERTY_DIRECT_MAP)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setDirectMap(Map<String, Boolean> directMap) {
+    this.directMap = directMap;
+  }
+
+  public MapTest directMap(Map<String, Boolean> directMap) {
+    this.directMap = directMap;
+    return this;
+  }
+
+  public MapTest putDirectMapItem(String key, Boolean directMapItem) {
+    if (this.directMap == null) {
+      this.directMap = new HashMap<>();
+    }
+    this.directMap.put(key, directMapItem);
+    return this;
+  }
+
+  /**
+   * Get indirectMap
+   * @return indirectMap
+   **/
+  @JsonProperty(JSON_PROPERTY_INDIRECT_MAP)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public Map<String, Boolean> getIndirectMap() {
+    return indirectMap;
+  }
+
+  /**
+   * Set indirectMap
+   */
+  @JsonProperty(JSON_PROPERTY_INDIRECT_MAP)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setIndirectMap(Map<String, Boolean> indirectMap) {
+    this.indirectMap = indirectMap;
+  }
+
+  public MapTest indirectMap(Map<String, Boolean> indirectMap) {
+    this.indirectMap = indirectMap;
+    return this;
+  }
+
+  public MapTest putIndirectMapItem(String key, Boolean indirectMapItem) {
+    if (this.indirectMap == null) {
+      this.indirectMap = new HashMap<>();
+    }
+    this.indirectMap.put(key, indirectMapItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class MapTest {\n");
+    
+    sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
+    sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
+    sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
+    sb.append("    indirectMap: ").append(toIndentedString(indirectMap)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
new file mode 100644
index 00000000000..78060d4ef76
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -0,0 +1,168 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.UUID;
+import org.openapitools.client.model.Animal;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  MixedPropertiesAndAdditionalPropertiesClass.JSON_PROPERTY_UUID,
+  MixedPropertiesAndAdditionalPropertiesClass.JSON_PROPERTY_DATE_TIME,
+  MixedPropertiesAndAdditionalPropertiesClass.JSON_PROPERTY_MAP
+})
+
+public class MixedPropertiesAndAdditionalPropertiesClass  {
+  
+  public static final String JSON_PROPERTY_UUID = "uuid";
+  
+  private UUID uuid;
+
+  public static final String JSON_PROPERTY_DATE_TIME = "dateTime";
+  
+  private Date dateTime;
+
+  public static final String JSON_PROPERTY_MAP = "map";
+  
+  private Map<String, Animal> map = null;
+
+  /**
+   * Get uuid
+   * @return uuid
+   **/
+  @JsonProperty(JSON_PROPERTY_UUID)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public UUID getUuid() {
+    return uuid;
+  }
+
+  /**
+   * Set uuid
+   */
+  @JsonProperty(JSON_PROPERTY_UUID)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setUuid(UUID uuid) {
+    this.uuid = uuid;
+  }
+
+  public MixedPropertiesAndAdditionalPropertiesClass uuid(UUID uuid) {
+    this.uuid = uuid;
+    return this;
+  }
+
+  /**
+   * Get dateTime
+   * @return dateTime
+   **/
+  @JsonProperty(JSON_PROPERTY_DATE_TIME)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public Date getDateTime() {
+    return dateTime;
+  }
+
+  /**
+   * Set dateTime
+   */
+  @JsonProperty(JSON_PROPERTY_DATE_TIME)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setDateTime(Date dateTime) {
+    this.dateTime = dateTime;
+  }
+
+  public MixedPropertiesAndAdditionalPropertiesClass dateTime(Date dateTime) {
+    this.dateTime = dateTime;
+    return this;
+  }
+
+  /**
+   * Get map
+   * @return map
+   **/
+  @JsonProperty(JSON_PROPERTY_MAP)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public Map<String, Animal> getMap() {
+    return map;
+  }
+
+  /**
+   * Set map
+   */
+  @JsonProperty(JSON_PROPERTY_MAP)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setMap(Map<String, Animal> map) {
+    this.map = map;
+  }
+
+  public MixedPropertiesAndAdditionalPropertiesClass map(Map<String, Animal> map) {
+    this.map = map;
+    return this;
+  }
+
+  public MixedPropertiesAndAdditionalPropertiesClass putMapItem(String key, Animal mapItem) {
+    if (this.map == null) {
+      this.map = new HashMap<>();
+    }
+    this.map.put(key, mapItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
+    
+    sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
+    sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
+    sb.append("    map: ").append(toIndentedString(map)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Model200Response.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Model200Response.java
new file mode 100644
index 00000000000..56557b9ab1e
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Model200Response.java
@@ -0,0 +1,129 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  Model200Response.JSON_PROPERTY_NAME,
+  Model200Response.JSON_PROPERTY_PROPERTY_CLASS
+})
+@JsonTypeName("200_response")
+/**
+  * Model for testing model name starting with number
+  */
+
+public class Model200Response  {
+  
+  public static final String JSON_PROPERTY_NAME = "name";
+  
+  private Integer name;
+
+  public static final String JSON_PROPERTY_PROPERTY_CLASS = "class";
+  
+  private String propertyClass;
+
+  /**
+   * Get name
+   * @return name
+   **/
+  @JsonProperty(JSON_PROPERTY_NAME)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public Integer getName() {
+    return name;
+  }
+
+  /**
+   * Set name
+   */
+  @JsonProperty(JSON_PROPERTY_NAME)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setName(Integer name) {
+    this.name = name;
+  }
+
+  public Model200Response name(Integer name) {
+    this.name = name;
+    return this;
+  }
+
+  /**
+   * Get propertyClass
+   * @return propertyClass
+   **/
+  @JsonProperty(JSON_PROPERTY_PROPERTY_CLASS)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getPropertyClass() {
+    return propertyClass;
+  }
+
+  /**
+   * Set propertyClass
+   */
+  @JsonProperty(JSON_PROPERTY_PROPERTY_CLASS)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setPropertyClass(String propertyClass) {
+    this.propertyClass = propertyClass;
+  }
+
+  public Model200Response propertyClass(String propertyClass) {
+    this.propertyClass = propertyClass;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Model200Response {\n");
+    
+    sb.append("    name: ").append(toIndentedString(name)).append("\n");
+    sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ModelApiResponse.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ModelApiResponse.java
index b5436a50670..8539f1173a9 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ModelApiResponse.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ModelApiResponse.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -30,9 +30,6 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
   ModelApiResponse.JSON_PROPERTY_MESSAGE
 })
 @JsonTypeName("ApiResponse")
-/**
-  * Describes the result of uploading an image resource
-  */
 
 public class ModelApiResponse  {
   
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ModelFile.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ModelFile.java
new file mode 100644
index 00000000000..77a5d760f0f
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ModelFile.java
@@ -0,0 +1,102 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  ModelFile.JSON_PROPERTY_SOURCE_U_R_I
+})
+@JsonTypeName("File")
+/**
+  * Must be named `File` for test.
+  */
+
+public class ModelFile  {
+  
+  public static final String JSON_PROPERTY_SOURCE_U_R_I = "sourceURI";
+ /**
+  * Test capitalization
+  */
+  
+  private String sourceURI;
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+   **/
+  @JsonProperty(JSON_PROPERTY_SOURCE_U_R_I)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  /**
+   * Set sourceURI
+   */
+  @JsonProperty(JSON_PROPERTY_SOURCE_U_R_I)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ModelList.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ModelList.java
new file mode 100644
index 00000000000..27814afbd02
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ModelList.java
@@ -0,0 +1,96 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  ModelList.JSON_PROPERTY_123LIST
+})
+@JsonTypeName("List")
+
+public class ModelList  {
+  
+  public static final String JSON_PROPERTY_123LIST = "123-list";
+  
+  private String _123list;
+
+  /**
+   * Get _123list
+   * @return _123list
+   **/
+  @JsonProperty(JSON_PROPERTY_123LIST)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String get123list() {
+    return _123list;
+  }
+
+  /**
+   * Set _123list
+   */
+  @JsonProperty(JSON_PROPERTY_123LIST)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ModelReturn.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ModelReturn.java
new file mode 100644
index 00000000000..53c7bc7623c
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ModelReturn.java
@@ -0,0 +1,99 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  ModelReturn.JSON_PROPERTY_RETURN
+})
+@JsonTypeName("Return")
+/**
+  * Model for testing reserved words
+  */
+
+public class ModelReturn  {
+  
+  public static final String JSON_PROPERTY_RETURN = "return";
+  
+  private Integer _return;
+
+  /**
+   * Get _return
+   * @return _return
+   **/
+  @JsonProperty(JSON_PROPERTY_RETURN)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public Integer getReturn() {
+    return _return;
+  }
+
+  /**
+   * Set _return
+   */
+  @JsonProperty(JSON_PROPERTY_RETURN)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setReturn(Integer _return) {
+    this._return = _return;
+  }
+
+  public ModelReturn _return(Integer _return) {
+    this._return = _return;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelReturn {\n");
+    
+    sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Name.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Name.java
new file mode 100644
index 00000000000..81ab3e3d38d
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Name.java
@@ -0,0 +1,174 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  Name.JSON_PROPERTY_NAME,
+  Name.JSON_PROPERTY_SNAKE_CASE,
+  Name.JSON_PROPERTY_PROPERTY,
+  Name.JSON_PROPERTY_123NUMBER
+})
+/**
+  * Model for testing model name same as property name
+  */
+
+public class Name  {
+  
+  public static final String JSON_PROPERTY_NAME = "name";
+  
+  private Integer name;
+
+  public static final String JSON_PROPERTY_SNAKE_CASE = "snake_case";
+  
+  private Integer snakeCase;
+
+  public static final String JSON_PROPERTY_PROPERTY = "property";
+  
+  private String property;
+
+  public static final String JSON_PROPERTY_123NUMBER = "123Number";
+  
+  private Integer _123number;
+
+  public Name() {
+  }
+
+ @JsonCreator
+  public Name(
+    @JsonProperty(value = JSON_PROPERTY_SNAKE_CASE) Integer snakeCase, 
+    @JsonProperty(value = JSON_PROPERTY_123NUMBER) Integer _123number
+  ) {
+    this.snakeCase = snakeCase;
+    this._123number = _123number;
+  }
+  
+  /**
+   * Get name
+   * @return name
+   **/
+  @JsonProperty(JSON_PROPERTY_NAME)
+  @JsonInclude(value = JsonInclude.Include.ALWAYS)
+  public Integer getName() {
+    return name;
+  }
+
+  /**
+   * Set name
+   */
+  @JsonProperty(JSON_PROPERTY_NAME)
+  @JsonInclude(value = JsonInclude.Include.ALWAYS)
+  public void setName(Integer name) {
+    this.name = name;
+  }
+
+  public Name name(Integer name) {
+    this.name = name;
+    return this;
+  }
+
+  /**
+   * Get snakeCase
+   * @return snakeCase
+   **/
+  @JsonProperty(JSON_PROPERTY_SNAKE_CASE)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public Integer getSnakeCase() {
+    return snakeCase;
+  }
+
+
+  /**
+   * Get property
+   * @return property
+   **/
+  @JsonProperty(JSON_PROPERTY_PROPERTY)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getProperty() {
+    return property;
+  }
+
+  /**
+   * Set property
+   */
+  @JsonProperty(JSON_PROPERTY_PROPERTY)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setProperty(String property) {
+    this.property = property;
+  }
+
+  public Name property(String property) {
+    this.property = property;
+    return this;
+  }
+
+  /**
+   * Get _123number
+   * @return _123number
+   **/
+  @JsonProperty(JSON_PROPERTY_123NUMBER)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public Integer get123number() {
+    return _123number;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Name {\n");
+    
+    sb.append("    name: ").append(toIndentedString(name)).append("\n");
+    sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
+    sb.append("    property: ").append(toIndentedString(property)).append("\n");
+    sb.append("    _123number: ").append(toIndentedString(_123number)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/NullableClass.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/NullableClass.java
new file mode 100644
index 00000000000..059c3597bcb
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/NullableClass.java
@@ -0,0 +1,480 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  NullableClass.JSON_PROPERTY_INTEGER_PROP,
+  NullableClass.JSON_PROPERTY_NUMBER_PROP,
+  NullableClass.JSON_PROPERTY_BOOLEAN_PROP,
+  NullableClass.JSON_PROPERTY_STRING_PROP,
+  NullableClass.JSON_PROPERTY_DATE_PROP,
+  NullableClass.JSON_PROPERTY_DATETIME_PROP,
+  NullableClass.JSON_PROPERTY_ARRAY_NULLABLE_PROP,
+  NullableClass.JSON_PROPERTY_ARRAY_AND_ITEMS_NULLABLE_PROP,
+  NullableClass.JSON_PROPERTY_ARRAY_ITEMS_NULLABLE,
+  NullableClass.JSON_PROPERTY_OBJECT_NULLABLE_PROP,
+  NullableClass.JSON_PROPERTY_OBJECT_AND_ITEMS_NULLABLE_PROP,
+  NullableClass.JSON_PROPERTY_OBJECT_ITEMS_NULLABLE
+})
+
+public class NullableClass extends HashMap<String, Object> {
+  
+  public static final String JSON_PROPERTY_INTEGER_PROP = "integer_prop";
+  
+  private Integer integerProp;
+
+  public static final String JSON_PROPERTY_NUMBER_PROP = "number_prop";
+  
+  private BigDecimal numberProp;
+
+  public static final String JSON_PROPERTY_BOOLEAN_PROP = "boolean_prop";
+  
+  private Boolean booleanProp;
+
+  public static final String JSON_PROPERTY_STRING_PROP = "string_prop";
+  
+  private String stringProp;
+
+  public static final String JSON_PROPERTY_DATE_PROP = "date_prop";
+  
+  private Date dateProp;
+
+  public static final String JSON_PROPERTY_DATETIME_PROP = "datetime_prop";
+  
+  private Date datetimeProp;
+
+  public static final String JSON_PROPERTY_ARRAY_NULLABLE_PROP = "array_nullable_prop";
+  
+  private List<Object> arrayNullableProp = null;
+
+  public static final String JSON_PROPERTY_ARRAY_AND_ITEMS_NULLABLE_PROP = "array_and_items_nullable_prop";
+  
+  private List<Object> arrayAndItemsNullableProp = null;
+
+  public static final String JSON_PROPERTY_ARRAY_ITEMS_NULLABLE = "array_items_nullable";
+  
+  private List<Object> arrayItemsNullable = null;
+
+  public static final String JSON_PROPERTY_OBJECT_NULLABLE_PROP = "object_nullable_prop";
+  
+  private Map<String, Object> objectNullableProp = null;
+
+  public static final String JSON_PROPERTY_OBJECT_AND_ITEMS_NULLABLE_PROP = "object_and_items_nullable_prop";
+  
+  private Map<String, Object> objectAndItemsNullableProp = null;
+
+  public static final String JSON_PROPERTY_OBJECT_ITEMS_NULLABLE = "object_items_nullable";
+  
+  private Map<String, Object> objectItemsNullable = null;
+
+  /**
+   * Get integerProp
+   * @return integerProp
+   **/
+  @JsonProperty(JSON_PROPERTY_INTEGER_PROP)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public Integer getIntegerProp() {
+    return integerProp;
+  }
+
+  /**
+   * Set integerProp
+   */
+  @JsonProperty(JSON_PROPERTY_INTEGER_PROP)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setIntegerProp(Integer integerProp) {
+    this.integerProp = integerProp;
+  }
+
+  public NullableClass integerProp(Integer integerProp) {
+    this.integerProp = integerProp;
+    return this;
+  }
+
+  /**
+   * Get numberProp
+   * @return numberProp
+   **/
+  @JsonProperty(JSON_PROPERTY_NUMBER_PROP)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public BigDecimal getNumberProp() {
+    return numberProp;
+  }
+
+  /**
+   * Set numberProp
+   */
+  @JsonProperty(JSON_PROPERTY_NUMBER_PROP)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setNumberProp(BigDecimal numberProp) {
+    this.numberProp = numberProp;
+  }
+
+  public NullableClass numberProp(BigDecimal numberProp) {
+    this.numberProp = numberProp;
+    return this;
+  }
+
+  /**
+   * Get booleanProp
+   * @return booleanProp
+   **/
+  @JsonProperty(JSON_PROPERTY_BOOLEAN_PROP)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public Boolean getBooleanProp() {
+    return booleanProp;
+  }
+
+  /**
+   * Set booleanProp
+   */
+  @JsonProperty(JSON_PROPERTY_BOOLEAN_PROP)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setBooleanProp(Boolean booleanProp) {
+    this.booleanProp = booleanProp;
+  }
+
+  public NullableClass booleanProp(Boolean booleanProp) {
+    this.booleanProp = booleanProp;
+    return this;
+  }
+
+  /**
+   * Get stringProp
+   * @return stringProp
+   **/
+  @JsonProperty(JSON_PROPERTY_STRING_PROP)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getStringProp() {
+    return stringProp;
+  }
+
+  /**
+   * Set stringProp
+   */
+  @JsonProperty(JSON_PROPERTY_STRING_PROP)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setStringProp(String stringProp) {
+    this.stringProp = stringProp;
+  }
+
+  public NullableClass stringProp(String stringProp) {
+    this.stringProp = stringProp;
+    return this;
+  }
+
+  /**
+   * Get dateProp
+   * @return dateProp
+   **/
+  @JsonProperty(JSON_PROPERTY_DATE_PROP)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public Date getDateProp() {
+    return dateProp;
+  }
+
+  /**
+   * Set dateProp
+   */
+  @JsonProperty(JSON_PROPERTY_DATE_PROP)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setDateProp(Date dateProp) {
+    this.dateProp = dateProp;
+  }
+
+  public NullableClass dateProp(Date dateProp) {
+    this.dateProp = dateProp;
+    return this;
+  }
+
+  /**
+   * Get datetimeProp
+   * @return datetimeProp
+   **/
+  @JsonProperty(JSON_PROPERTY_DATETIME_PROP)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public Date getDatetimeProp() {
+    return datetimeProp;
+  }
+
+  /**
+   * Set datetimeProp
+   */
+  @JsonProperty(JSON_PROPERTY_DATETIME_PROP)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setDatetimeProp(Date datetimeProp) {
+    this.datetimeProp = datetimeProp;
+  }
+
+  public NullableClass datetimeProp(Date datetimeProp) {
+    this.datetimeProp = datetimeProp;
+    return this;
+  }
+
+  /**
+   * Get arrayNullableProp
+   * @return arrayNullableProp
+   **/
+  @JsonProperty(JSON_PROPERTY_ARRAY_NULLABLE_PROP)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public List<Object> getArrayNullableProp() {
+    return arrayNullableProp;
+  }
+
+  /**
+   * Set arrayNullableProp
+   */
+  @JsonProperty(JSON_PROPERTY_ARRAY_NULLABLE_PROP)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setArrayNullableProp(List<Object> arrayNullableProp) {
+    this.arrayNullableProp = arrayNullableProp;
+  }
+
+  public NullableClass arrayNullableProp(List<Object> arrayNullableProp) {
+    this.arrayNullableProp = arrayNullableProp;
+    return this;
+  }
+
+  public NullableClass addArrayNullablePropItem(Object arrayNullablePropItem) {
+    if (this.arrayNullableProp == null) {
+      this.arrayNullableProp = new ArrayList<>();
+    }
+    this.arrayNullableProp.add(arrayNullablePropItem);
+    return this;
+  }
+
+  /**
+   * Get arrayAndItemsNullableProp
+   * @return arrayAndItemsNullableProp
+   **/
+  @JsonProperty(JSON_PROPERTY_ARRAY_AND_ITEMS_NULLABLE_PROP)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public List<Object> getArrayAndItemsNullableProp() {
+    return arrayAndItemsNullableProp;
+  }
+
+  /**
+   * Set arrayAndItemsNullableProp
+   */
+  @JsonProperty(JSON_PROPERTY_ARRAY_AND_ITEMS_NULLABLE_PROP)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setArrayAndItemsNullableProp(List<Object> arrayAndItemsNullableProp) {
+    this.arrayAndItemsNullableProp = arrayAndItemsNullableProp;
+  }
+
+  public NullableClass arrayAndItemsNullableProp(List<Object> arrayAndItemsNullableProp) {
+    this.arrayAndItemsNullableProp = arrayAndItemsNullableProp;
+    return this;
+  }
+
+  public NullableClass addArrayAndItemsNullablePropItem(Object arrayAndItemsNullablePropItem) {
+    if (this.arrayAndItemsNullableProp == null) {
+      this.arrayAndItemsNullableProp = new ArrayList<>();
+    }
+    this.arrayAndItemsNullableProp.add(arrayAndItemsNullablePropItem);
+    return this;
+  }
+
+  /**
+   * Get arrayItemsNullable
+   * @return arrayItemsNullable
+   **/
+  @JsonProperty(JSON_PROPERTY_ARRAY_ITEMS_NULLABLE)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public List<Object> getArrayItemsNullable() {
+    return arrayItemsNullable;
+  }
+
+  /**
+   * Set arrayItemsNullable
+   */
+  @JsonProperty(JSON_PROPERTY_ARRAY_ITEMS_NULLABLE)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setArrayItemsNullable(List<Object> arrayItemsNullable) {
+    this.arrayItemsNullable = arrayItemsNullable;
+  }
+
+  public NullableClass arrayItemsNullable(List<Object> arrayItemsNullable) {
+    this.arrayItemsNullable = arrayItemsNullable;
+    return this;
+  }
+
+  public NullableClass addArrayItemsNullableItem(Object arrayItemsNullableItem) {
+    if (this.arrayItemsNullable == null) {
+      this.arrayItemsNullable = new ArrayList<>();
+    }
+    this.arrayItemsNullable.add(arrayItemsNullableItem);
+    return this;
+  }
+
+  /**
+   * Get objectNullableProp
+   * @return objectNullableProp
+   **/
+  @JsonProperty(JSON_PROPERTY_OBJECT_NULLABLE_PROP)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public Map<String, Object> getObjectNullableProp() {
+    return objectNullableProp;
+  }
+
+  /**
+   * Set objectNullableProp
+   */
+  @JsonProperty(JSON_PROPERTY_OBJECT_NULLABLE_PROP)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setObjectNullableProp(Map<String, Object> objectNullableProp) {
+    this.objectNullableProp = objectNullableProp;
+  }
+
+  public NullableClass objectNullableProp(Map<String, Object> objectNullableProp) {
+    this.objectNullableProp = objectNullableProp;
+    return this;
+  }
+
+  public NullableClass putObjectNullablePropItem(String key, Object objectNullablePropItem) {
+    if (this.objectNullableProp == null) {
+      this.objectNullableProp = new HashMap<>();
+    }
+    this.objectNullableProp.put(key, objectNullablePropItem);
+    return this;
+  }
+
+  /**
+   * Get objectAndItemsNullableProp
+   * @return objectAndItemsNullableProp
+   **/
+  @JsonProperty(JSON_PROPERTY_OBJECT_AND_ITEMS_NULLABLE_PROP)
+  @JsonInclude(content = JsonInclude.Include.ALWAYS, value = JsonInclude.Include.USE_DEFAULTS)
+  public Map<String, Object> getObjectAndItemsNullableProp() {
+    return objectAndItemsNullableProp;
+  }
+
+  /**
+   * Set objectAndItemsNullableProp
+   */
+  @JsonProperty(JSON_PROPERTY_OBJECT_AND_ITEMS_NULLABLE_PROP)
+  @JsonInclude(content = JsonInclude.Include.ALWAYS, value = JsonInclude.Include.USE_DEFAULTS)
+  public void setObjectAndItemsNullableProp(Map<String, Object> objectAndItemsNullableProp) {
+    this.objectAndItemsNullableProp = objectAndItemsNullableProp;
+  }
+
+  public NullableClass objectAndItemsNullableProp(Map<String, Object> objectAndItemsNullableProp) {
+    this.objectAndItemsNullableProp = objectAndItemsNullableProp;
+    return this;
+  }
+
+  public NullableClass putObjectAndItemsNullablePropItem(String key, Object objectAndItemsNullablePropItem) {
+    if (this.objectAndItemsNullableProp == null) {
+      this.objectAndItemsNullableProp = new HashMap<>();
+    }
+    this.objectAndItemsNullableProp.put(key, objectAndItemsNullablePropItem);
+    return this;
+  }
+
+  /**
+   * Get objectItemsNullable
+   * @return objectItemsNullable
+   **/
+  @JsonProperty(JSON_PROPERTY_OBJECT_ITEMS_NULLABLE)
+  @JsonInclude(content = JsonInclude.Include.ALWAYS, value = JsonInclude.Include.USE_DEFAULTS)
+  public Map<String, Object> getObjectItemsNullable() {
+    return objectItemsNullable;
+  }
+
+  /**
+   * Set objectItemsNullable
+   */
+  @JsonProperty(JSON_PROPERTY_OBJECT_ITEMS_NULLABLE)
+  @JsonInclude(content = JsonInclude.Include.ALWAYS, value = JsonInclude.Include.USE_DEFAULTS)
+  public void setObjectItemsNullable(Map<String, Object> objectItemsNullable) {
+    this.objectItemsNullable = objectItemsNullable;
+  }
+
+  public NullableClass objectItemsNullable(Map<String, Object> objectItemsNullable) {
+    this.objectItemsNullable = objectItemsNullable;
+    return this;
+  }
+
+  public NullableClass putObjectItemsNullableItem(String key, Object objectItemsNullableItem) {
+    if (this.objectItemsNullable == null) {
+      this.objectItemsNullable = new HashMap<>();
+    }
+    this.objectItemsNullable.put(key, objectItemsNullableItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class NullableClass {\n");
+    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+    sb.append("    integerProp: ").append(toIndentedString(integerProp)).append("\n");
+    sb.append("    numberProp: ").append(toIndentedString(numberProp)).append("\n");
+    sb.append("    booleanProp: ").append(toIndentedString(booleanProp)).append("\n");
+    sb.append("    stringProp: ").append(toIndentedString(stringProp)).append("\n");
+    sb.append("    dateProp: ").append(toIndentedString(dateProp)).append("\n");
+    sb.append("    datetimeProp: ").append(toIndentedString(datetimeProp)).append("\n");
+    sb.append("    arrayNullableProp: ").append(toIndentedString(arrayNullableProp)).append("\n");
+    sb.append("    arrayAndItemsNullableProp: ").append(toIndentedString(arrayAndItemsNullableProp)).append("\n");
+    sb.append("    arrayItemsNullable: ").append(toIndentedString(arrayItemsNullable)).append("\n");
+    sb.append("    objectNullableProp: ").append(toIndentedString(objectNullableProp)).append("\n");
+    sb.append("    objectAndItemsNullableProp: ").append(toIndentedString(objectAndItemsNullableProp)).append("\n");
+    sb.append("    objectItemsNullable: ").append(toIndentedString(objectItemsNullable)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/NumberOnly.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/NumberOnly.java
new file mode 100644
index 00000000000..6a9ffb70ff3
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/NumberOnly.java
@@ -0,0 +1,96 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.math.BigDecimal;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  NumberOnly.JSON_PROPERTY_JUST_NUMBER
+})
+
+public class NumberOnly  {
+  
+  public static final String JSON_PROPERTY_JUST_NUMBER = "JustNumber";
+  
+  private BigDecimal justNumber;
+
+  /**
+   * Get justNumber
+   * @return justNumber
+   **/
+  @JsonProperty(JSON_PROPERTY_JUST_NUMBER)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public BigDecimal getJustNumber() {
+    return justNumber;
+  }
+
+  /**
+   * Set justNumber
+   */
+  @JsonProperty(JSON_PROPERTY_JUST_NUMBER)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setJustNumber(BigDecimal justNumber) {
+    this.justNumber = justNumber;
+  }
+
+  public NumberOnly justNumber(BigDecimal justNumber) {
+    this.justNumber = justNumber;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class NumberOnly {\n");
+    
+    sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ObjectWithDeprecatedFields.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ObjectWithDeprecatedFields.java
new file mode 100644
index 00000000000..226bd6c44c9
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ObjectWithDeprecatedFields.java
@@ -0,0 +1,204 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.openapitools.client.model.DeprecatedObject;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  ObjectWithDeprecatedFields.JSON_PROPERTY_UUID,
+  ObjectWithDeprecatedFields.JSON_PROPERTY_ID,
+  ObjectWithDeprecatedFields.JSON_PROPERTY_DEPRECATED_REF,
+  ObjectWithDeprecatedFields.JSON_PROPERTY_BARS
+})
+
+public class ObjectWithDeprecatedFields  {
+  
+  public static final String JSON_PROPERTY_UUID = "uuid";
+  
+  private String uuid;
+
+  public static final String JSON_PROPERTY_ID = "id";
+  
+  private BigDecimal id;
+
+  public static final String JSON_PROPERTY_DEPRECATED_REF = "deprecatedRef";
+  
+  private DeprecatedObject deprecatedRef;
+
+  public static final String JSON_PROPERTY_BARS = "bars";
+  
+  private List<String> bars = null;
+
+  /**
+   * Get uuid
+   * @return uuid
+   **/
+  @JsonProperty(JSON_PROPERTY_UUID)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getUuid() {
+    return uuid;
+  }
+
+  /**
+   * Set uuid
+   */
+  @JsonProperty(JSON_PROPERTY_UUID)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setUuid(String uuid) {
+    this.uuid = uuid;
+  }
+
+  public ObjectWithDeprecatedFields uuid(String uuid) {
+    this.uuid = uuid;
+    return this;
+  }
+
+  /**
+   * Get id
+   * @return id
+   * @deprecated
+   **/
+  @Deprecated
+  @JsonProperty(JSON_PROPERTY_ID)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public BigDecimal getId() {
+    return id;
+  }
+
+  /**
+   * Set id
+   */
+  @JsonProperty(JSON_PROPERTY_ID)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setId(BigDecimal id) {
+    this.id = id;
+  }
+
+  public ObjectWithDeprecatedFields id(BigDecimal id) {
+    this.id = id;
+    return this;
+  }
+
+  /**
+   * Get deprecatedRef
+   * @return deprecatedRef
+   * @deprecated
+   **/
+  @Deprecated
+  @JsonProperty(JSON_PROPERTY_DEPRECATED_REF)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public DeprecatedObject getDeprecatedRef() {
+    return deprecatedRef;
+  }
+
+  /**
+   * Set deprecatedRef
+   */
+  @JsonProperty(JSON_PROPERTY_DEPRECATED_REF)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setDeprecatedRef(DeprecatedObject deprecatedRef) {
+    this.deprecatedRef = deprecatedRef;
+  }
+
+  public ObjectWithDeprecatedFields deprecatedRef(DeprecatedObject deprecatedRef) {
+    this.deprecatedRef = deprecatedRef;
+    return this;
+  }
+
+  /**
+   * Get bars
+   * @return bars
+   * @deprecated
+   **/
+  @Deprecated
+  @JsonProperty(JSON_PROPERTY_BARS)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public List<String> getBars() {
+    return bars;
+  }
+
+  /**
+   * Set bars
+   */
+  @JsonProperty(JSON_PROPERTY_BARS)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setBars(List<String> bars) {
+    this.bars = bars;
+  }
+
+  public ObjectWithDeprecatedFields bars(List<String> bars) {
+    this.bars = bars;
+    return this;
+  }
+
+  public ObjectWithDeprecatedFields addBarsItem(String barsItem) {
+    if (this.bars == null) {
+      this.bars = new ArrayList<>();
+    }
+    this.bars.add(barsItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ObjectWithDeprecatedFields {\n");
+    
+    sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
+    sb.append("    id: ").append(toIndentedString(id)).append("\n");
+    sb.append("    deprecatedRef: ").append(toIndentedString(deprecatedRef)).append("\n");
+    sb.append("    bars: ").append(toIndentedString(bars)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Order.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Order.java
index 97e82f85b21..271bd025d55 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Order.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Order.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -33,9 +33,6 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
   Order.JSON_PROPERTY_STATUS,
   Order.JSON_PROPERTY_COMPLETE
 })
-/**
-  * An order for a pets from the pet store
-  */
 
 public class Order  {
   
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/OuterComposite.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/OuterComposite.java
new file mode 100644
index 00000000000..2c75587b5b3
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/OuterComposite.java
@@ -0,0 +1,156 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.math.BigDecimal;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  OuterComposite.JSON_PROPERTY_MY_NUMBER,
+  OuterComposite.JSON_PROPERTY_MY_STRING,
+  OuterComposite.JSON_PROPERTY_MY_BOOLEAN
+})
+
+public class OuterComposite  {
+  
+  public static final String JSON_PROPERTY_MY_NUMBER = "my_number";
+  
+  private BigDecimal myNumber;
+
+  public static final String JSON_PROPERTY_MY_STRING = "my_string";
+  
+  private String myString;
+
+  public static final String JSON_PROPERTY_MY_BOOLEAN = "my_boolean";
+  
+  private Boolean myBoolean;
+
+  /**
+   * Get myNumber
+   * @return myNumber
+   **/
+  @JsonProperty(JSON_PROPERTY_MY_NUMBER)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public BigDecimal getMyNumber() {
+    return myNumber;
+  }
+
+  /**
+   * Set myNumber
+   */
+  @JsonProperty(JSON_PROPERTY_MY_NUMBER)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setMyNumber(BigDecimal myNumber) {
+    this.myNumber = myNumber;
+  }
+
+  public OuterComposite myNumber(BigDecimal myNumber) {
+    this.myNumber = myNumber;
+    return this;
+  }
+
+  /**
+   * Get myString
+   * @return myString
+   **/
+  @JsonProperty(JSON_PROPERTY_MY_STRING)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getMyString() {
+    return myString;
+  }
+
+  /**
+   * Set myString
+   */
+  @JsonProperty(JSON_PROPERTY_MY_STRING)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setMyString(String myString) {
+    this.myString = myString;
+  }
+
+  public OuterComposite myString(String myString) {
+    this.myString = myString;
+    return this;
+  }
+
+  /**
+   * Get myBoolean
+   * @return myBoolean
+   **/
+  @JsonProperty(JSON_PROPERTY_MY_BOOLEAN)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public Boolean getMyBoolean() {
+    return myBoolean;
+  }
+
+  /**
+   * Set myBoolean
+   */
+  @JsonProperty(JSON_PROPERTY_MY_BOOLEAN)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setMyBoolean(Boolean myBoolean) {
+    this.myBoolean = myBoolean;
+  }
+
+  public OuterComposite myBoolean(Boolean myBoolean) {
+    this.myBoolean = myBoolean;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class OuterComposite {\n");
+    
+    sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
+    sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
+    sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/OuterEnum.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/OuterEnum.java
new file mode 100644
index 00000000000..dac560c4dfc
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/OuterEnum.java
@@ -0,0 +1,58 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+
+/**
+ * Gets or Sets OuterEnum
+ */
+public enum OuterEnum {
+  
+  PLACED("placed"),
+  
+  APPROVED("approved"),
+  
+  DELIVERED("delivered");
+
+  private String value;
+
+  OuterEnum(String value) {
+    this.value = value;
+  }
+
+  @Override
+  @JsonValue
+  public String toString() {
+    return String.valueOf(value);
+  }
+
+  @JsonCreator
+  public static OuterEnum fromValue(String text) {
+    for (OuterEnum b : OuterEnum.values()) {
+      if (String.valueOf(b.value).equals(text)) {
+        return b;
+      }
+    }
+    throw new IllegalArgumentException("Unexpected value '" + text + "'");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/OuterEnumDefaultValue.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/OuterEnumDefaultValue.java
new file mode 100644
index 00000000000..11229e2d2f3
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/OuterEnumDefaultValue.java
@@ -0,0 +1,58 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+
+/**
+ * Gets or Sets OuterEnumDefaultValue
+ */
+public enum OuterEnumDefaultValue {
+  
+  PLACED("placed"),
+  
+  APPROVED("approved"),
+  
+  DELIVERED("delivered");
+
+  private String value;
+
+  OuterEnumDefaultValue(String value) {
+    this.value = value;
+  }
+
+  @Override
+  @JsonValue
+  public String toString() {
+    return String.valueOf(value);
+  }
+
+  @JsonCreator
+  public static OuterEnumDefaultValue fromValue(String text) {
+    for (OuterEnumDefaultValue b : OuterEnumDefaultValue.values()) {
+      if (String.valueOf(b.value).equals(text)) {
+        return b;
+      }
+    }
+    throw new IllegalArgumentException("Unexpected value '" + text + "'");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/OuterEnumInteger.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/OuterEnumInteger.java
new file mode 100644
index 00000000000..c987b34969d
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/OuterEnumInteger.java
@@ -0,0 +1,58 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+
+/**
+ * Gets or Sets OuterEnumInteger
+ */
+public enum OuterEnumInteger {
+  
+  NUMBER_0(0),
+  
+  NUMBER_1(1),
+  
+  NUMBER_2(2);
+
+  private Integer value;
+
+  OuterEnumInteger(Integer value) {
+    this.value = value;
+  }
+
+  @Override
+  @JsonValue
+  public String toString() {
+    return String.valueOf(value);
+  }
+
+  @JsonCreator
+  public static OuterEnumInteger fromValue(String text) {
+    for (OuterEnumInteger b : OuterEnumInteger.values()) {
+      if (String.valueOf(b.value).equals(text)) {
+        return b;
+      }
+    }
+    throw new IllegalArgumentException("Unexpected value '" + text + "'");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/OuterEnumIntegerDefaultValue.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/OuterEnumIntegerDefaultValue.java
new file mode 100644
index 00000000000..3d7397718ba
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/OuterEnumIntegerDefaultValue.java
@@ -0,0 +1,58 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+
+/**
+ * Gets or Sets OuterEnumIntegerDefaultValue
+ */
+public enum OuterEnumIntegerDefaultValue {
+  
+  NUMBER_0(0),
+  
+  NUMBER_1(1),
+  
+  NUMBER_2(2);
+
+  private Integer value;
+
+  OuterEnumIntegerDefaultValue(Integer value) {
+    this.value = value;
+  }
+
+  @Override
+  @JsonValue
+  public String toString() {
+    return String.valueOf(value);
+  }
+
+  @JsonCreator
+  public static OuterEnumIntegerDefaultValue fromValue(String text) {
+    for (OuterEnumIntegerDefaultValue b : OuterEnumIntegerDefaultValue.values()) {
+      if (String.valueOf(b.value).equals(text)) {
+        return b;
+      }
+    }
+    throw new IllegalArgumentException("Unexpected value '" + text + "'");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/OuterObjectWithEnumProperty.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/OuterObjectWithEnumProperty.java
new file mode 100644
index 00000000000..8a297681902
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/OuterObjectWithEnumProperty.java
@@ -0,0 +1,96 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.openapitools.client.model.OuterEnumInteger;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  OuterObjectWithEnumProperty.JSON_PROPERTY_VALUE
+})
+
+public class OuterObjectWithEnumProperty  {
+  
+  public static final String JSON_PROPERTY_VALUE = "value";
+  
+  private OuterEnumInteger value;
+
+  /**
+   * Get value
+   * @return value
+   **/
+  @JsonProperty(JSON_PROPERTY_VALUE)
+  @JsonInclude(value = JsonInclude.Include.ALWAYS)
+  public OuterEnumInteger getValue() {
+    return value;
+  }
+
+  /**
+   * Set value
+   */
+  @JsonProperty(JSON_PROPERTY_VALUE)
+  @JsonInclude(value = JsonInclude.Include.ALWAYS)
+  public void setValue(OuterEnumInteger value) {
+    this.value = value;
+  }
+
+  public OuterObjectWithEnumProperty value(OuterEnumInteger value) {
+    this.value = value;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class OuterObjectWithEnumProperty {\n");
+    
+    sb.append("    value: ").append(toIndentedString(value)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ParentWithNullable.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ParentWithNullable.java
new file mode 100644
index 00000000000..657f266e6db
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ParentWithNullable.java
@@ -0,0 +1,169 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonSubTypes;
+import com.fasterxml.jackson.annotation.JsonTypeInfo;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  ParentWithNullable.JSON_PROPERTY_TYPE,
+  ParentWithNullable.JSON_PROPERTY_NULLABLE_PROPERTY
+})
+
+@JsonIgnoreProperties(
+  value = "type", // ignore manually set type, it will be automatically generated by Jackson during serialization
+  allowSetters = true // allows the type to be set during deserialization
+)
+@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.PROPERTY, property = "type", visible = true)
+@JsonSubTypes({
+  @JsonSubTypes.Type(value = ChildWithNullable.class, name = "ChildWithNullable"),
+})
+
+public class ParentWithNullable  {
+  
+  public enum TypeEnum {
+
+    CHILD_WITH_NULLABLE(String.valueOf("ChildWithNullable"));
+
+
+    String value;
+
+    TypeEnum (String v) {
+        value = v;
+    }
+
+    @JsonValue
+    public String value() {
+        return value;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(value);
+    }
+
+    @JsonCreator
+        public static TypeEnum fromValue(String value) {
+            for (TypeEnum b : TypeEnum.values()) {
+                if (b.value.equals(value)) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        }
+  }
+
+  public static final String JSON_PROPERTY_TYPE = "type";
+  
+  private TypeEnum type;
+
+  public static final String JSON_PROPERTY_NULLABLE_PROPERTY = "nullableProperty";
+  
+  private String nullableProperty;
+
+  /**
+   * Get type
+   * @return type
+   **/
+  @JsonProperty(JSON_PROPERTY_TYPE)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public TypeEnum getType() {
+    return type;
+  }
+
+  /**
+   * Set type
+   */
+  @JsonProperty(JSON_PROPERTY_TYPE)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setType(TypeEnum type) {
+    this.type = type;
+  }
+
+  public ParentWithNullable type(TypeEnum type) {
+    this.type = type;
+    return this;
+  }
+
+  /**
+   * Get nullableProperty
+   * @return nullableProperty
+   **/
+  @JsonProperty(JSON_PROPERTY_NULLABLE_PROPERTY)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getNullableProperty() {
+    return nullableProperty;
+  }
+
+  /**
+   * Set nullableProperty
+   */
+  @JsonProperty(JSON_PROPERTY_NULLABLE_PROPERTY)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setNullableProperty(String nullableProperty) {
+    this.nullableProperty = nullableProperty;
+  }
+
+  public ParentWithNullable nullableProperty(String nullableProperty) {
+    this.nullableProperty = nullableProperty;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ParentWithNullable {\n");
+    
+    sb.append("    type: ").append(toIndentedString(type)).append("\n");
+    sb.append("    nullableProperty: ").append(toIndentedString(nullableProperty)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Pet.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Pet.java
index af204ae6075..f53d512ee9c 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Pet.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Pet.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -21,9 +21,12 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonTypeName;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.LinkedHashSet;
 import java.util.List;
+import java.util.Set;
 import org.openapitools.client.model.Category;
 import org.openapitools.client.model.Tag;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
@@ -37,9 +40,6 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
   Pet.JSON_PROPERTY_TAGS,
   Pet.JSON_PROPERTY_STATUS
 })
-/**
-  * A pet for sale in the pet store
-  */
 
 public class Pet  {
   
@@ -57,7 +57,7 @@ public class Pet  {
 
   public static final String JSON_PROPERTY_PHOTO_URLS = "photoUrls";
   
-  private List<String> photoUrls = new ArrayList<>();
+  private Set<String> photoUrls = new LinkedHashSet<>();
 
   public static final String JSON_PROPERTY_TAGS = "tags";
   
@@ -180,27 +180,28 @@ public class Pet  {
    **/
   @JsonProperty(JSON_PROPERTY_PHOTO_URLS)
   @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public List<String> getPhotoUrls() {
+  public Set<String> getPhotoUrls() {
     return photoUrls;
   }
 
   /**
    * Set photoUrls
    */
+  @JsonDeserialize(as = LinkedHashSet.class)
   @JsonProperty(JSON_PROPERTY_PHOTO_URLS)
   @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public void setPhotoUrls(List<String> photoUrls) {
+  public void setPhotoUrls(Set<String> photoUrls) {
     this.photoUrls = photoUrls;
   }
 
-  public Pet photoUrls(List<String> photoUrls) {
+  public Pet photoUrls(Set<String> photoUrls) {
     this.photoUrls = photoUrls;
     return this;
   }
 
   public Pet addPhotoUrlsItem(String photoUrlsItem) {
     if (this.photoUrls == null) {
-      this.photoUrls = new ArrayList<>();
+      this.photoUrls = new LinkedHashSet<>();
     }
     this.photoUrls.add(photoUrlsItem);
     return this;
@@ -241,9 +242,7 @@ public class Pet  {
   /**
    * pet status in the store
    * @return status
-   * @deprecated
    **/
-  @Deprecated
   @JsonProperty(JSON_PROPERTY_STATUS)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
   public StatusEnum getStatus() {
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ReadOnlyFirst.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ReadOnlyFirst.java
new file mode 100644
index 00000000000..12380db2a61
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/ReadOnlyFirst.java
@@ -0,0 +1,122 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  ReadOnlyFirst.JSON_PROPERTY_BAR,
+  ReadOnlyFirst.JSON_PROPERTY_BAZ
+})
+
+public class ReadOnlyFirst  {
+  
+  public static final String JSON_PROPERTY_BAR = "bar";
+  
+  private String bar;
+
+  public static final String JSON_PROPERTY_BAZ = "baz";
+  
+  private String baz;
+
+  public ReadOnlyFirst() {
+  }
+
+ @JsonCreator
+  public ReadOnlyFirst(
+    @JsonProperty(value = JSON_PROPERTY_BAR) String bar
+  ) {
+    this.bar = bar;
+  }
+  
+  /**
+   * Get bar
+   * @return bar
+   **/
+  @JsonProperty(JSON_PROPERTY_BAR)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getBar() {
+    return bar;
+  }
+
+
+  /**
+   * Get baz
+   * @return baz
+   **/
+  @JsonProperty(JSON_PROPERTY_BAZ)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getBaz() {
+    return baz;
+  }
+
+  /**
+   * Set baz
+   */
+  @JsonProperty(JSON_PROPERTY_BAZ)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setBaz(String baz) {
+    this.baz = baz;
+  }
+
+  public ReadOnlyFirst baz(String baz) {
+    this.baz = baz;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ReadOnlyFirst {\n");
+    
+    sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
+    sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/SingleRefType.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/SingleRefType.java
new file mode 100644
index 00000000000..de8e06fff89
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/SingleRefType.java
@@ -0,0 +1,56 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+
+/**
+ * Gets or Sets SingleRefType
+ */
+public enum SingleRefType {
+  
+  ADMIN("admin"),
+  
+  USER("user");
+
+  private String value;
+
+  SingleRefType(String value) {
+    this.value = value;
+  }
+
+  @Override
+  @JsonValue
+  public String toString() {
+    return String.valueOf(value);
+  }
+
+  @JsonCreator
+  public static SingleRefType fromValue(String text) {
+    for (SingleRefType b : SingleRefType.values()) {
+      if (String.valueOf(b.value).equals(text)) {
+        return b;
+      }
+    }
+    throw new IllegalArgumentException("Unexpected value '" + text + "'");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/SpecialModelName.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/SpecialModelName.java
new file mode 100644
index 00000000000..36ceec5f548
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/SpecialModelName.java
@@ -0,0 +1,96 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  SpecialModelName.JSON_PROPERTY_$_SPECIAL_PROPERTY_NAME
+})
+@JsonTypeName("_special_model.name_")
+
+public class SpecialModelName  {
+  
+  public static final String JSON_PROPERTY_$_SPECIAL_PROPERTY_NAME = "$special[property.name]";
+  
+  private Long $specialPropertyName;
+
+  /**
+   * Get $specialPropertyName
+   * @return $specialPropertyName
+   **/
+  @JsonProperty(JSON_PROPERTY_$_SPECIAL_PROPERTY_NAME)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public Long get$SpecialPropertyName() {
+    return $specialPropertyName;
+  }
+
+  /**
+   * Set $specialPropertyName
+   */
+  @JsonProperty(JSON_PROPERTY_$_SPECIAL_PROPERTY_NAME)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void set$SpecialPropertyName(Long $specialPropertyName) {
+    this.$specialPropertyName = $specialPropertyName;
+  }
+
+  public SpecialModelName $specialPropertyName(Long $specialPropertyName) {
+    this.$specialPropertyName = $specialPropertyName;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class SpecialModelName {\n");
+    
+    sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Tag.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Tag.java
index 90220db6913..b7968d2ea3b 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Tag.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/Tag.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -28,9 +28,6 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
   Tag.JSON_PROPERTY_ID,
   Tag.JSON_PROPERTY_NAME
 })
-/**
-  * A tag for a pet
-  */
 
 public class Tag  {
   
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/TestInlineFreeformAdditionalPropertiesRequest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/TestInlineFreeformAdditionalPropertiesRequest.java
new file mode 100644
index 00000000000..27445b752c1
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/TestInlineFreeformAdditionalPropertiesRequest.java
@@ -0,0 +1,98 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.util.HashMap;
+import java.util.Map;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+@JsonPropertyOrder({
+  TestInlineFreeformAdditionalPropertiesRequest.JSON_PROPERTY_SOME_PROPERTY
+})
+@JsonTypeName("testInlineFreeformAdditionalProperties_request")
+
+public class TestInlineFreeformAdditionalPropertiesRequest extends HashMap<String, Object> {
+  
+  public static final String JSON_PROPERTY_SOME_PROPERTY = "someProperty";
+  
+  private String someProperty;
+
+  /**
+   * Get someProperty
+   * @return someProperty
+   **/
+  @JsonProperty(JSON_PROPERTY_SOME_PROPERTY)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public String getSomeProperty() {
+    return someProperty;
+  }
+
+  /**
+   * Set someProperty
+   */
+  @JsonProperty(JSON_PROPERTY_SOME_PROPERTY)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setSomeProperty(String someProperty) {
+    this.someProperty = someProperty;
+  }
+
+  public TestInlineFreeformAdditionalPropertiesRequest someProperty(String someProperty) {
+    this.someProperty = someProperty;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+  }
+
+  @Override
+  public int hashCode() {
+    return HashCodeBuilder.reflectionHashCode(this);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TestInlineFreeformAdditionalPropertiesRequest {\n");
+    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+    sb.append("    someProperty: ").append(toIndentedString(someProperty)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/User.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/User.java
index 555e1e3d281..14db71eafc4 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/User.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/main/java/org/openapitools/client/model/User.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -34,9 +34,6 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
   User.JSON_PROPERTY_PHONE,
   User.JSON_PROPERTY_USER_STATUS
 })
-/**
-  * A User who is purchasing from the pet store
-  */
 
 public class User  {
   
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/api/AnotherFakeApiTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/api/AnotherFakeApiTest.java
new file mode 100644
index 00000000000..0941a798c10
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/api/AnotherFakeApiTest.java
@@ -0,0 +1,65 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.api;
+
+import org.openapitools.client.model.Client;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.Assertions;
+
+import org.eclipse.microprofile.rest.client.RestClientBuilder;
+
+import java.net.URL;
+import java.net.MalformedURLException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * OpenAPI Petstore Test
+ *
+ * API tests for AnotherFakeApi
+ */
+public class AnotherFakeApiTest {
+
+    private AnotherFakeApi client;
+    private String baseUrl = "http://localhost:9080";
+
+    @BeforeEach
+    public void setup() throws MalformedURLException {
+        // TODO initialize the client
+    }
+
+    
+    /**
+     * To test special tags
+     *
+     * To test special tags and operation ID starting with number
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void call123testSpecialTagsTest() {
+        // TODO: test validations
+        Client client = null;
+        //Client response = api.call123testSpecialTags(client);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/api/DefaultApiTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/api/DefaultApiTest.java
new file mode 100644
index 00000000000..f4e1951dc15
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/api/DefaultApiTest.java
@@ -0,0 +1,60 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.api;
+
+import org.openapitools.client.model.FooGetDefaultResponse;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.Assertions;
+
+import org.eclipse.microprofile.rest.client.RestClientBuilder;
+
+import java.net.URL;
+import java.net.MalformedURLException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * OpenAPI Petstore Test
+ *
+ * API tests for DefaultApi
+ */
+public class DefaultApiTest {
+
+    private DefaultApi client;
+    private String baseUrl = "http://localhost:9080";
+
+    @BeforeEach
+    public void setup() throws MalformedURLException {
+        // TODO initialize the client
+    }
+
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fooGetTest() {
+        // TODO: test validations
+        //FooGetDefaultResponse response = api.fooGet();
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/api/FakeApiTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/api/FakeApiTest.java
new file mode 100644
index 00000000000..26ec6bf6711
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/api/FakeApiTest.java
@@ -0,0 +1,446 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.api;
+
+import java.math.BigDecimal;
+import org.openapitools.client.model.ChildWithNullable;
+import org.openapitools.client.model.Client;
+import java.util.Date;
+import org.openapitools.client.model.EnumClass;
+import org.openapitools.client.model.FakeBigDecimalMap200Response;
+import java.io.File;
+import org.openapitools.client.model.FileSchemaTestClass;
+import org.openapitools.client.model.HealthCheckResult;
+import org.openapitools.client.model.OuterComposite;
+import org.openapitools.client.model.OuterObjectWithEnumProperty;
+import org.openapitools.client.model.Pet;
+import org.openapitools.client.model.TestInlineFreeformAdditionalPropertiesRequest;
+import org.openapitools.client.model.User;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.Assertions;
+
+import org.eclipse.microprofile.rest.client.RestClientBuilder;
+
+import java.net.URL;
+import java.net.MalformedURLException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * OpenAPI Petstore Test
+ *
+ * API tests for FakeApi
+ */
+public class FakeApiTest {
+
+    private FakeApi client;
+    private String baseUrl = "http://localhost:9080";
+
+    @BeforeEach
+    public void setup() throws MalformedURLException {
+        // TODO initialize the client
+    }
+
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fakeBigDecimalMapTest() {
+        // TODO: test validations
+        //FakeBigDecimalMap200Response response = api.fakeBigDecimalMap();
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * Health check endpoint
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fakeHealthGetTest() {
+        // TODO: test validations
+        //HealthCheckResult response = api.fakeHealthGet();
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * test http signature authentication
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fakeHttpSignatureTestTest() {
+        // TODO: test validations
+        Pet pet = null;
+        String query1 = null;
+        String header1 = null;
+        //api.fakeHttpSignatureTest(pet, query1, header1);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fakeOuterBooleanSerializeTest() {
+        // TODO: test validations
+        Boolean body = null;
+        //Boolean response = api.fakeOuterBooleanSerialize(body);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fakeOuterCompositeSerializeTest() {
+        // TODO: test validations
+        OuterComposite outerComposite = null;
+        //OuterComposite response = api.fakeOuterCompositeSerialize(outerComposite);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fakeOuterNumberSerializeTest() {
+        // TODO: test validations
+        BigDecimal body = null;
+        //BigDecimal response = api.fakeOuterNumberSerialize(body);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fakeOuterStringSerializeTest() {
+        // TODO: test validations
+        String body = null;
+        //String response = api.fakeOuterStringSerialize(body);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fakePropertyEnumIntegerSerializeTest() {
+        // TODO: test validations
+        OuterObjectWithEnumProperty outerObjectWithEnumProperty = null;
+        //OuterObjectWithEnumProperty response = api.fakePropertyEnumIntegerSerialize(outerObjectWithEnumProperty);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * test referenced additionalProperties
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testAdditionalPropertiesReferenceTest() {
+        // TODO: test validations
+        Map<String, Object> requestBody = null;
+        //api.testAdditionalPropertiesReference(requestBody);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testBodyWithBinaryTest() {
+        // TODO: test validations
+        org.apache.cxf.jaxrs.ext.multipart.Attachment body = null;
+        //api.testBodyWithBinary(body);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testBodyWithFileSchemaTest() {
+        // TODO: test validations
+        FileSchemaTestClass fileSchemaTestClass = null;
+        //api.testBodyWithFileSchema(fileSchemaTestClass);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testBodyWithQueryParamsTest() {
+        // TODO: test validations
+        String query = null;
+        User user = null;
+        //api.testBodyWithQueryParams(query, user);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * To test \&quot;client\&quot; model
+     *
+     * To test \&quot;client\&quot; model
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testClientModelTest() {
+        // TODO: test validations
+        Client client = null;
+        //Client response = api.testClientModel(client);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * 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 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testEndpointParametersTest() {
+        // TODO: test validations
+        BigDecimal number = null;
+        Double _double = null;
+        String patternWithoutDelimiter = null;
+        byte[] _byte = null;
+        Integer integer = null;
+        Integer int32 = null;
+        Long int64 = null;
+        Float _float = null;
+        String string = null;
+        org.apache.cxf.jaxrs.ext.multipart.Attachment binary = null;
+        Date date = null;
+        Date dateTime = null;
+        String password = null;
+        String paramCallback = null;
+        //api.testEndpointParameters(number, _double, patternWithoutDelimiter, _byte, integer, int32, int64, _float, string, binary, date, dateTime, password, paramCallback);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * To test enum parameters
+     *
+     * To test enum parameters
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testEnumParametersTest() {
+        // TODO: test validations
+        List<String> enumHeaderStringArray = null;
+        String enumHeaderString = null;
+        List<String> enumQueryStringArray = null;
+        String enumQueryString = null;
+        Integer enumQueryInteger = null;
+        Double enumQueryDouble = null;
+        List<EnumClass> enumQueryModelArray = null;
+        List<String> enumFormStringArray = null;
+        String enumFormString = null;
+        //api.testEnumParameters(enumHeaderStringArray, enumHeaderString, enumQueryStringArray, enumQueryString, enumQueryInteger, enumQueryDouble, enumQueryModelArray, enumFormStringArray, enumFormString);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * Fake endpoint to test group parameters (optional)
+     *
+     * Fake endpoint to test group parameters (optional)
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testGroupParametersTest() {
+        // TODO: test validations
+        Integer requiredStringGroup = null;
+        Boolean requiredBooleanGroup = null;
+        Long requiredInt64Group = null;
+        Integer stringGroup = null;
+        Boolean booleanGroup = null;
+        Long int64Group = null;
+        //api.testGroupParameters(requiredStringGroup, requiredBooleanGroup, requiredInt64Group, stringGroup, booleanGroup, int64Group);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * test inline additionalProperties
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testInlineAdditionalPropertiesTest() {
+        // TODO: test validations
+        Map<String, String> requestBody = null;
+        //api.testInlineAdditionalProperties(requestBody);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * test inline free-form additionalProperties
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testInlineFreeformAdditionalPropertiesTest() {
+        // TODO: test validations
+        TestInlineFreeformAdditionalPropertiesRequest testInlineFreeformAdditionalPropertiesRequest = null;
+        //api.testInlineFreeformAdditionalProperties(testInlineFreeformAdditionalPropertiesRequest);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * test json serialization of form data
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testJsonFormDataTest() {
+        // TODO: test validations
+        String param = null;
+        String param2 = null;
+        //api.testJsonFormData(param, param2);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * test nullable parent property
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testNullableTest() {
+        // TODO: test validations
+        ChildWithNullable childWithNullable = null;
+        //api.testNullable(childWithNullable);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testQueryParameterCollectionFormatTest() {
+        // TODO: test validations
+        List<String> pipe = null;
+        List<String> ioutil = null;
+        List<String> http = null;
+        List<String> url = null;
+        List<String> context = null;
+        String allowEmpty = null;
+        Map<String, String> language = null;
+        //api.testQueryParameterCollectionFormat(pipe, ioutil, http, url, context, allowEmpty, language);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * test referenced string map
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testStringMapReferenceTest() {
+        // TODO: test validations
+        Map<String, String> requestBody = null;
+        //api.testStringMapReference(requestBody);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/api/FakeClassnameTags123ApiTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/api/FakeClassnameTags123ApiTest.java
new file mode 100644
index 00000000000..ada30ee8f95
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/api/FakeClassnameTags123ApiTest.java
@@ -0,0 +1,65 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.api;
+
+import org.openapitools.client.model.Client;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.Assertions;
+
+import org.eclipse.microprofile.rest.client.RestClientBuilder;
+
+import java.net.URL;
+import java.net.MalformedURLException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * OpenAPI Petstore Test
+ *
+ * API tests for FakeClassnameTags123Api
+ */
+public class FakeClassnameTags123ApiTest {
+
+    private FakeClassnameTags123Api client;
+    private String baseUrl = "http://localhost:9080";
+
+    @BeforeEach
+    public void setup() throws MalformedURLException {
+        // TODO initialize the client
+    }
+
+    
+    /**
+     * To test class name in snake case
+     *
+     * To test class name in snake case
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testClassnameTest() {
+        // TODO: test validations
+        Client client = null;
+        //Client response = api.testClassname(client);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/AdditionalPropertiesClassTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/AdditionalPropertiesClassTest.java
new file mode 100644
index 00000000000..5b42763a794
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/AdditionalPropertiesClassTest.java
@@ -0,0 +1,57 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.util.HashMap;
+import java.util.Map;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for AdditionalPropertiesClass
+ */
+class AdditionalPropertiesClassTest {
+    private final AdditionalPropertiesClass model = new AdditionalPropertiesClass();
+
+    /**
+     * Model tests for AdditionalPropertiesClass
+     */
+    @Test
+    void testAdditionalPropertiesClass() {
+        // TODO: test AdditionalPropertiesClass
+    }
+
+    /**
+     * Test the property 'mapProperty'
+     */
+    @Test
+    void mapPropertyTest() {
+        // TODO: test mapProperty
+    }
+
+    /**
+     * Test the property 'mapOfMapProperty'
+     */
+    @Test
+    void mapOfMapPropertyTest() {
+        // TODO: test mapOfMapProperty
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/AllOfWithSingleRefTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/AllOfWithSingleRefTest.java
new file mode 100644
index 00000000000..6b37cf50761
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/AllOfWithSingleRefTest.java
@@ -0,0 +1,56 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.openapitools.client.model.SingleRefType;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for AllOfWithSingleRef
+ */
+class AllOfWithSingleRefTest {
+    private final AllOfWithSingleRef model = new AllOfWithSingleRef();
+
+    /**
+     * Model tests for AllOfWithSingleRef
+     */
+    @Test
+    void testAllOfWithSingleRef() {
+        // TODO: test AllOfWithSingleRef
+    }
+
+    /**
+     * Test the property 'username'
+     */
+    @Test
+    void usernameTest() {
+        // TODO: test username
+    }
+
+    /**
+     * Test the property 'singleRefType'
+     */
+    @Test
+    void singleRefTypeTest() {
+        // TODO: test singleRefType
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/AnimalTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/AnimalTest.java
new file mode 100644
index 00000000000..73732a3e5c2
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/AnimalTest.java
@@ -0,0 +1,58 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonSubTypes;
+import com.fasterxml.jackson.annotation.JsonTypeInfo;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for Animal
+ */
+class AnimalTest {
+    private final Animal model = new Animal();
+
+    /**
+     * Model tests for Animal
+     */
+    @Test
+    void testAnimal() {
+        // TODO: test Animal
+    }
+
+    /**
+     * Test the property 'className'
+     */
+    @Test
+    void classNameTest() {
+        // TODO: test className
+    }
+
+    /**
+     * Test the property 'color'
+     */
+    @Test
+    void colorTest() {
+        // TODO: test color
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnlyTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnlyTest.java
new file mode 100644
index 00000000000..2825e20e5bd
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnlyTest.java
@@ -0,0 +1,51 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ArrayOfArrayOfNumberOnly
+ */
+class ArrayOfArrayOfNumberOnlyTest {
+    private final ArrayOfArrayOfNumberOnly model = new ArrayOfArrayOfNumberOnly();
+
+    /**
+     * Model tests for ArrayOfArrayOfNumberOnly
+     */
+    @Test
+    void testArrayOfArrayOfNumberOnly() {
+        // TODO: test ArrayOfArrayOfNumberOnly
+    }
+
+    /**
+     * Test the property 'arrayArrayNumber'
+     */
+    @Test
+    void arrayArrayNumberTest() {
+        // TODO: test arrayArrayNumber
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ArrayOfNumberOnlyTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ArrayOfNumberOnlyTest.java
new file mode 100644
index 00000000000..18277c8e6f5
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ArrayOfNumberOnlyTest.java
@@ -0,0 +1,51 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ArrayOfNumberOnly
+ */
+class ArrayOfNumberOnlyTest {
+    private final ArrayOfNumberOnly model = new ArrayOfNumberOnly();
+
+    /**
+     * Model tests for ArrayOfNumberOnly
+     */
+    @Test
+    void testArrayOfNumberOnly() {
+        // TODO: test ArrayOfNumberOnly
+    }
+
+    /**
+     * Test the property 'arrayNumber'
+     */
+    @Test
+    void arrayNumberTest() {
+        // TODO: test arrayNumber
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ArrayTestTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ArrayTestTest.java
new file mode 100644
index 00000000000..9620b7ff72e
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ArrayTestTest.java
@@ -0,0 +1,67 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.openapitools.client.model.ReadOnlyFirst;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ArrayTest
+ */
+class ArrayTestTest {
+    private final ArrayTest model = new ArrayTest();
+
+    /**
+     * Model tests for ArrayTest
+     */
+    @Test
+    void testArrayTest() {
+        // TODO: test ArrayTest
+    }
+
+    /**
+     * Test the property 'arrayOfString'
+     */
+    @Test
+    void arrayOfStringTest() {
+        // TODO: test arrayOfString
+    }
+
+    /**
+     * Test the property 'arrayArrayOfInteger'
+     */
+    @Test
+    void arrayArrayOfIntegerTest() {
+        // TODO: test arrayArrayOfInteger
+    }
+
+    /**
+     * Test the property 'arrayArrayOfModel'
+     */
+    @Test
+    void arrayArrayOfModelTest() {
+        // TODO: test arrayArrayOfModel
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/CapitalizationTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/CapitalizationTest.java
new file mode 100644
index 00000000000..409bf0546f6
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/CapitalizationTest.java
@@ -0,0 +1,87 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for Capitalization
+ */
+class CapitalizationTest {
+    private final Capitalization model = new Capitalization();
+
+    /**
+     * Model tests for Capitalization
+     */
+    @Test
+    void testCapitalization() {
+        // TODO: test Capitalization
+    }
+
+    /**
+     * Test the property 'smallCamel'
+     */
+    @Test
+    void smallCamelTest() {
+        // TODO: test smallCamel
+    }
+
+    /**
+     * Test the property 'capitalCamel'
+     */
+    @Test
+    void capitalCamelTest() {
+        // TODO: test capitalCamel
+    }
+
+    /**
+     * Test the property 'smallSnake'
+     */
+    @Test
+    void smallSnakeTest() {
+        // TODO: test smallSnake
+    }
+
+    /**
+     * Test the property 'capitalSnake'
+     */
+    @Test
+    void capitalSnakeTest() {
+        // TODO: test capitalSnake
+    }
+
+    /**
+     * Test the property 'scAETHFlowPoints'
+     */
+    @Test
+    void scAETHFlowPointsTest() {
+        // TODO: test scAETHFlowPoints
+    }
+
+    /**
+     * Test the property 'ATT_NAME'
+     */
+    @Test
+    void ATT_NAMETest() {
+        // TODO: test ATT_NAME
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/CatTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/CatTest.java
new file mode 100644
index 00000000000..a94308d1ce6
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/CatTest.java
@@ -0,0 +1,67 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonSubTypes;
+import com.fasterxml.jackson.annotation.JsonTypeInfo;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.openapitools.client.model.Animal;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for Cat
+ */
+class CatTest {
+    private final Cat model = new Cat();
+
+    /**
+     * Model tests for Cat
+     */
+    @Test
+    void testCat() {
+        // TODO: test Cat
+    }
+
+    /**
+     * Test the property 'className'
+     */
+    @Test
+    void classNameTest() {
+        // TODO: test className
+    }
+
+    /**
+     * Test the property 'color'
+     */
+    @Test
+    void colorTest() {
+        // TODO: test color
+    }
+
+    /**
+     * Test the property 'declawed'
+     */
+    @Test
+    void declawedTest() {
+        // TODO: test declawed
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/CategoryTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/CategoryTest.java
index c90a5364a5f..950acb4b8a6 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/CategoryTest.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/CategoryTest.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ChildWithNullableTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ChildWithNullableTest.java
new file mode 100644
index 00000000000..dacd3d339e4
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ChildWithNullableTest.java
@@ -0,0 +1,67 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonSubTypes;
+import com.fasterxml.jackson.annotation.JsonTypeInfo;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.openapitools.client.model.ParentWithNullable;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ChildWithNullable
+ */
+class ChildWithNullableTest {
+    private final ChildWithNullable model = new ChildWithNullable();
+
+    /**
+     * Model tests for ChildWithNullable
+     */
+    @Test
+    void testChildWithNullable() {
+        // TODO: test ChildWithNullable
+    }
+
+    /**
+     * Test the property 'type'
+     */
+    @Test
+    void typeTest() {
+        // TODO: test type
+    }
+
+    /**
+     * Test the property 'nullableProperty'
+     */
+    @Test
+    void nullablePropertyTest() {
+        // TODO: test nullableProperty
+    }
+
+    /**
+     * Test the property 'otherProperty'
+     */
+    @Test
+    void otherPropertyTest() {
+        // TODO: test otherProperty
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ClassModelTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ClassModelTest.java
new file mode 100644
index 00000000000..e37d9ccd3ec
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ClassModelTest.java
@@ -0,0 +1,47 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ClassModel
+ */
+class ClassModelTest {
+    private final ClassModel model = new ClassModel();
+
+    /**
+     * Model tests for ClassModel
+     */
+    @Test
+    void testClassModel() {
+        // TODO: test ClassModel
+    }
+
+    /**
+     * Test the property 'propertyClass'
+     */
+    @Test
+    void propertyClassTest() {
+        // TODO: test propertyClass
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ClientTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ClientTest.java
new file mode 100644
index 00000000000..90ecebd0f03
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ClientTest.java
@@ -0,0 +1,47 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for Client
+ */
+class ClientTest {
+    private final Client model = new Client();
+
+    /**
+     * Model tests for Client
+     */
+    @Test
+    void testClient() {
+        // TODO: test Client
+    }
+
+    /**
+     * Test the property 'client'
+     */
+    @Test
+    void clientTest() {
+        // TODO: test client
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/DeprecatedObjectTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/DeprecatedObjectTest.java
new file mode 100644
index 00000000000..bf67d23a6e3
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/DeprecatedObjectTest.java
@@ -0,0 +1,47 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for DeprecatedObject
+ */
+class DeprecatedObjectTest {
+    private final DeprecatedObject model = new DeprecatedObject();
+
+    /**
+     * Model tests for DeprecatedObject
+     */
+    @Test
+    void testDeprecatedObject() {
+        // TODO: test DeprecatedObject
+    }
+
+    /**
+     * Test the property 'name'
+     */
+    @Test
+    void nameTest() {
+        // TODO: test name
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/DogTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/DogTest.java
new file mode 100644
index 00000000000..27a294b59e9
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/DogTest.java
@@ -0,0 +1,67 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonSubTypes;
+import com.fasterxml.jackson.annotation.JsonTypeInfo;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.openapitools.client.model.Animal;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for Dog
+ */
+class DogTest {
+    private final Dog model = new Dog();
+
+    /**
+     * Model tests for Dog
+     */
+    @Test
+    void testDog() {
+        // TODO: test Dog
+    }
+
+    /**
+     * Test the property 'className'
+     */
+    @Test
+    void classNameTest() {
+        // TODO: test className
+    }
+
+    /**
+     * Test the property 'color'
+     */
+    @Test
+    void colorTest() {
+        // TODO: test color
+    }
+
+    /**
+     * Test the property 'breed'
+     */
+    @Test
+    void breedTest() {
+        // TODO: test breed
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/EnumArraysTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/EnumArraysTest.java
new file mode 100644
index 00000000000..6f674ef9de4
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/EnumArraysTest.java
@@ -0,0 +1,58 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for EnumArrays
+ */
+class EnumArraysTest {
+    private final EnumArrays model = new EnumArrays();
+
+    /**
+     * Model tests for EnumArrays
+     */
+    @Test
+    void testEnumArrays() {
+        // TODO: test EnumArrays
+    }
+
+    /**
+     * Test the property 'justSymbol'
+     */
+    @Test
+    void justSymbolTest() {
+        // TODO: test justSymbol
+    }
+
+    /**
+     * Test the property 'arrayEnum'
+     */
+    @Test
+    void arrayEnumTest() {
+        // TODO: test arrayEnum
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/EnumClassTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/EnumClassTest.java
new file mode 100644
index 00000000000..1b428fce8da
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/EnumClassTest.java
@@ -0,0 +1,32 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for EnumClass
+ */
+class EnumClassTest {
+    /**
+     * Model tests for EnumClass
+     */
+    @Test
+    void testEnumClass() {
+        // TODO: test EnumClass
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/EnumTestTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/EnumTestTest.java
new file mode 100644
index 00000000000..562455c24ac
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/EnumTestTest.java
@@ -0,0 +1,107 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.openapitools.client.model.OuterEnum;
+import org.openapitools.client.model.OuterEnumDefaultValue;
+import org.openapitools.client.model.OuterEnumInteger;
+import org.openapitools.client.model.OuterEnumIntegerDefaultValue;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for EnumTest
+ */
+class EnumTestTest {
+    private final EnumTest model = new EnumTest();
+
+    /**
+     * Model tests for EnumTest
+     */
+    @Test
+    void testEnumTest() {
+        // TODO: test EnumTest
+    }
+
+    /**
+     * Test the property 'enumString'
+     */
+    @Test
+    void enumStringTest() {
+        // TODO: test enumString
+    }
+
+    /**
+     * Test the property 'enumStringRequired'
+     */
+    @Test
+    void enumStringRequiredTest() {
+        // TODO: test enumStringRequired
+    }
+
+    /**
+     * Test the property 'enumInteger'
+     */
+    @Test
+    void enumIntegerTest() {
+        // TODO: test enumInteger
+    }
+
+    /**
+     * Test the property 'enumNumber'
+     */
+    @Test
+    void enumNumberTest() {
+        // TODO: test enumNumber
+    }
+
+    /**
+     * Test the property 'outerEnum'
+     */
+    @Test
+    void outerEnumTest() {
+        // TODO: test outerEnum
+    }
+
+    /**
+     * Test the property 'outerEnumInteger'
+     */
+    @Test
+    void outerEnumIntegerTest() {
+        // TODO: test outerEnumInteger
+    }
+
+    /**
+     * Test the property 'outerEnumDefaultValue'
+     */
+    @Test
+    void outerEnumDefaultValueTest() {
+        // TODO: test outerEnumDefaultValue
+    }
+
+    /**
+     * Test the property 'outerEnumIntegerDefaultValue'
+     */
+    @Test
+    void outerEnumIntegerDefaultValueTest() {
+        // TODO: test outerEnumIntegerDefaultValue
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/FakeBigDecimalMap200ResponseTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/FakeBigDecimalMap200ResponseTest.java
new file mode 100644
index 00000000000..569c7e9d480
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/FakeBigDecimalMap200ResponseTest.java
@@ -0,0 +1,58 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.math.BigDecimal;
+import java.util.HashMap;
+import java.util.Map;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for FakeBigDecimalMap200Response
+ */
+class FakeBigDecimalMap200ResponseTest {
+    private final FakeBigDecimalMap200Response model = new FakeBigDecimalMap200Response();
+
+    /**
+     * Model tests for FakeBigDecimalMap200Response
+     */
+    @Test
+    void testFakeBigDecimalMap200Response() {
+        // TODO: test FakeBigDecimalMap200Response
+    }
+
+    /**
+     * Test the property 'someId'
+     */
+    @Test
+    void someIdTest() {
+        // TODO: test someId
+    }
+
+    /**
+     * Test the property 'someMap'
+     */
+    @Test
+    void someMapTest() {
+        // TODO: test someMap
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/FileSchemaTestClassTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/FileSchemaTestClassTest.java
new file mode 100644
index 00000000000..61a284fbc62
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/FileSchemaTestClassTest.java
@@ -0,0 +1,59 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.openapitools.client.model.ModelFile;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for FileSchemaTestClass
+ */
+class FileSchemaTestClassTest {
+    private final FileSchemaTestClass model = new FileSchemaTestClass();
+
+    /**
+     * Model tests for FileSchemaTestClass
+     */
+    @Test
+    void testFileSchemaTestClass() {
+        // TODO: test FileSchemaTestClass
+    }
+
+    /**
+     * Test the property '_file'
+     */
+    @Test
+    void _fileTest() {
+        // TODO: test _file
+    }
+
+    /**
+     * Test the property 'files'
+     */
+    @Test
+    void filesTest() {
+        // TODO: test files
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/FooGetDefaultResponseTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/FooGetDefaultResponseTest.java
new file mode 100644
index 00000000000..c00504758c9
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/FooGetDefaultResponseTest.java
@@ -0,0 +1,48 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.openapitools.client.model.Foo;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for FooGetDefaultResponse
+ */
+class FooGetDefaultResponseTest {
+    private final FooGetDefaultResponse model = new FooGetDefaultResponse();
+
+    /**
+     * Model tests for FooGetDefaultResponse
+     */
+    @Test
+    void testFooGetDefaultResponse() {
+        // TODO: test FooGetDefaultResponse
+    }
+
+    /**
+     * Test the property 'string'
+     */
+    @Test
+    void stringTest() {
+        // TODO: test string
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/FooTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/FooTest.java
new file mode 100644
index 00000000000..a1a2acb55d7
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/FooTest.java
@@ -0,0 +1,47 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for Foo
+ */
+class FooTest {
+    private final Foo model = new Foo();
+
+    /**
+     * Model tests for Foo
+     */
+    @Test
+    void testFoo() {
+        // TODO: test Foo
+    }
+
+    /**
+     * Test the property 'bar'
+     */
+    @Test
+    void barTest() {
+        // TODO: test bar
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/FormatTestTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/FormatTestTest.java
new file mode 100644
index 00000000000..1348cb47e2e
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/FormatTestTest.java
@@ -0,0 +1,171 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.io.File;
+import java.math.BigDecimal;
+import java.util.Date;
+import java.util.UUID;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for FormatTest
+ */
+class FormatTestTest {
+    private final FormatTest model = new FormatTest();
+
+    /**
+     * Model tests for FormatTest
+     */
+    @Test
+    void testFormatTest() {
+        // TODO: test FormatTest
+    }
+
+    /**
+     * Test the property 'integer'
+     */
+    @Test
+    void integerTest() {
+        // TODO: test integer
+    }
+
+    /**
+     * Test the property 'int32'
+     */
+    @Test
+    void int32Test() {
+        // TODO: test int32
+    }
+
+    /**
+     * Test the property 'int64'
+     */
+    @Test
+    void int64Test() {
+        // TODO: test int64
+    }
+
+    /**
+     * Test the property 'number'
+     */
+    @Test
+    void numberTest() {
+        // TODO: test number
+    }
+
+    /**
+     * Test the property '_float'
+     */
+    @Test
+    void _floatTest() {
+        // TODO: test _float
+    }
+
+    /**
+     * Test the property '_double'
+     */
+    @Test
+    void _doubleTest() {
+        // TODO: test _double
+    }
+
+    /**
+     * Test the property 'decimal'
+     */
+    @Test
+    void decimalTest() {
+        // TODO: test decimal
+    }
+
+    /**
+     * Test the property 'string'
+     */
+    @Test
+    void stringTest() {
+        // TODO: test string
+    }
+
+    /**
+     * Test the property '_byte'
+     */
+    @Test
+    void _byteTest() {
+        // TODO: test _byte
+    }
+
+    /**
+     * Test the property 'binary'
+     */
+    @Test
+    void binaryTest() {
+        // TODO: test binary
+    }
+
+    /**
+     * Test the property 'date'
+     */
+    @Test
+    void dateTest() {
+        // TODO: test date
+    }
+
+    /**
+     * Test the property 'dateTime'
+     */
+    @Test
+    void dateTimeTest() {
+        // TODO: test dateTime
+    }
+
+    /**
+     * Test the property 'uuid'
+     */
+    @Test
+    void uuidTest() {
+        // TODO: test uuid
+    }
+
+    /**
+     * Test the property 'password'
+     */
+    @Test
+    void passwordTest() {
+        // TODO: test password
+    }
+
+    /**
+     * Test the property 'patternWithDigits'
+     */
+    @Test
+    void patternWithDigitsTest() {
+        // TODO: test patternWithDigits
+    }
+
+    /**
+     * Test the property 'patternWithDigitsAndDelimiter'
+     */
+    @Test
+    void patternWithDigitsAndDelimiterTest() {
+        // TODO: test patternWithDigitsAndDelimiter
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/HasOnlyReadOnlyTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/HasOnlyReadOnlyTest.java
new file mode 100644
index 00000000000..c1ebcae72e1
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/HasOnlyReadOnlyTest.java
@@ -0,0 +1,55 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for HasOnlyReadOnly
+ */
+class HasOnlyReadOnlyTest {
+    private final HasOnlyReadOnly model = new HasOnlyReadOnly();
+
+    /**
+     * Model tests for HasOnlyReadOnly
+     */
+    @Test
+    void testHasOnlyReadOnly() {
+        // TODO: test HasOnlyReadOnly
+    }
+
+    /**
+     * Test the property 'bar'
+     */
+    @Test
+    void barTest() {
+        // TODO: test bar
+    }
+
+    /**
+     * Test the property 'foo'
+     */
+    @Test
+    void fooTest() {
+        // TODO: test foo
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/HealthCheckResultTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/HealthCheckResultTest.java
new file mode 100644
index 00000000000..a84fa9c59c0
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/HealthCheckResultTest.java
@@ -0,0 +1,47 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for HealthCheckResult
+ */
+class HealthCheckResultTest {
+    private final HealthCheckResult model = new HealthCheckResult();
+
+    /**
+     * Model tests for HealthCheckResult
+     */
+    @Test
+    void testHealthCheckResult() {
+        // TODO: test HealthCheckResult
+    }
+
+    /**
+     * Test the property 'nullableMessage'
+     */
+    @Test
+    void nullableMessageTest() {
+        // TODO: test nullableMessage
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/MapTestTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/MapTestTest.java
new file mode 100644
index 00000000000..0d967ad6327
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/MapTestTest.java
@@ -0,0 +1,73 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.util.HashMap;
+import java.util.Map;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for MapTest
+ */
+class MapTestTest {
+    private final MapTest model = new MapTest();
+
+    /**
+     * Model tests for MapTest
+     */
+    @Test
+    void testMapTest() {
+        // TODO: test MapTest
+    }
+
+    /**
+     * Test the property 'mapMapOfString'
+     */
+    @Test
+    void mapMapOfStringTest() {
+        // TODO: test mapMapOfString
+    }
+
+    /**
+     * Test the property 'mapOfEnumString'
+     */
+    @Test
+    void mapOfEnumStringTest() {
+        // TODO: test mapOfEnumString
+    }
+
+    /**
+     * Test the property 'directMap'
+     */
+    @Test
+    void directMapTest() {
+        // TODO: test directMap
+    }
+
+    /**
+     * Test the property 'indirectMap'
+     */
+    @Test
+    void indirectMapTest() {
+        // TODO: test indirectMap
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClassTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClassTest.java
new file mode 100644
index 00000000000..e099ec50862
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClassTest.java
@@ -0,0 +1,68 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.UUID;
+import org.openapitools.client.model.Animal;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for MixedPropertiesAndAdditionalPropertiesClass
+ */
+class MixedPropertiesAndAdditionalPropertiesClassTest {
+    private final MixedPropertiesAndAdditionalPropertiesClass model = new MixedPropertiesAndAdditionalPropertiesClass();
+
+    /**
+     * Model tests for MixedPropertiesAndAdditionalPropertiesClass
+     */
+    @Test
+    void testMixedPropertiesAndAdditionalPropertiesClass() {
+        // TODO: test MixedPropertiesAndAdditionalPropertiesClass
+    }
+
+    /**
+     * Test the property 'uuid'
+     */
+    @Test
+    void uuidTest() {
+        // TODO: test uuid
+    }
+
+    /**
+     * Test the property 'dateTime'
+     */
+    @Test
+    void dateTimeTest() {
+        // TODO: test dateTime
+    }
+
+    /**
+     * Test the property 'map'
+     */
+    @Test
+    void mapTest() {
+        // TODO: test map
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/Model200ResponseTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/Model200ResponseTest.java
new file mode 100644
index 00000000000..f77de62fb1e
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/Model200ResponseTest.java
@@ -0,0 +1,55 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for Model200Response
+ */
+class Model200ResponseTest {
+    private final Model200Response model = new Model200Response();
+
+    /**
+     * Model tests for Model200Response
+     */
+    @Test
+    void testModel200Response() {
+        // TODO: test Model200Response
+    }
+
+    /**
+     * Test the property 'name'
+     */
+    @Test
+    void nameTest() {
+        // TODO: test name
+    }
+
+    /**
+     * Test the property 'propertyClass'
+     */
+    @Test
+    void propertyClassTest() {
+        // TODO: test propertyClass
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ModelApiResponseTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ModelApiResponseTest.java
index ca84c5ea519..b602e056991 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ModelApiResponseTest.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ModelApiResponseTest.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ModelFileTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ModelFileTest.java
new file mode 100644
index 00000000000..58c6c354681
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ModelFileTest.java
@@ -0,0 +1,47 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ModelFile
+ */
+class ModelFileTest {
+    private final ModelFile model = new ModelFile();
+
+    /**
+     * Model tests for ModelFile
+     */
+    @Test
+    void testModelFile() {
+        // TODO: test ModelFile
+    }
+
+    /**
+     * Test the property 'sourceURI'
+     */
+    @Test
+    void sourceURITest() {
+        // TODO: test sourceURI
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ModelListTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ModelListTest.java
new file mode 100644
index 00000000000..87cb23417f9
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ModelListTest.java
@@ -0,0 +1,47 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ModelList
+ */
+class ModelListTest {
+    private final ModelList model = new ModelList();
+
+    /**
+     * Model tests for ModelList
+     */
+    @Test
+    void testModelList() {
+        // TODO: test ModelList
+    }
+
+    /**
+     * Test the property '_123list'
+     */
+    @Test
+    void _123listTest() {
+        // TODO: test _123list
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ModelReturnTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ModelReturnTest.java
new file mode 100644
index 00000000000..e9db6db670e
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ModelReturnTest.java
@@ -0,0 +1,47 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ModelReturn
+ */
+class ModelReturnTest {
+    private final ModelReturn model = new ModelReturn();
+
+    /**
+     * Model tests for ModelReturn
+     */
+    @Test
+    void testModelReturn() {
+        // TODO: test ModelReturn
+    }
+
+    /**
+     * Test the property '_return'
+     */
+    @Test
+    void _returnTest() {
+        // TODO: test _return
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/NameTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/NameTest.java
new file mode 100644
index 00000000000..385da9b52c9
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/NameTest.java
@@ -0,0 +1,71 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for Name
+ */
+class NameTest {
+    private final Name model = new Name();
+
+    /**
+     * Model tests for Name
+     */
+    @Test
+    void testName() {
+        // TODO: test Name
+    }
+
+    /**
+     * Test the property 'name'
+     */
+    @Test
+    void nameTest() {
+        // TODO: test name
+    }
+
+    /**
+     * Test the property 'snakeCase'
+     */
+    @Test
+    void snakeCaseTest() {
+        // TODO: test snakeCase
+    }
+
+    /**
+     * Test the property 'property'
+     */
+    @Test
+    void propertyTest() {
+        // TODO: test property
+    }
+
+    /**
+     * Test the property '_123number'
+     */
+    @Test
+    void _123numberTest() {
+        // TODO: test _123number
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/NullableClassTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/NullableClassTest.java
new file mode 100644
index 00000000000..4a0abb629e5
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/NullableClassTest.java
@@ -0,0 +1,142 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for NullableClass
+ */
+class NullableClassTest {
+    private final NullableClass model = new NullableClass();
+
+    /**
+     * Model tests for NullableClass
+     */
+    @Test
+    void testNullableClass() {
+        // TODO: test NullableClass
+    }
+
+    /**
+     * Test the property 'integerProp'
+     */
+    @Test
+    void integerPropTest() {
+        // TODO: test integerProp
+    }
+
+    /**
+     * Test the property 'numberProp'
+     */
+    @Test
+    void numberPropTest() {
+        // TODO: test numberProp
+    }
+
+    /**
+     * Test the property 'booleanProp'
+     */
+    @Test
+    void booleanPropTest() {
+        // TODO: test booleanProp
+    }
+
+    /**
+     * Test the property 'stringProp'
+     */
+    @Test
+    void stringPropTest() {
+        // TODO: test stringProp
+    }
+
+    /**
+     * Test the property 'dateProp'
+     */
+    @Test
+    void datePropTest() {
+        // TODO: test dateProp
+    }
+
+    /**
+     * Test the property 'datetimeProp'
+     */
+    @Test
+    void datetimePropTest() {
+        // TODO: test datetimeProp
+    }
+
+    /**
+     * Test the property 'arrayNullableProp'
+     */
+    @Test
+    void arrayNullablePropTest() {
+        // TODO: test arrayNullableProp
+    }
+
+    /**
+     * Test the property 'arrayAndItemsNullableProp'
+     */
+    @Test
+    void arrayAndItemsNullablePropTest() {
+        // TODO: test arrayAndItemsNullableProp
+    }
+
+    /**
+     * Test the property 'arrayItemsNullable'
+     */
+    @Test
+    void arrayItemsNullableTest() {
+        // TODO: test arrayItemsNullable
+    }
+
+    /**
+     * Test the property 'objectNullableProp'
+     */
+    @Test
+    void objectNullablePropTest() {
+        // TODO: test objectNullableProp
+    }
+
+    /**
+     * Test the property 'objectAndItemsNullableProp'
+     */
+    @Test
+    void objectAndItemsNullablePropTest() {
+        // TODO: test objectAndItemsNullableProp
+    }
+
+    /**
+     * Test the property 'objectItemsNullable'
+     */
+    @Test
+    void objectItemsNullableTest() {
+        // TODO: test objectItemsNullable
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/NumberOnlyTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/NumberOnlyTest.java
new file mode 100644
index 00000000000..cf9812f24f9
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/NumberOnlyTest.java
@@ -0,0 +1,48 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.math.BigDecimal;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for NumberOnly
+ */
+class NumberOnlyTest {
+    private final NumberOnly model = new NumberOnly();
+
+    /**
+     * Model tests for NumberOnly
+     */
+    @Test
+    void testNumberOnly() {
+        // TODO: test NumberOnly
+    }
+
+    /**
+     * Test the property 'justNumber'
+     */
+    @Test
+    void justNumberTest() {
+        // TODO: test justNumber
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ObjectWithDeprecatedFieldsTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ObjectWithDeprecatedFieldsTest.java
new file mode 100644
index 00000000000..a813f7fefab
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ObjectWithDeprecatedFieldsTest.java
@@ -0,0 +1,76 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.openapitools.client.model.DeprecatedObject;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ObjectWithDeprecatedFields
+ */
+class ObjectWithDeprecatedFieldsTest {
+    private final ObjectWithDeprecatedFields model = new ObjectWithDeprecatedFields();
+
+    /**
+     * Model tests for ObjectWithDeprecatedFields
+     */
+    @Test
+    void testObjectWithDeprecatedFields() {
+        // TODO: test ObjectWithDeprecatedFields
+    }
+
+    /**
+     * Test the property 'uuid'
+     */
+    @Test
+    void uuidTest() {
+        // TODO: test uuid
+    }
+
+    /**
+     * Test the property 'id'
+     */
+    @Test
+    void idTest() {
+        // TODO: test id
+    }
+
+    /**
+     * Test the property 'deprecatedRef'
+     */
+    @Test
+    void deprecatedRefTest() {
+        // TODO: test deprecatedRef
+    }
+
+    /**
+     * Test the property 'bars'
+     */
+    @Test
+    void barsTest() {
+        // TODO: test bars
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/OrderTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/OrderTest.java
index d76f9c3e543..d679c05ec06 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/OrderTest.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/OrderTest.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/OuterCompositeTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/OuterCompositeTest.java
new file mode 100644
index 00000000000..2b94247bb6d
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/OuterCompositeTest.java
@@ -0,0 +1,64 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.math.BigDecimal;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for OuterComposite
+ */
+class OuterCompositeTest {
+    private final OuterComposite model = new OuterComposite();
+
+    /**
+     * Model tests for OuterComposite
+     */
+    @Test
+    void testOuterComposite() {
+        // TODO: test OuterComposite
+    }
+
+    /**
+     * Test the property 'myNumber'
+     */
+    @Test
+    void myNumberTest() {
+        // TODO: test myNumber
+    }
+
+    /**
+     * Test the property 'myString'
+     */
+    @Test
+    void myStringTest() {
+        // TODO: test myString
+    }
+
+    /**
+     * Test the property 'myBoolean'
+     */
+    @Test
+    void myBooleanTest() {
+        // TODO: test myBoolean
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/OuterEnumDefaultValueTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/OuterEnumDefaultValueTest.java
new file mode 100644
index 00000000000..e492f3e0ff6
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/OuterEnumDefaultValueTest.java
@@ -0,0 +1,32 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for OuterEnumDefaultValue
+ */
+class OuterEnumDefaultValueTest {
+    /**
+     * Model tests for OuterEnumDefaultValue
+     */
+    @Test
+    void testOuterEnumDefaultValue() {
+        // TODO: test OuterEnumDefaultValue
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/OuterEnumIntegerDefaultValueTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/OuterEnumIntegerDefaultValueTest.java
new file mode 100644
index 00000000000..d72626405cc
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/OuterEnumIntegerDefaultValueTest.java
@@ -0,0 +1,32 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for OuterEnumIntegerDefaultValue
+ */
+class OuterEnumIntegerDefaultValueTest {
+    /**
+     * Model tests for OuterEnumIntegerDefaultValue
+     */
+    @Test
+    void testOuterEnumIntegerDefaultValue() {
+        // TODO: test OuterEnumIntegerDefaultValue
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/OuterEnumIntegerTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/OuterEnumIntegerTest.java
new file mode 100644
index 00000000000..b7dd55cda62
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/OuterEnumIntegerTest.java
@@ -0,0 +1,32 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for OuterEnumInteger
+ */
+class OuterEnumIntegerTest {
+    /**
+     * Model tests for OuterEnumInteger
+     */
+    @Test
+    void testOuterEnumInteger() {
+        // TODO: test OuterEnumInteger
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/OuterEnumTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/OuterEnumTest.java
new file mode 100644
index 00000000000..1116901010b
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/OuterEnumTest.java
@@ -0,0 +1,32 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for OuterEnum
+ */
+class OuterEnumTest {
+    /**
+     * Model tests for OuterEnum
+     */
+    @Test
+    void testOuterEnum() {
+        // TODO: test OuterEnum
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/OuterObjectWithEnumPropertyTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/OuterObjectWithEnumPropertyTest.java
new file mode 100644
index 00000000000..0693c009d46
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/OuterObjectWithEnumPropertyTest.java
@@ -0,0 +1,48 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.openapitools.client.model.OuterEnumInteger;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for OuterObjectWithEnumProperty
+ */
+class OuterObjectWithEnumPropertyTest {
+    private final OuterObjectWithEnumProperty model = new OuterObjectWithEnumProperty();
+
+    /**
+     * Model tests for OuterObjectWithEnumProperty
+     */
+    @Test
+    void testOuterObjectWithEnumProperty() {
+        // TODO: test OuterObjectWithEnumProperty
+    }
+
+    /**
+     * Test the property 'value'
+     */
+    @Test
+    void valueTest() {
+        // TODO: test value
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ParentWithNullableTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ParentWithNullableTest.java
new file mode 100644
index 00000000000..40da11eea19
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ParentWithNullableTest.java
@@ -0,0 +1,58 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonSubTypes;
+import com.fasterxml.jackson.annotation.JsonTypeInfo;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ParentWithNullable
+ */
+class ParentWithNullableTest {
+    private final ParentWithNullable model = new ParentWithNullable();
+
+    /**
+     * Model tests for ParentWithNullable
+     */
+    @Test
+    void testParentWithNullable() {
+        // TODO: test ParentWithNullable
+    }
+
+    /**
+     * Test the property 'type'
+     */
+    @Test
+    void typeTest() {
+        // TODO: test type
+    }
+
+    /**
+     * Test the property 'nullableProperty'
+     */
+    @Test
+    void nullablePropertyTest() {
+        // TODO: test nullableProperty
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/PetTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/PetTest.java
index 1398113cd87..ef6ed17143c 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/PetTest.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/PetTest.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -18,9 +18,12 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonTypeName;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.LinkedHashSet;
 import java.util.List;
+import java.util.Set;
 import org.openapitools.client.model.Category;
 import org.openapitools.client.model.Tag;
 import org.junit.jupiter.api.Assertions;
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ReadOnlyFirstTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ReadOnlyFirstTest.java
new file mode 100644
index 00000000000..9c72a616851
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/ReadOnlyFirstTest.java
@@ -0,0 +1,55 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ReadOnlyFirst
+ */
+class ReadOnlyFirstTest {
+    private final ReadOnlyFirst model = new ReadOnlyFirst();
+
+    /**
+     * Model tests for ReadOnlyFirst
+     */
+    @Test
+    void testReadOnlyFirst() {
+        // TODO: test ReadOnlyFirst
+    }
+
+    /**
+     * Test the property 'bar'
+     */
+    @Test
+    void barTest() {
+        // TODO: test bar
+    }
+
+    /**
+     * Test the property 'baz'
+     */
+    @Test
+    void bazTest() {
+        // TODO: test baz
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/SingleRefTypeTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/SingleRefTypeTest.java
new file mode 100644
index 00000000000..210c2a45037
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/SingleRefTypeTest.java
@@ -0,0 +1,32 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for SingleRefType
+ */
+class SingleRefTypeTest {
+    /**
+     * Model tests for SingleRefType
+     */
+    @Test
+    void testSingleRefType() {
+        // TODO: test SingleRefType
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/SpecialModelNameTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/SpecialModelNameTest.java
new file mode 100644
index 00000000000..99c6982835d
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/SpecialModelNameTest.java
@@ -0,0 +1,47 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for SpecialModelName
+ */
+class SpecialModelNameTest {
+    private final SpecialModelName model = new SpecialModelName();
+
+    /**
+     * Model tests for SpecialModelName
+     */
+    @Test
+    void testSpecialModelName() {
+        // TODO: test SpecialModelName
+    }
+
+    /**
+     * Test the property '$specialPropertyName'
+     */
+    @Test
+    void $specialPropertyNameTest() {
+        // TODO: test $specialPropertyName
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/TagTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/TagTest.java
index 2573ba6494f..8e5aba19989 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/TagTest.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/TagTest.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/TestInlineFreeformAdditionalPropertiesRequestTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/TestInlineFreeformAdditionalPropertiesRequestTest.java
new file mode 100644
index 00000000000..dd03556a5b2
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/TestInlineFreeformAdditionalPropertiesRequestTest.java
@@ -0,0 +1,49 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.util.HashMap;
+import java.util.Map;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for TestInlineFreeformAdditionalPropertiesRequest
+ */
+class TestInlineFreeformAdditionalPropertiesRequestTest {
+    private final TestInlineFreeformAdditionalPropertiesRequest model = new TestInlineFreeformAdditionalPropertiesRequest();
+
+    /**
+     * Model tests for TestInlineFreeformAdditionalPropertiesRequest
+     */
+    @Test
+    void testTestInlineFreeformAdditionalPropertiesRequest() {
+        // TODO: test TestInlineFreeformAdditionalPropertiesRequest
+    }
+
+    /**
+     * Test the property 'someProperty'
+     */
+    @Test
+    void somePropertyTest() {
+        // TODO: test someProperty
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/UserTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/UserTest.java
index 3cbc09cd779..b93729249f2 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/UserTest.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-jackson/src/test/java/org/openapitools/client/model/UserTest.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-mutiny/pom.xml b/samples/client/petstore/java/microprofile-rest-client-3.0-mutiny/pom.xml
index 5dfda58407b..5804a8d6e32 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-mutiny/pom.xml
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-mutiny/pom.xml
@@ -165,7 +165,7 @@
     <jackson.jaxrs.version>2.17.1</jackson.jaxrs.version>
     <jakarta.activation.version>2.1.0</jakarta.activation.version>
     <jakarta.annotation.version>2.0.0</jakarta.annotation.version>
-    <jakarta.json.bind.version>2.0.0</jakarta.json.bind.version>
+    <jakarta.json.bind.version>3.0.0</jakarta.json.bind.version>
     <jakarta.json.version>2.0.1</jakarta.json.version>
     <jakarta.ws.rs.version>3.0.0</jakarta.ws.rs.version>
     <jakarta.xml.bind.version>3.0.1</jakarta.xml.bind.version>
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-mutiny/src/main/java/org/openapitools/client/model/Category.java b/samples/client/petstore/java/microprofile-rest-client-3.0-mutiny/src/main/java/org/openapitools/client/model/Category.java
index d7d5dca2bc6..6effb8514c2 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-mutiny/src/main/java/org/openapitools/client/model/Category.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-mutiny/src/main/java/org/openapitools/client/model/Category.java
@@ -24,6 +24,10 @@ import jakarta.json.bind.serializer.SerializationContext;
 import jakarta.json.stream.JsonGenerator;
 import jakarta.json.stream.JsonParser;
 import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
 
 /**
   * A category for a pet
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-mutiny/src/main/java/org/openapitools/client/model/ModelApiResponse.java b/samples/client/petstore/java/microprofile-rest-client-3.0-mutiny/src/main/java/org/openapitools/client/model/ModelApiResponse.java
index 2791024ba29..fc140069625 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-mutiny/src/main/java/org/openapitools/client/model/ModelApiResponse.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-mutiny/src/main/java/org/openapitools/client/model/ModelApiResponse.java
@@ -24,6 +24,10 @@ import jakarta.json.bind.serializer.SerializationContext;
 import jakarta.json.stream.JsonGenerator;
 import jakarta.json.stream.JsonParser;
 import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
 
 /**
   * Describes the result of uploading an image resource
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-mutiny/src/main/java/org/openapitools/client/model/Order.java b/samples/client/petstore/java/microprofile-rest-client-3.0-mutiny/src/main/java/org/openapitools/client/model/Order.java
index d7e654ce3a9..06c78288e18 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-mutiny/src/main/java/org/openapitools/client/model/Order.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-mutiny/src/main/java/org/openapitools/client/model/Order.java
@@ -25,6 +25,10 @@ import jakarta.json.bind.serializer.SerializationContext;
 import jakarta.json.stream.JsonGenerator;
 import jakarta.json.stream.JsonParser;
 import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
 
 /**
   * An order for a pets from the pet store
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-mutiny/src/main/java/org/openapitools/client/model/Pet.java b/samples/client/petstore/java/microprofile-rest-client-3.0-mutiny/src/main/java/org/openapitools/client/model/Pet.java
index d2b51d9db1c..28dd90e2ebd 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-mutiny/src/main/java/org/openapitools/client/model/Pet.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-mutiny/src/main/java/org/openapitools/client/model/Pet.java
@@ -29,6 +29,10 @@ import jakarta.json.bind.serializer.SerializationContext;
 import jakarta.json.stream.JsonGenerator;
 import jakarta.json.stream.JsonParser;
 import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
 
 /**
   * A pet for sale in the pet store
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-mutiny/src/main/java/org/openapitools/client/model/Tag.java b/samples/client/petstore/java/microprofile-rest-client-3.0-mutiny/src/main/java/org/openapitools/client/model/Tag.java
index 1317a25b177..a12166bacce 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-mutiny/src/main/java/org/openapitools/client/model/Tag.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-mutiny/src/main/java/org/openapitools/client/model/Tag.java
@@ -24,6 +24,10 @@ import jakarta.json.bind.serializer.SerializationContext;
 import jakarta.json.stream.JsonGenerator;
 import jakarta.json.stream.JsonParser;
 import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
 
 /**
   * A tag for a pet
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0-mutiny/src/main/java/org/openapitools/client/model/User.java b/samples/client/petstore/java/microprofile-rest-client-3.0-mutiny/src/main/java/org/openapitools/client/model/User.java
index d717a4bd321..f6676366006 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0-mutiny/src/main/java/org/openapitools/client/model/User.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0-mutiny/src/main/java/org/openapitools/client/model/User.java
@@ -24,6 +24,10 @@ import jakarta.json.bind.serializer.SerializationContext;
 import jakarta.json.stream.JsonGenerator;
 import jakarta.json.stream.JsonParser;
 import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
 
 /**
   * A User who is purchasing from the pet store
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/.openapi-generator/FILES b/samples/client/petstore/java/microprofile-rest-client-3.0/.openapi-generator/FILES
index ae145903e52..c2568cfe301 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/.openapi-generator/FILES
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/.openapi-generator/FILES
@@ -1,22 +1,118 @@
 README.md
+docs/AdditionalPropertiesClass.md
+docs/AllOfWithSingleRef.md
+docs/Animal.md
+docs/AnotherFakeApi.md
+docs/ArrayOfArrayOfNumberOnly.md
+docs/ArrayOfNumberOnly.md
+docs/ArrayTest.md
+docs/Capitalization.md
+docs/Cat.md
 docs/Category.md
+docs/ChildWithNullable.md
+docs/ClassModel.md
+docs/Client.md
+docs/DefaultApi.md
+docs/DeprecatedObject.md
+docs/Dog.md
+docs/EnumArrays.md
+docs/EnumClass.md
+docs/EnumTest.md
+docs/FakeApi.md
+docs/FakeBigDecimalMap200Response.md
+docs/FakeClassnameTags123Api.md
+docs/FileSchemaTestClass.md
+docs/Foo.md
+docs/FooGetDefaultResponse.md
+docs/FormatTest.md
+docs/HasOnlyReadOnly.md
+docs/HealthCheckResult.md
+docs/MapTest.md
+docs/MixedPropertiesAndAdditionalPropertiesClass.md
+docs/Model200Response.md
 docs/ModelApiResponse.md
+docs/ModelFile.md
+docs/ModelList.md
+docs/ModelReturn.md
+docs/Name.md
+docs/NullableClass.md
+docs/NumberOnly.md
+docs/ObjectWithDeprecatedFields.md
 docs/Order.md
+docs/OuterComposite.md
+docs/OuterEnum.md
+docs/OuterEnumDefaultValue.md
+docs/OuterEnumInteger.md
+docs/OuterEnumIntegerDefaultValue.md
+docs/OuterObjectWithEnumProperty.md
+docs/ParentWithNullable.md
 docs/Pet.md
 docs/PetApi.md
+docs/ReadOnlyFirst.md
+docs/SingleRefType.md
+docs/SpecialModelName.md
 docs/StoreApi.md
 docs/Tag.md
+docs/TestInlineFreeformAdditionalPropertiesRequest.md
 docs/User.md
 docs/UserApi.md
 pom.xml
+src/main/java/org/openapitools/client/api/AnotherFakeApi.java
 src/main/java/org/openapitools/client/api/ApiException.java
 src/main/java/org/openapitools/client/api/ApiExceptionMapper.java
+src/main/java/org/openapitools/client/api/DefaultApi.java
+src/main/java/org/openapitools/client/api/FakeApi.java
+src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
 src/main/java/org/openapitools/client/api/PetApi.java
 src/main/java/org/openapitools/client/api/StoreApi.java
 src/main/java/org/openapitools/client/api/UserApi.java
+src/main/java/org/openapitools/client/model/AdditionalPropertiesClass.java
+src/main/java/org/openapitools/client/model/AllOfWithSingleRef.java
+src/main/java/org/openapitools/client/model/Animal.java
+src/main/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnly.java
+src/main/java/org/openapitools/client/model/ArrayOfNumberOnly.java
+src/main/java/org/openapitools/client/model/ArrayTest.java
+src/main/java/org/openapitools/client/model/Capitalization.java
+src/main/java/org/openapitools/client/model/Cat.java
 src/main/java/org/openapitools/client/model/Category.java
+src/main/java/org/openapitools/client/model/ChildWithNullable.java
+src/main/java/org/openapitools/client/model/ClassModel.java
+src/main/java/org/openapitools/client/model/Client.java
+src/main/java/org/openapitools/client/model/DeprecatedObject.java
+src/main/java/org/openapitools/client/model/Dog.java
+src/main/java/org/openapitools/client/model/EnumArrays.java
+src/main/java/org/openapitools/client/model/EnumClass.java
+src/main/java/org/openapitools/client/model/EnumTest.java
+src/main/java/org/openapitools/client/model/FakeBigDecimalMap200Response.java
+src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
+src/main/java/org/openapitools/client/model/Foo.java
+src/main/java/org/openapitools/client/model/FooGetDefaultResponse.java
+src/main/java/org/openapitools/client/model/FormatTest.java
+src/main/java/org/openapitools/client/model/HasOnlyReadOnly.java
+src/main/java/org/openapitools/client/model/HealthCheckResult.java
+src/main/java/org/openapitools/client/model/MapTest.java
+src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
+src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelFile.java
+src/main/java/org/openapitools/client/model/ModelList.java
+src/main/java/org/openapitools/client/model/ModelReturn.java
+src/main/java/org/openapitools/client/model/Name.java
+src/main/java/org/openapitools/client/model/NullableClass.java
+src/main/java/org/openapitools/client/model/NumberOnly.java
+src/main/java/org/openapitools/client/model/ObjectWithDeprecatedFields.java
 src/main/java/org/openapitools/client/model/Order.java
+src/main/java/org/openapitools/client/model/OuterComposite.java
+src/main/java/org/openapitools/client/model/OuterEnum.java
+src/main/java/org/openapitools/client/model/OuterEnumDefaultValue.java
+src/main/java/org/openapitools/client/model/OuterEnumInteger.java
+src/main/java/org/openapitools/client/model/OuterEnumIntegerDefaultValue.java
+src/main/java/org/openapitools/client/model/OuterObjectWithEnumProperty.java
+src/main/java/org/openapitools/client/model/ParentWithNullable.java
 src/main/java/org/openapitools/client/model/Pet.java
+src/main/java/org/openapitools/client/model/ReadOnlyFirst.java
+src/main/java/org/openapitools/client/model/SingleRefType.java
+src/main/java/org/openapitools/client/model/SpecialModelName.java
 src/main/java/org/openapitools/client/model/Tag.java
+src/main/java/org/openapitools/client/model/TestInlineFreeformAdditionalPropertiesRequest.java
 src/main/java/org/openapitools/client/model/User.java
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/README.md b/samples/client/petstore/java/microprofile-rest-client-3.0/README.md
index 4c3e40a34b5..1cb83709623 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/README.md
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/README.md
@@ -1,6 +1,6 @@
 # OpenAPI Petstore - MicroProfile Rest Client & MicroProfile Server
 
-This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
 
 ## Overview
 This API client was generated by the [OpenAPI Generator](https://openapi-generator.tech) project.
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/AdditionalPropertiesClass.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/AdditionalPropertiesClass.md
new file mode 100644
index 00000000000..fe69a56eebf
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/AdditionalPropertiesClass.md
@@ -0,0 +1,14 @@
+
+
+# AdditionalPropertiesClass
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**mapProperty** | **Map&lt;String, String&gt;** |  |  [optional] |
+|**mapOfMapProperty** | **Map&lt;String, Map&lt;String, String&gt;&gt;** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/AllOfWithSingleRef.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/AllOfWithSingleRef.md
new file mode 100644
index 00000000000..4146d56a372
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/AllOfWithSingleRef.md
@@ -0,0 +1,14 @@
+
+
+# AllOfWithSingleRef
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**username** | **String** |  |  [optional] |
+|**singleRefType** | **SingleRefType** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Animal.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Animal.md
new file mode 100644
index 00000000000..d9b32f14c88
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Animal.md
@@ -0,0 +1,14 @@
+
+
+# Animal
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**className** | **String** |  |  |
+|**color** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/AnotherFakeApi.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/AnotherFakeApi.md
new file mode 100644
index 00000000000..73c966d2d54
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/AnotherFakeApi.md
@@ -0,0 +1,75 @@
+# AnotherFakeApi
+
+All URIs are relative to *http://petstore.swagger.io:80/v2*
+
+| Method | HTTP request | Description |
+|------------- | ------------- | -------------|
+| [**call123testSpecialTags**](AnotherFakeApi.md#call123testSpecialTags) | **PATCH** /another-fake/dummy | To test special tags |
+
+
+
+## call123testSpecialTags
+
+> Client call123testSpecialTags(client)
+
+To test special tags
+
+To test special tags and operation ID starting with number
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.AnotherFakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        AnotherFakeApi apiInstance = new AnotherFakeApi(defaultClient);
+        Client client = new Client(); // Client | client model
+        try {
+            Client result = apiInstance.call123testSpecialTags(client);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling AnotherFakeApi#call123testSpecialTags");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **client** | [**Client**](Client.md)| client model | |
+
+### Return type
+
+[**Client**](Client.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: application/json
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ArrayOfArrayOfNumberOnly.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ArrayOfArrayOfNumberOnly.md
new file mode 100644
index 00000000000..0188db3eb13
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ArrayOfArrayOfNumberOnly.md
@@ -0,0 +1,13 @@
+
+
+# ArrayOfArrayOfNumberOnly
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**arrayArrayNumber** | **List&lt;List&lt;BigDecimal&gt;&gt;** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ArrayOfNumberOnly.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ArrayOfNumberOnly.md
new file mode 100644
index 00000000000..a5753530aad
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ArrayOfNumberOnly.md
@@ -0,0 +1,13 @@
+
+
+# ArrayOfNumberOnly
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**arrayNumber** | **List&lt;BigDecimal&gt;** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ArrayTest.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ArrayTest.md
new file mode 100644
index 00000000000..36077c9df30
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ArrayTest.md
@@ -0,0 +1,15 @@
+
+
+# ArrayTest
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**arrayOfString** | **List&lt;String&gt;** |  |  [optional] |
+|**arrayArrayOfInteger** | **List&lt;List&lt;Long&gt;&gt;** |  |  [optional] |
+|**arrayArrayOfModel** | **List&lt;List&lt;ReadOnlyFirst&gt;&gt;** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Capitalization.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Capitalization.md
new file mode 100644
index 00000000000..82a812711de
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Capitalization.md
@@ -0,0 +1,18 @@
+
+
+# Capitalization
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**smallCamel** | **String** |  |  [optional] |
+|**capitalCamel** | **String** |  |  [optional] |
+|**smallSnake** | **String** |  |  [optional] |
+|**capitalSnake** | **String** |  |  [optional] |
+|**scAETHFlowPoints** | **String** |  |  [optional] |
+|**ATT_NAME** | **String** | Name of the pet  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Cat.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Cat.md
new file mode 100644
index 00000000000..390dd519c8c
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Cat.md
@@ -0,0 +1,13 @@
+
+
+# Cat
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**declawed** | **Boolean** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Category.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Category.md
index a7fc939d252..ab6d1ec334d 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Category.md
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Category.md
@@ -2,14 +2,13 @@
 
 # Category
 
-A category for a pet
 
 ## Properties
 
 | Name | Type | Description | Notes |
 |------------ | ------------- | ------------- | -------------|
 |**id** | **Long** |  |  [optional] |
-|**name** | **String** |  |  [optional] |
+|**name** | **String** |  |  |
 
 
 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ChildWithNullable.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ChildWithNullable.md
new file mode 100644
index 00000000000..73c0dd6d473
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ChildWithNullable.md
@@ -0,0 +1,13 @@
+
+
+# ChildWithNullable
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**otherProperty** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ClassModel.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ClassModel.md
new file mode 100644
index 00000000000..af46dea1f6c
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ClassModel.md
@@ -0,0 +1,14 @@
+
+
+# ClassModel
+
+Model for testing model with \"_class\" property
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**propertyClass** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Client.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Client.md
new file mode 100644
index 00000000000..ef07b4ab8b9
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Client.md
@@ -0,0 +1,13 @@
+
+
+# Client
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**client** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/DefaultApi.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/DefaultApi.md
new file mode 100644
index 00000000000..3b2c1dbda17
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/DefaultApi.md
@@ -0,0 +1,69 @@
+# DefaultApi
+
+All URIs are relative to *http://petstore.swagger.io:80/v2*
+
+| Method | HTTP request | Description |
+|------------- | ------------- | -------------|
+| [**fooGet**](DefaultApi.md#fooGet) | **GET** /foo |  |
+
+
+
+## fooGet
+
+> FooGetDefaultResponse fooGet()
+
+
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.DefaultApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        DefaultApi apiInstance = new DefaultApi(defaultClient);
+        try {
+            FooGetDefaultResponse result = apiInstance.fooGet();
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling DefaultApi#fooGet");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+This endpoint does not need any parameter.
+
+### Return type
+
+[**FooGetDefaultResponse**](FooGetDefaultResponse.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: Not defined
+- **Accept**: application/json
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | response |  -  |
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/DeprecatedObject.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/DeprecatedObject.md
new file mode 100644
index 00000000000..48de1d62442
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/DeprecatedObject.md
@@ -0,0 +1,13 @@
+
+
+# DeprecatedObject
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**name** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Dog.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Dog.md
new file mode 100644
index 00000000000..972c981c0d0
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Dog.md
@@ -0,0 +1,13 @@
+
+
+# Dog
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**breed** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/EnumArrays.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/EnumArrays.md
new file mode 100644
index 00000000000..b2222d5beb2
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/EnumArrays.md
@@ -0,0 +1,32 @@
+
+
+# EnumArrays
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**justSymbol** | [**JustSymbolEnum**](#JustSymbolEnum) |  |  [optional] |
+|**arrayEnum** | [**List&lt;ArrayEnumEnum&gt;**](#List&lt;ArrayEnumEnum&gt;) |  |  [optional] |
+
+
+
+## Enum: JustSymbolEnum
+
+| Name | Value |
+|---- | -----|
+| GREATER_THAN_OR_EQUAL_TO | &quot;&gt;&#x3D;&quot; |
+| DOLLAR | &quot;$&quot; |
+
+
+
+## Enum: List&lt;ArrayEnumEnum&gt;
+
+| Name | Value |
+|---- | -----|
+| FISH | &quot;fish&quot; |
+| CRAB | &quot;crab&quot; |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/EnumClass.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/EnumClass.md
new file mode 100644
index 00000000000..b314590a759
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/EnumClass.md
@@ -0,0 +1,15 @@
+
+
+# EnumClass
+
+## Enum
+
+
+* `_ABC` (value: `"_abc"`)
+
+* `_EFG` (value: `"-efg"`)
+
+* `_XYZ_` (value: `"(xyz)"`)
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/EnumTest.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/EnumTest.md
new file mode 100644
index 00000000000..380a2aef0bc
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/EnumTest.md
@@ -0,0 +1,58 @@
+
+
+# EnumTest
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**enumString** | [**EnumStringEnum**](#EnumStringEnum) |  |  [optional] |
+|**enumStringRequired** | [**EnumStringRequiredEnum**](#EnumStringRequiredEnum) |  |  |
+|**enumInteger** | [**EnumIntegerEnum**](#EnumIntegerEnum) |  |  [optional] |
+|**enumNumber** | [**EnumNumberEnum**](#EnumNumberEnum) |  |  [optional] |
+|**outerEnum** | **OuterEnum** |  |  [optional] |
+|**outerEnumInteger** | **OuterEnumInteger** |  |  [optional] |
+|**outerEnumDefaultValue** | **OuterEnumDefaultValue** |  |  [optional] |
+|**outerEnumIntegerDefaultValue** | **OuterEnumIntegerDefaultValue** |  |  [optional] |
+
+
+
+## Enum: EnumStringEnum
+
+| Name | Value |
+|---- | -----|
+| UPPER | &quot;UPPER&quot; |
+| LOWER | &quot;lower&quot; |
+| EMPTY | &quot;&quot; |
+
+
+
+## Enum: EnumStringRequiredEnum
+
+| Name | Value |
+|---- | -----|
+| UPPER | &quot;UPPER&quot; |
+| LOWER | &quot;lower&quot; |
+| EMPTY | &quot;&quot; |
+
+
+
+## Enum: EnumIntegerEnum
+
+| Name | Value |
+|---- | -----|
+| NUMBER_1 | 1 |
+| NUMBER_MINUS_1 | -1 |
+
+
+
+## Enum: EnumNumberEnum
+
+| Name | Value |
+|---- | -----|
+| NUMBER_1_DOT_1 | 1.1 |
+| NUMBER_MINUS_1_DOT_2 | -1.2 |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/FakeApi.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/FakeApi.md
new file mode 100644
index 00000000000..02df4858d16
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/FakeApi.md
@@ -0,0 +1,1555 @@
+# FakeApi
+
+All URIs are relative to *http://petstore.swagger.io:80/v2*
+
+| Method | HTTP request | Description |
+|------------- | ------------- | -------------|
+| [**fakeBigDecimalMap**](FakeApi.md#fakeBigDecimalMap) | **GET** /fake/BigDecimalMap |  |
+| [**fakeHealthGet**](FakeApi.md#fakeHealthGet) | **GET** /fake/health | Health check endpoint |
+| [**fakeHttpSignatureTest**](FakeApi.md#fakeHttpSignatureTest) | **GET** /fake/http-signature-test | test http signature authentication |
+| [**fakeOuterBooleanSerialize**](FakeApi.md#fakeOuterBooleanSerialize) | **POST** /fake/outer/boolean |  |
+| [**fakeOuterCompositeSerialize**](FakeApi.md#fakeOuterCompositeSerialize) | **POST** /fake/outer/composite |  |
+| [**fakeOuterNumberSerialize**](FakeApi.md#fakeOuterNumberSerialize) | **POST** /fake/outer/number |  |
+| [**fakeOuterStringSerialize**](FakeApi.md#fakeOuterStringSerialize) | **POST** /fake/outer/string |  |
+| [**fakePropertyEnumIntegerSerialize**](FakeApi.md#fakePropertyEnumIntegerSerialize) | **POST** /fake/property/enum-int |  |
+| [**testAdditionalPropertiesReference**](FakeApi.md#testAdditionalPropertiesReference) | **POST** /fake/additionalProperties-reference | test referenced additionalProperties |
+| [**testBodyWithBinary**](FakeApi.md#testBodyWithBinary) | **PUT** /fake/body-with-binary |  |
+| [**testBodyWithFileSchema**](FakeApi.md#testBodyWithFileSchema) | **PUT** /fake/body-with-file-schema |  |
+| [**testBodyWithQueryParams**](FakeApi.md#testBodyWithQueryParams) | **PUT** /fake/body-with-query-params |  |
+| [**testClientModel**](FakeApi.md#testClientModel) | **PATCH** /fake | To test \&quot;client\&quot; model |
+| [**testEndpointParameters**](FakeApi.md#testEndpointParameters) | **POST** /fake | Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트  |
+| [**testEnumParameters**](FakeApi.md#testEnumParameters) | **GET** /fake | To test enum parameters |
+| [**testGroupParameters**](FakeApi.md#testGroupParameters) | **DELETE** /fake | Fake endpoint to test group parameters (optional) |
+| [**testInlineAdditionalProperties**](FakeApi.md#testInlineAdditionalProperties) | **POST** /fake/inline-additionalProperties | test inline additionalProperties |
+| [**testInlineFreeformAdditionalProperties**](FakeApi.md#testInlineFreeformAdditionalProperties) | **POST** /fake/inline-freeform-additionalProperties | test inline free-form additionalProperties |
+| [**testJsonFormData**](FakeApi.md#testJsonFormData) | **GET** /fake/jsonFormData | test json serialization of form data |
+| [**testNullable**](FakeApi.md#testNullable) | **POST** /fake/nullable | test nullable parent property |
+| [**testQueryParameterCollectionFormat**](FakeApi.md#testQueryParameterCollectionFormat) | **PUT** /fake/test-query-parameters |  |
+| [**testStringMapReference**](FakeApi.md#testStringMapReference) | **POST** /fake/stringMap-reference | test referenced string map |
+
+
+
+## fakeBigDecimalMap
+
+> FakeBigDecimalMap200Response fakeBigDecimalMap()
+
+
+
+for Java apache and Java native, test toUrlQueryString for maps with BegDecimal keys
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        try {
+            FakeBigDecimalMap200Response result = apiInstance.fakeBigDecimalMap();
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#fakeBigDecimalMap");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+This endpoint does not need any parameter.
+
+### Return type
+
+[**FakeBigDecimalMap200Response**](FakeBigDecimalMap200Response.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: Not defined
+- **Accept**: */*
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
+
+## fakeHealthGet
+
+> HealthCheckResult fakeHealthGet()
+
+Health check endpoint
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        try {
+            HealthCheckResult result = apiInstance.fakeHealthGet();
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#fakeHealthGet");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+This endpoint does not need any parameter.
+
+### Return type
+
+[**HealthCheckResult**](HealthCheckResult.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: Not defined
+- **Accept**: application/json
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | The instance started successfully |  -  |
+
+
+## fakeHttpSignatureTest
+
+> void fakeHttpSignatureTest(pet, query1, header1)
+
+test http signature authentication
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.auth.*;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+        
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        Pet pet = new Pet(); // Pet | Pet object that needs to be added to the store
+        String query1 = "query1_example"; // String | query parameter
+        String header1 = "header1_example"; // String | header parameter
+        try {
+            void result = apiInstance.fakeHttpSignatureTest(pet, query1, header1);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#fakeHttpSignatureTest");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **pet** | [**Pet**](Pet.md)| Pet object that needs to be added to the store | |
+| **query1** | **String**| query parameter | [optional] |
+| **header1** | **String**| header parameter | [optional] |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+[http_signature_test](../README.md#http_signature_test)
+
+### HTTP request headers
+
+- **Content-Type**: application/json, application/xml
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | The instance started successfully |  -  |
+
+
+## fakeOuterBooleanSerialize
+
+> Boolean fakeOuterBooleanSerialize(body)
+
+
+
+Test serialization of outer boolean types
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        Boolean body = true; // Boolean | Input boolean as post body
+        try {
+            Boolean result = apiInstance.fakeOuterBooleanSerialize(body);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#fakeOuterBooleanSerialize");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **body** | **Boolean**| Input boolean as post body | [optional] |
+
+### Return type
+
+**Boolean**
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: */*
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Output boolean |  -  |
+
+
+## fakeOuterCompositeSerialize
+
+> OuterComposite fakeOuterCompositeSerialize(outerComposite)
+
+
+
+Test serialization of object with outer number type
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        OuterComposite outerComposite = new OuterComposite(); // OuterComposite | Input composite as post body
+        try {
+            OuterComposite result = apiInstance.fakeOuterCompositeSerialize(outerComposite);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#fakeOuterCompositeSerialize");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **outerComposite** | [**OuterComposite**](OuterComposite.md)| Input composite as post body | [optional] |
+
+### Return type
+
+[**OuterComposite**](OuterComposite.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: */*
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Output composite |  -  |
+
+
+## fakeOuterNumberSerialize
+
+> BigDecimal fakeOuterNumberSerialize(body)
+
+
+
+Test serialization of outer number types
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        BigDecimal body = new BigDecimal(78); // BigDecimal | Input number as post body
+        try {
+            BigDecimal result = apiInstance.fakeOuterNumberSerialize(body);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#fakeOuterNumberSerialize");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **body** | **BigDecimal**| Input number as post body | [optional] |
+
+### Return type
+
+[**BigDecimal**](BigDecimal.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: */*
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Output number |  -  |
+
+
+## fakeOuterStringSerialize
+
+> String fakeOuterStringSerialize(body)
+
+
+
+Test serialization of outer string types
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        String body = "body_example"; // String | Input string as post body
+        try {
+            String result = apiInstance.fakeOuterStringSerialize(body);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#fakeOuterStringSerialize");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **body** | **String**| Input string as post body | [optional] |
+
+### Return type
+
+**String**
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: */*
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Output string |  -  |
+
+
+## fakePropertyEnumIntegerSerialize
+
+> OuterObjectWithEnumProperty fakePropertyEnumIntegerSerialize(outerObjectWithEnumProperty)
+
+
+
+Test serialization of enum (int) properties with examples
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        OuterObjectWithEnumProperty outerObjectWithEnumProperty = new OuterObjectWithEnumProperty(); // OuterObjectWithEnumProperty | Input enum (int) as post body
+        try {
+            OuterObjectWithEnumProperty result = apiInstance.fakePropertyEnumIntegerSerialize(outerObjectWithEnumProperty);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#fakePropertyEnumIntegerSerialize");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **outerObjectWithEnumProperty** | [**OuterObjectWithEnumProperty**](OuterObjectWithEnumProperty.md)| Input enum (int) as post body | |
+
+### Return type
+
+[**OuterObjectWithEnumProperty**](OuterObjectWithEnumProperty.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: */*
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Output enum (int) |  -  |
+
+
+## testAdditionalPropertiesReference
+
+> void testAdditionalPropertiesReference(requestBody)
+
+test referenced additionalProperties
+
+
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        Map<String, Object> requestBody = null; // Map<String, Object> | request body
+        try {
+            void result = apiInstance.testAdditionalPropertiesReference(requestBody);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testAdditionalPropertiesReference");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **requestBody** | [**Map&lt;String, Object&gt;**](Object.md)| request body | |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
+
+## testBodyWithBinary
+
+> void testBodyWithBinary(body)
+
+
+
+For this test, the body has to be a binary file.
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        File body = new File("/path/to/file"); // File | image to upload
+        try {
+            void result = apiInstance.testBodyWithBinary(body);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testBodyWithBinary");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **body** | **File**| image to upload | |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: image/png
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Success |  -  |
+
+
+## testBodyWithFileSchema
+
+> void testBodyWithFileSchema(fileSchemaTestClass)
+
+
+
+For this test, the body for this request must reference a schema named &#x60;File&#x60;.
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        FileSchemaTestClass fileSchemaTestClass = new FileSchemaTestClass(); // FileSchemaTestClass | 
+        try {
+            void result = apiInstance.testBodyWithFileSchema(fileSchemaTestClass);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testBodyWithFileSchema");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **fileSchemaTestClass** | [**FileSchemaTestClass**](FileSchemaTestClass.md)|  | |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Success |  -  |
+
+
+## testBodyWithQueryParams
+
+> void testBodyWithQueryParams(query, user)
+
+
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        String query = "query_example"; // String | 
+        User user = new User(); // User | 
+        try {
+            void result = apiInstance.testBodyWithQueryParams(query, user);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testBodyWithQueryParams");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **query** | **String**|  | |
+| **user** | [**User**](User.md)|  | |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Success |  -  |
+
+
+## testClientModel
+
+> Client testClientModel(client)
+
+To test \&quot;client\&quot; model
+
+To test \&quot;client\&quot; model
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        Client client = new Client(); // Client | client model
+        try {
+            Client result = apiInstance.testClientModel(client);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testClientModel");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **client** | [**Client**](Client.md)| client model | |
+
+### Return type
+
+[**Client**](Client.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: application/json
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
+
+## testEndpointParameters
+
+> void testEndpointParameters(number, _double, patternWithoutDelimiter, _byte, integer, int32, int64, _float, string, binary, date, dateTime, password, paramCallback)
+
+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 
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.auth.*;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+        
+        // Configure HTTP basic authorization: http_basic_test
+        HttpBasicAuth http_basic_test = (HttpBasicAuth) defaultClient.getAuthentication("http_basic_test");
+        http_basic_test.setUsername("YOUR USERNAME");
+        http_basic_test.setPassword("YOUR PASSWORD");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        BigDecimal number = new BigDecimal(78); // BigDecimal | None
+        Double _double = 3.4D; // Double | None
+        String patternWithoutDelimiter = "patternWithoutDelimiter_example"; // String | None
+        byte[] _byte = null; // byte[] | None
+        Integer integer = 56; // Integer | None
+        Integer int32 = 56; // Integer | None
+        Long int64 = 56L; // Long | None
+        Float _float = 3.4F; // Float | None
+        String string = "string_example"; // String | None
+        File binary = new File("/path/to/file"); // File | None
+        Date date = new Date(); // Date | None
+        Date dateTime = new Date(); // Date | None
+        String password = "password_example"; // String | None
+        String paramCallback = "paramCallback_example"; // String | None
+        try {
+            void result = apiInstance.testEndpointParameters(number, _double, patternWithoutDelimiter, _byte, integer, int32, int64, _float, string, binary, date, dateTime, password, paramCallback);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testEndpointParameters");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **number** | **BigDecimal**| None | |
+| **_double** | **Double**| None | |
+| **patternWithoutDelimiter** | **String**| None | |
+| **_byte** | **byte[]**| None | |
+| **integer** | **Integer**| None | [optional] |
+| **int32** | **Integer**| None | [optional] |
+| **int64** | **Long**| None | [optional] |
+| **_float** | **Float**| None | [optional] |
+| **string** | **String**| None | [optional] |
+| **binary** | **File**| None | [optional] |
+| **date** | **Date**| None | [optional] |
+| **dateTime** | **Date**| None | [optional] |
+| **password** | **String**| None | [optional] |
+| **paramCallback** | **String**| None | [optional] |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+[http_basic_test](../README.md#http_basic_test)
+
+### HTTP request headers
+
+- **Content-Type**: application/x-www-form-urlencoded
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **400** | Invalid username supplied |  -  |
+| **404** | User not found |  -  |
+
+
+## testEnumParameters
+
+> void testEnumParameters(enumHeaderStringArray, enumHeaderString, enumQueryStringArray, enumQueryString, enumQueryInteger, enumQueryDouble, enumQueryModelArray, enumFormStringArray, enumFormString)
+
+To test enum parameters
+
+To test enum parameters
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        List<String> enumHeaderStringArray = Arrays.asList("$"); // List<String> | Header parameter enum test (string array)
+        String enumHeaderString = "_abc"; // String | Header parameter enum test (string)
+        List<String> enumQueryStringArray = Arrays.asList("$"); // List<String> | Query parameter enum test (string array)
+        String enumQueryString = "_abc"; // String | Query parameter enum test (string)
+        Integer enumQueryInteger = 1; // Integer | Query parameter enum test (double)
+        Double enumQueryDouble = 1.1D; // Double | Query parameter enum test (double)
+        List<EnumClass> enumQueryModelArray = Arrays.asList(-efg); // List<EnumClass> | 
+        List<String> enumFormStringArray = Arrays.asList("$"); // List<String> | Form parameter enum test (string array)
+        String enumFormString = "_abc"; // String | Form parameter enum test (string)
+        try {
+            void result = apiInstance.testEnumParameters(enumHeaderStringArray, enumHeaderString, enumQueryStringArray, enumQueryString, enumQueryInteger, enumQueryDouble, enumQueryModelArray, enumFormStringArray, enumFormString);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testEnumParameters");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **enumHeaderStringArray** | [**List&lt;String&gt;**](String.md)| Header parameter enum test (string array) | [optional] [enum: >, $] |
+| **enumHeaderString** | **String**| Header parameter enum test (string) | [optional] [default to -efg] [enum: _abc, -efg, (xyz)] |
+| **enumQueryStringArray** | [**List&lt;String&gt;**](String.md)| Query parameter enum test (string array) | [optional] [enum: >, $] |
+| **enumQueryString** | **String**| Query parameter enum test (string) | [optional] [default to -efg] [enum: _abc, -efg, (xyz)] |
+| **enumQueryInteger** | **Integer**| Query parameter enum test (double) | [optional] [enum: 1, -2] |
+| **enumQueryDouble** | **Double**| Query parameter enum test (double) | [optional] [enum: 1.1, -1.2] |
+| **enumQueryModelArray** | [**List&lt;EnumClass&gt;**](EnumClass.md)|  | [optional] |
+| **enumFormStringArray** | [**List&lt;String&gt;**](String.md)| Form parameter enum test (string array) | [optional] [enum: >, $] |
+| **enumFormString** | **String**| Form parameter enum test (string) | [optional] [default to -efg] [enum: _abc, -efg, (xyz)] |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/x-www-form-urlencoded
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **400** | Invalid request |  -  |
+| **404** | Not found |  -  |
+
+
+## testGroupParameters
+
+> void testGroupParameters(requiredStringGroup, requiredBooleanGroup, requiredInt64Group, stringGroup, booleanGroup, int64Group)
+
+Fake endpoint to test group parameters (optional)
+
+Fake endpoint to test group parameters (optional)
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.auth.*;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+        
+        // Configure HTTP bearer authorization: bearer_test
+        HttpBearerAuth bearer_test = (HttpBearerAuth) defaultClient.getAuthentication("bearer_test");
+        bearer_test.setBearerToken("BEARER TOKEN");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        Integer requiredStringGroup = 56; // Integer | Required String in group parameters
+        Boolean requiredBooleanGroup = true; // Boolean | Required Boolean in group parameters
+        Long requiredInt64Group = 56L; // Long | Required Integer in group parameters
+        Integer stringGroup = 56; // Integer | String in group parameters
+        Boolean booleanGroup = true; // Boolean | Boolean in group parameters
+        Long int64Group = 56L; // Long | Integer in group parameters
+        try {
+            void result = apiInstance.testGroupParameters(requiredStringGroup, requiredBooleanGroup, requiredInt64Group, stringGroup, booleanGroup, int64Group);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testGroupParameters");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **requiredStringGroup** | **Integer**| Required String in group parameters | |
+| **requiredBooleanGroup** | **Boolean**| Required Boolean in group parameters | |
+| **requiredInt64Group** | **Long**| Required Integer in group parameters | |
+| **stringGroup** | **Integer**| String in group parameters | [optional] |
+| **booleanGroup** | **Boolean**| Boolean in group parameters | [optional] |
+| **int64Group** | **Long**| Integer in group parameters | [optional] |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+[bearer_test](../README.md#bearer_test)
+
+### HTTP request headers
+
+- **Content-Type**: Not defined
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **400** | Something wrong |  -  |
+
+
+## testInlineAdditionalProperties
+
+> void testInlineAdditionalProperties(requestBody)
+
+test inline additionalProperties
+
+
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        Map<String, String> requestBody = new HashMap(); // Map<String, String> | request body
+        try {
+            void result = apiInstance.testInlineAdditionalProperties(requestBody);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testInlineAdditionalProperties");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **requestBody** | [**Map&lt;String, String&gt;**](String.md)| request body | |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
+
+## testInlineFreeformAdditionalProperties
+
+> void testInlineFreeformAdditionalProperties(testInlineFreeformAdditionalPropertiesRequest)
+
+test inline free-form additionalProperties
+
+
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        TestInlineFreeformAdditionalPropertiesRequest testInlineFreeformAdditionalPropertiesRequest = new TestInlineFreeformAdditionalPropertiesRequest(); // TestInlineFreeformAdditionalPropertiesRequest | request body
+        try {
+            void result = apiInstance.testInlineFreeformAdditionalProperties(testInlineFreeformAdditionalPropertiesRequest);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testInlineFreeformAdditionalProperties");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **testInlineFreeformAdditionalPropertiesRequest** | [**TestInlineFreeformAdditionalPropertiesRequest**](TestInlineFreeformAdditionalPropertiesRequest.md)| request body | |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
+
+## testJsonFormData
+
+> void testJsonFormData(param, param2)
+
+test json serialization of form data
+
+
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        String param = "param_example"; // String | field1
+        String param2 = "param2_example"; // String | field2
+        try {
+            void result = apiInstance.testJsonFormData(param, param2);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testJsonFormData");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **param** | **String**| field1 | |
+| **param2** | **String**| field2 | |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/x-www-form-urlencoded
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
+
+## testNullable
+
+> void testNullable(childWithNullable)
+
+test nullable parent property
+
+
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        ChildWithNullable childWithNullable = new ChildWithNullable(); // ChildWithNullable | request body
+        try {
+            void result = apiInstance.testNullable(childWithNullable);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testNullable");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **childWithNullable** | [**ChildWithNullable**](ChildWithNullable.md)| request body | |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
+
+## testQueryParameterCollectionFormat
+
+> void testQueryParameterCollectionFormat(pipe, ioutil, http, url, context, allowEmpty, language)
+
+
+
+To test the collection format in query parameters
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        List<String> pipe = Arrays.asList(); // List<String> | 
+        List<String> ioutil = Arrays.asList(); // List<String> | 
+        List<String> http = Arrays.asList(); // List<String> | 
+        List<String> url = Arrays.asList(); // List<String> | 
+        List<String> context = Arrays.asList(); // List<String> | 
+        String allowEmpty = "allowEmpty_example"; // String | 
+        Map<String, String> language = new HashMap(); // Map<String, String> | 
+        try {
+            void result = apiInstance.testQueryParameterCollectionFormat(pipe, ioutil, http, url, context, allowEmpty, language);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testQueryParameterCollectionFormat");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **pipe** | [**List&lt;String&gt;**](String.md)|  | |
+| **ioutil** | [**List&lt;String&gt;**](String.md)|  | |
+| **http** | [**List&lt;String&gt;**](String.md)|  | |
+| **url** | [**List&lt;String&gt;**](String.md)|  | |
+| **context** | [**List&lt;String&gt;**](String.md)|  | |
+| **allowEmpty** | **String**|  | |
+| **language** | [**Map&lt;String, String&gt;**](String.md)|  | [optional] |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: Not defined
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Success |  -  |
+
+
+## testStringMapReference
+
+> void testStringMapReference(requestBody)
+
+test referenced string map
+
+
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        Map<String, String> requestBody = new HashMap(); // Map<String, String> | request body
+        try {
+            void result = apiInstance.testStringMapReference(requestBody);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testStringMapReference");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **requestBody** | [**Map&lt;String, String&gt;**](String.md)| request body | |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/FakeBigDecimalMap200Response.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/FakeBigDecimalMap200Response.md
new file mode 100644
index 00000000000..475be1d2d73
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/FakeBigDecimalMap200Response.md
@@ -0,0 +1,14 @@
+
+
+# FakeBigDecimalMap200Response
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**someId** | **BigDecimal** |  |  [optional] |
+|**someMap** | **Map&lt;String, BigDecimal&gt;** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/FakeClassnameTags123Api.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/FakeClassnameTags123Api.md
new file mode 100644
index 00000000000..e4ff70ed909
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/FakeClassnameTags123Api.md
@@ -0,0 +1,82 @@
+# FakeClassnameTags123Api
+
+All URIs are relative to *http://petstore.swagger.io:80/v2*
+
+| Method | HTTP request | Description |
+|------------- | ------------- | -------------|
+| [**testClassname**](FakeClassnameTags123Api.md#testClassname) | **PATCH** /fake_classname_test | To test class name in snake case |
+
+
+
+## testClassname
+
+> Client testClassname(client)
+
+To test class name in snake case
+
+To test class name in snake case
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.auth.*;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeClassnameTags123Api;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+        
+        // Configure API key authorization: api_key_query
+        ApiKeyAuth api_key_query = (ApiKeyAuth) defaultClient.getAuthentication("api_key_query");
+        api_key_query.setApiKey("YOUR API KEY");
+        // Uncomment the following line to set a prefix for the API key, e.g. "Token" (defaults to null)
+        //api_key_query.setApiKeyPrefix("Token");
+
+        FakeClassnameTags123Api apiInstance = new FakeClassnameTags123Api(defaultClient);
+        Client client = new Client(); // Client | client model
+        try {
+            Client result = apiInstance.testClassname(client);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeClassnameTags123Api#testClassname");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **client** | [**Client**](Client.md)| client model | |
+
+### Return type
+
+[**Client**](Client.md)
+
+### Authorization
+
+[api_key_query](../README.md#api_key_query)
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: application/json
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/FileSchemaTestClass.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/FileSchemaTestClass.md
new file mode 100644
index 00000000000..85d1a063669
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/FileSchemaTestClass.md
@@ -0,0 +1,14 @@
+
+
+# FileSchemaTestClass
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**_file** | [**ModelFile**](ModelFile.md) |  |  [optional] |
+|**files** | [**List&lt;ModelFile&gt;**](ModelFile.md) |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Foo.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Foo.md
new file mode 100644
index 00000000000..6b3f0556528
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Foo.md
@@ -0,0 +1,13 @@
+
+
+# Foo
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**bar** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/FooGetDefaultResponse.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/FooGetDefaultResponse.md
new file mode 100644
index 00000000000..ff3d7a3a56c
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/FooGetDefaultResponse.md
@@ -0,0 +1,13 @@
+
+
+# FooGetDefaultResponse
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**string** | [**Foo**](Foo.md) |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/FormatTest.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/FormatTest.md
new file mode 100644
index 00000000000..d5b492c6e4e
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/FormatTest.md
@@ -0,0 +1,28 @@
+
+
+# FormatTest
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**integer** | **Integer** |  |  [optional] |
+|**int32** | **Integer** |  |  [optional] |
+|**int64** | **Long** |  |  [optional] |
+|**number** | **BigDecimal** |  |  |
+|**_float** | **Float** |  |  [optional] |
+|**_double** | **Double** |  |  [optional] |
+|**decimal** | **BigDecimal** |  |  [optional] |
+|**string** | **String** |  |  [optional] |
+|**_byte** | **byte[]** |  |  |
+|**binary** | **File** |  |  [optional] |
+|**date** | **Date** |  |  |
+|**dateTime** | **Date** |  |  [optional] |
+|**uuid** | **UUID** |  |  [optional] |
+|**password** | **String** |  |  |
+|**patternWithDigits** | **String** | A string that is a 10 digit number. Can have leading zeros. |  [optional] |
+|**patternWithDigitsAndDelimiter** | **String** | A string starting with &#39;image_&#39; (case insensitive) and one to three digits following i.e. Image_01. |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/HasOnlyReadOnly.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/HasOnlyReadOnly.md
new file mode 100644
index 00000000000..29da5205dbb
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/HasOnlyReadOnly.md
@@ -0,0 +1,14 @@
+
+
+# HasOnlyReadOnly
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**bar** | **String** |  |  [optional] [readonly] |
+|**foo** | **String** |  |  [optional] [readonly] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/HealthCheckResult.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/HealthCheckResult.md
new file mode 100644
index 00000000000..4885e6f1cad
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/HealthCheckResult.md
@@ -0,0 +1,14 @@
+
+
+# HealthCheckResult
+
+Just a string to inform instance is up and running. Make it nullable in hope to get it as pointer in generated model.
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**nullableMessage** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/MapTest.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/MapTest.md
new file mode 100644
index 00000000000..54380188e1d
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/MapTest.md
@@ -0,0 +1,25 @@
+
+
+# MapTest
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**mapMapOfString** | **Map&lt;String, Map&lt;String, String&gt;&gt;** |  |  [optional] |
+|**mapOfEnumString** | [**Map&lt;String, InnerEnum&gt;**](#Map&lt;String, InnerEnum&gt;) |  |  [optional] |
+|**directMap** | **Map&lt;String, Boolean&gt;** |  |  [optional] |
+|**indirectMap** | **Map&lt;String, Boolean&gt;** |  |  [optional] |
+
+
+
+## Enum: Map&lt;String, InnerEnum&gt;
+
+| Name | Value |
+|---- | -----|
+| UPPER | &quot;UPPER&quot; |
+| LOWER | &quot;lower&quot; |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/MixedPropertiesAndAdditionalPropertiesClass.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/MixedPropertiesAndAdditionalPropertiesClass.md
new file mode 100644
index 00000000000..f9867c07e7c
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/MixedPropertiesAndAdditionalPropertiesClass.md
@@ -0,0 +1,15 @@
+
+
+# MixedPropertiesAndAdditionalPropertiesClass
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**uuid** | **UUID** |  |  [optional] |
+|**dateTime** | **Date** |  |  [optional] |
+|**map** | [**Map&lt;String, Animal&gt;**](Animal.md) |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Model200Response.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Model200Response.md
new file mode 100644
index 00000000000..109411580c6
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Model200Response.md
@@ -0,0 +1,15 @@
+
+
+# Model200Response
+
+Model for testing model name starting with number
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**name** | **Integer** |  |  [optional] |
+|**propertyClass** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ModelApiResponse.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ModelApiResponse.md
index cd7e3c400be..e374c2dd2de 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ModelApiResponse.md
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ModelApiResponse.md
@@ -2,7 +2,6 @@
 
 # ModelApiResponse
 
-Describes the result of uploading an image resource
 
 ## Properties
 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ModelFile.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ModelFile.md
new file mode 100644
index 00000000000..adcde984f52
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ModelFile.md
@@ -0,0 +1,14 @@
+
+
+# ModelFile
+
+Must be named `File` for test.
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**sourceURI** | **String** | Test capitalization |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ModelList.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ModelList.md
new file mode 100644
index 00000000000..f93ab7dde8d
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ModelList.md
@@ -0,0 +1,13 @@
+
+
+# ModelList
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**_123list** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ModelReturn.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ModelReturn.md
new file mode 100644
index 00000000000..0bd356861eb
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ModelReturn.md
@@ -0,0 +1,14 @@
+
+
+# ModelReturn
+
+Model for testing reserved words
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**_return** | **Integer** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Name.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Name.md
new file mode 100644
index 00000000000..c901d943530
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Name.md
@@ -0,0 +1,17 @@
+
+
+# Name
+
+Model for testing model name same as property name
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**name** | **Integer** |  |  |
+|**snakeCase** | **Integer** |  |  [optional] [readonly] |
+|**property** | **String** |  |  [optional] |
+|**_123number** | **Integer** |  |  [optional] [readonly] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/NullableClass.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/NullableClass.md
new file mode 100644
index 00000000000..ba2b7f38034
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/NullableClass.md
@@ -0,0 +1,24 @@
+
+
+# NullableClass
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**integerProp** | **Integer** |  |  [optional] |
+|**numberProp** | **BigDecimal** |  |  [optional] |
+|**booleanProp** | **Boolean** |  |  [optional] |
+|**stringProp** | **String** |  |  [optional] |
+|**dateProp** | **Date** |  |  [optional] |
+|**datetimeProp** | **Date** |  |  [optional] |
+|**arrayNullableProp** | **List&lt;Object&gt;** |  |  [optional] |
+|**arrayAndItemsNullableProp** | **List&lt;Object&gt;** |  |  [optional] |
+|**arrayItemsNullable** | **List&lt;Object&gt;** |  |  [optional] |
+|**objectNullableProp** | **Map&lt;String, Object&gt;** |  |  [optional] |
+|**objectAndItemsNullableProp** | **Map&lt;String, Object&gt;** |  |  [optional] |
+|**objectItemsNullable** | **Map&lt;String, Object&gt;** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/NumberOnly.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/NumberOnly.md
new file mode 100644
index 00000000000..b8ed1a4cfae
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/NumberOnly.md
@@ -0,0 +1,13 @@
+
+
+# NumberOnly
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**justNumber** | **BigDecimal** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ObjectWithDeprecatedFields.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ObjectWithDeprecatedFields.md
new file mode 100644
index 00000000000..f1cf571f4c0
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ObjectWithDeprecatedFields.md
@@ -0,0 +1,16 @@
+
+
+# ObjectWithDeprecatedFields
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**uuid** | **String** |  |  [optional] |
+|**id** | **BigDecimal** |  |  [optional] |
+|**deprecatedRef** | [**DeprecatedObject**](DeprecatedObject.md) |  |  [optional] |
+|**bars** | **List&lt;String&gt;** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Order.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Order.md
index 7bfa42e6a90..4993c503e5f 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Order.md
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Order.md
@@ -2,7 +2,6 @@
 
 # Order
 
-An order for a pets from the pet store
 
 ## Properties
 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/OuterComposite.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/OuterComposite.md
new file mode 100644
index 00000000000..98b56e0763f
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/OuterComposite.md
@@ -0,0 +1,15 @@
+
+
+# OuterComposite
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**myNumber** | **BigDecimal** |  |  [optional] |
+|**myString** | **String** |  |  [optional] |
+|**myBoolean** | **Boolean** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/OuterEnum.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/OuterEnum.md
new file mode 100644
index 00000000000..1f9b723eb8e
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/OuterEnum.md
@@ -0,0 +1,15 @@
+
+
+# OuterEnum
+
+## Enum
+
+
+* `PLACED` (value: `"placed"`)
+
+* `APPROVED` (value: `"approved"`)
+
+* `DELIVERED` (value: `"delivered"`)
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/OuterEnumDefaultValue.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/OuterEnumDefaultValue.md
new file mode 100644
index 00000000000..cbc7f4ba54d
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/OuterEnumDefaultValue.md
@@ -0,0 +1,15 @@
+
+
+# OuterEnumDefaultValue
+
+## Enum
+
+
+* `PLACED` (value: `"placed"`)
+
+* `APPROVED` (value: `"approved"`)
+
+* `DELIVERED` (value: `"delivered"`)
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/OuterEnumInteger.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/OuterEnumInteger.md
new file mode 100644
index 00000000000..f71dea30ad0
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/OuterEnumInteger.md
@@ -0,0 +1,15 @@
+
+
+# OuterEnumInteger
+
+## Enum
+
+
+* `NUMBER_0` (value: `0`)
+
+* `NUMBER_1` (value: `1`)
+
+* `NUMBER_2` (value: `2`)
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/OuterEnumIntegerDefaultValue.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/OuterEnumIntegerDefaultValue.md
new file mode 100644
index 00000000000..99e6389f427
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/OuterEnumIntegerDefaultValue.md
@@ -0,0 +1,15 @@
+
+
+# OuterEnumIntegerDefaultValue
+
+## Enum
+
+
+* `NUMBER_0` (value: `0`)
+
+* `NUMBER_1` (value: `1`)
+
+* `NUMBER_2` (value: `2`)
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/OuterObjectWithEnumProperty.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/OuterObjectWithEnumProperty.md
new file mode 100644
index 00000000000..0fafaaa2715
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/OuterObjectWithEnumProperty.md
@@ -0,0 +1,13 @@
+
+
+# OuterObjectWithEnumProperty
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**value** | **OuterEnumInteger** |  |  |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ParentWithNullable.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ParentWithNullable.md
new file mode 100644
index 00000000000..e4d32298563
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ParentWithNullable.md
@@ -0,0 +1,22 @@
+
+
+# ParentWithNullable
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**type** | [**TypeEnum**](#TypeEnum) |  |  [optional] |
+|**nullableProperty** | **String** |  |  [optional] |
+
+
+
+## Enum: TypeEnum
+
+| Name | Value |
+|---- | -----|
+| CHILD_WITH_NULLABLE | &quot;ChildWithNullable&quot; |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Pet.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Pet.md
index 8bb36330123..54af77a9f5a 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Pet.md
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Pet.md
@@ -2,7 +2,6 @@
 
 # Pet
 
-A pet for sale in the pet store
 
 ## Properties
 
@@ -11,7 +10,7 @@ A pet for sale in the pet store
 |**id** | **Long** |  |  [optional] |
 |**category** | [**Category**](Category.md) |  |  [optional] |
 |**name** | **String** |  |  |
-|**photoUrls** | **List&lt;String&gt;** |  |  |
+|**photoUrls** | **Set&lt;String&gt;** |  |  |
 |**tags** | [**List&lt;Tag&gt;**](Tag.md) |  |  [optional] |
 |**status** | [**StatusEnum**](#StatusEnum) | pet status in the store |  [optional] |
 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/PetApi.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/PetApi.md
index fb5361b0808..bf4b4333d96 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/PetApi.md
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/PetApi.md
@@ -1,6 +1,6 @@
 # PetApi
 
-All URIs are relative to *http://petstore.swagger.io/v2*
+All URIs are relative to *http://petstore.swagger.io:80/v2*
 
 | Method | HTTP request | Description |
 |------------- | ------------- | -------------|
@@ -12,12 +12,13 @@ All URIs are relative to *http://petstore.swagger.io/v2*
 | [**updatePet**](PetApi.md#updatePet) | **PUT** /pet | Update an existing pet |
 | [**updatePetWithForm**](PetApi.md#updatePetWithForm) | **POST** /pet/{petId} | Updates a pet in the store with form data |
 | [**uploadFile**](PetApi.md#uploadFile) | **POST** /pet/{petId}/uploadImage | uploads an image |
+| [**uploadFileWithRequiredFile**](PetApi.md#uploadFileWithRequiredFile) | **POST** /fake/{petId}/uploadImageWithRequiredFile | uploads an image (required) |
 
 
 
 ## addPet
 
-> Pet addPet(pet)
+> void addPet(pet)
 
 Add a new pet to the store
 
@@ -37,7 +38,7 @@ import org.openapitools.client.api.PetApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
         
         // Configure OAuth2 access token for authorization: petstore_auth
         OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
@@ -46,7 +47,7 @@ public class Example {
         PetApi apiInstance = new PetApi(defaultClient);
         Pet pet = new Pet(); // Pet | Pet object that needs to be added to the store
         try {
-            Pet result = apiInstance.addPet(pet);
+            void result = apiInstance.addPet(pet);
             System.out.println(result);
         } catch (ApiException e) {
             System.err.println("Exception when calling PetApi#addPet");
@@ -68,7 +69,7 @@ public class Example {
 
 ### Return type
 
-[**Pet**](Pet.md)
+[**void**](Void.md)
 
 ### Authorization
 
@@ -77,13 +78,13 @@ public class Example {
 ### HTTP request headers
 
 - **Content-Type**: application/json, application/xml
-- **Accept**: application/xml, application/json
+- **Accept**: Not defined
 
 
 ### HTTP response details
 | Status code | Description | Response headers |
 |-------------|-------------|------------------|
-| **200** | successful operation |  -  |
+| **200** | Successful operation |  -  |
 | **405** | Invalid input |  -  |
 
 
@@ -109,7 +110,7 @@ import org.openapitools.client.api.PetApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
         
         // Configure OAuth2 access token for authorization: petstore_auth
         OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
@@ -157,6 +158,7 @@ public class Example {
 ### HTTP response details
 | Status code | Description | Response headers |
 |-------------|-------------|------------------|
+| **200** | Successful operation |  -  |
 | **400** | Invalid pet value |  -  |
 
 
@@ -182,7 +184,7 @@ import org.openapitools.client.api.PetApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
         
         // Configure OAuth2 access token for authorization: petstore_auth
         OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
@@ -234,7 +236,7 @@ public class Example {
 
 ## findPetsByTags
 
-> List&lt;Pet&gt; findPetsByTags(tags)
+> Set&lt;Pet&gt; findPetsByTags(tags)
 
 Finds Pets by tags
 
@@ -254,16 +256,16 @@ import org.openapitools.client.api.PetApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
         
         // Configure OAuth2 access token for authorization: petstore_auth
         OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
         petstore_auth.setAccessToken("YOUR ACCESS TOKEN");
 
         PetApi apiInstance = new PetApi(defaultClient);
-        List<String> tags = Arrays.asList(); // List<String> | Tags to filter by
+        Set<String> tags = Arrays.asList(); // Set<String> | Tags to filter by
         try {
-            List<Pet> result = apiInstance.findPetsByTags(tags);
+            Set<Pet> result = apiInstance.findPetsByTags(tags);
             System.out.println(result);
         } catch (ApiException e) {
             System.err.println("Exception when calling PetApi#findPetsByTags");
@@ -281,11 +283,11 @@ public class Example {
 
 | Name | Type | Description  | Notes |
 |------------- | ------------- | ------------- | -------------|
-| **tags** | [**List&lt;String&gt;**](String.md)| Tags to filter by | |
+| **tags** | [**Set&lt;String&gt;**](String.md)| Tags to filter by | |
 
 ### Return type
 
-[**List&lt;Pet&gt;**](Pet.md)
+[**Set&lt;Pet&gt;**](Pet.md)
 
 ### Authorization
 
@@ -326,7 +328,7 @@ import org.openapitools.client.api.PetApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
         
         // Configure API key authorization: api_key
         ApiKeyAuth api_key = (ApiKeyAuth) defaultClient.getAuthentication("api_key");
@@ -381,7 +383,7 @@ public class Example {
 
 ## updatePet
 
-> Pet updatePet(pet)
+> void updatePet(pet)
 
 Update an existing pet
 
@@ -401,7 +403,7 @@ import org.openapitools.client.api.PetApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
         
         // Configure OAuth2 access token for authorization: petstore_auth
         OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
@@ -410,7 +412,7 @@ public class Example {
         PetApi apiInstance = new PetApi(defaultClient);
         Pet pet = new Pet(); // Pet | Pet object that needs to be added to the store
         try {
-            Pet result = apiInstance.updatePet(pet);
+            void result = apiInstance.updatePet(pet);
             System.out.println(result);
         } catch (ApiException e) {
             System.err.println("Exception when calling PetApi#updatePet");
@@ -432,7 +434,7 @@ public class Example {
 
 ### Return type
 
-[**Pet**](Pet.md)
+[**void**](Void.md)
 
 ### Authorization
 
@@ -441,13 +443,13 @@ public class Example {
 ### HTTP request headers
 
 - **Content-Type**: application/json, application/xml
-- **Accept**: application/xml, application/json
+- **Accept**: Not defined
 
 
 ### HTTP response details
 | Status code | Description | Response headers |
 |-------------|-------------|------------------|
-| **200** | successful operation |  -  |
+| **200** | Successful operation |  -  |
 | **400** | Invalid ID supplied |  -  |
 | **404** | Pet not found |  -  |
 | **405** | Validation exception |  -  |
@@ -475,7 +477,7 @@ import org.openapitools.client.api.PetApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
         
         // Configure OAuth2 access token for authorization: petstore_auth
         OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
@@ -525,6 +527,7 @@ public class Example {
 ### HTTP response details
 | Status code | Description | Response headers |
 |-------------|-------------|------------------|
+| **200** | Successful operation |  -  |
 | **405** | Invalid input |  -  |
 
 
@@ -550,7 +553,7 @@ import org.openapitools.client.api.PetApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
         
         // Configure OAuth2 access token for authorization: petstore_auth
         OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
@@ -602,3 +605,78 @@ public class Example {
 |-------------|-------------|------------------|
 | **200** | successful operation |  -  |
 
+
+## uploadFileWithRequiredFile
+
+> ModelApiResponse uploadFileWithRequiredFile(petId, requiredFile, additionalMetadata)
+
+uploads an image (required)
+
+
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.auth.*;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.PetApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+        
+        // Configure OAuth2 access token for authorization: petstore_auth
+        OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
+        petstore_auth.setAccessToken("YOUR ACCESS TOKEN");
+
+        PetApi apiInstance = new PetApi(defaultClient);
+        Long petId = 56L; // Long | ID of pet to update
+        File requiredFile = new File("/path/to/file"); // File | file to upload
+        String additionalMetadata = "additionalMetadata_example"; // String | Additional data to pass to server
+        try {
+            ModelApiResponse result = apiInstance.uploadFileWithRequiredFile(petId, requiredFile, additionalMetadata);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling PetApi#uploadFileWithRequiredFile");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **petId** | **Long**| ID of pet to update | |
+| **requiredFile** | **File**| file to upload | |
+| **additionalMetadata** | **String**| Additional data to pass to server | [optional] |
+
+### Return type
+
+[**ModelApiResponse**](ModelApiResponse.md)
+
+### Authorization
+
+[petstore_auth](../README.md#petstore_auth)
+
+### HTTP request headers
+
+- **Content-Type**: multipart/form-data
+- **Accept**: application/json
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ReadOnlyFirst.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ReadOnlyFirst.md
new file mode 100644
index 00000000000..ad6af7ee155
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/ReadOnlyFirst.md
@@ -0,0 +1,14 @@
+
+
+# ReadOnlyFirst
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**bar** | **String** |  |  [optional] [readonly] |
+|**baz** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/SingleRefType.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/SingleRefType.md
new file mode 100644
index 00000000000..cc269bb871f
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/SingleRefType.md
@@ -0,0 +1,13 @@
+
+
+# SingleRefType
+
+## Enum
+
+
+* `ADMIN` (value: `"admin"`)
+
+* `USER` (value: `"user"`)
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/SpecialModelName.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/SpecialModelName.md
new file mode 100644
index 00000000000..4b6a06e3622
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/SpecialModelName.md
@@ -0,0 +1,13 @@
+
+
+# SpecialModelName
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**$specialPropertyName** | **Long** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/StoreApi.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/StoreApi.md
index ae64b8574e2..7e03edf04b7 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/StoreApi.md
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/StoreApi.md
@@ -1,12 +1,12 @@
 # StoreApi
 
-All URIs are relative to *http://petstore.swagger.io/v2*
+All URIs are relative to *http://petstore.swagger.io:80/v2*
 
 | Method | HTTP request | Description |
 |------------- | ------------- | -------------|
-| [**deleteOrder**](StoreApi.md#deleteOrder) | **DELETE** /store/order/{orderId} | Delete purchase order by ID |
+| [**deleteOrder**](StoreApi.md#deleteOrder) | **DELETE** /store/order/{order_id} | Delete purchase order by ID |
 | [**getInventory**](StoreApi.md#getInventory) | **GET** /store/inventory | Returns pet inventories by status |
-| [**getOrderById**](StoreApi.md#getOrderById) | **GET** /store/order/{orderId} | Find purchase order by ID |
+| [**getOrderById**](StoreApi.md#getOrderById) | **GET** /store/order/{order_id} | Find purchase order by ID |
 | [**placeOrder**](StoreApi.md#placeOrder) | **POST** /store/order | Place an order for a pet |
 
 
@@ -32,7 +32,7 @@ import org.openapitools.client.api.StoreApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         StoreApi apiInstance = new StoreApi(defaultClient);
         String orderId = "orderId_example"; // String | ID of the order that needs to be deleted
@@ -100,7 +100,7 @@ import org.openapitools.client.api.StoreApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
         
         // Configure API key authorization: api_key
         ApiKeyAuth api_key = (ApiKeyAuth) defaultClient.getAuthentication("api_key");
@@ -168,7 +168,7 @@ import org.openapitools.client.api.StoreApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         StoreApi apiInstance = new StoreApi(defaultClient);
         Long orderId = 56L; // Long | ID of pet that needs to be fetched
@@ -236,7 +236,7 @@ import org.openapitools.client.api.StoreApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         StoreApi apiInstance = new StoreApi(defaultClient);
         Order order = new Order(); // Order | order placed for purchasing the pet
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Tag.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Tag.md
index abfde4afb50..5088b2dd1c3 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Tag.md
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/Tag.md
@@ -2,7 +2,6 @@
 
 # Tag
 
-A tag for a pet
 
 ## Properties
 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/TestInlineFreeformAdditionalPropertiesRequest.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/TestInlineFreeformAdditionalPropertiesRequest.md
new file mode 100644
index 00000000000..dc066e6c7da
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/TestInlineFreeformAdditionalPropertiesRequest.md
@@ -0,0 +1,13 @@
+
+
+# TestInlineFreeformAdditionalPropertiesRequest
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**someProperty** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/User.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/User.md
index 426845227bd..08813e4b10b 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/User.md
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/User.md
@@ -2,7 +2,6 @@
 
 # User
 
-A User who is purchasing from the pet store
 
 ## Properties
 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/UserApi.md b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/UserApi.md
index 89c1bfc6026..d82f8da184b 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/docs/UserApi.md
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/docs/UserApi.md
@@ -1,6 +1,6 @@
 # UserApi
 
-All URIs are relative to *http://petstore.swagger.io/v2*
+All URIs are relative to *http://petstore.swagger.io:80/v2*
 
 | Method | HTTP request | Description |
 |------------- | ------------- | -------------|
@@ -30,20 +30,13 @@ This can only be done by the logged in user.
 import org.openapitools.client.ApiClient;
 import org.openapitools.client.ApiException;
 import org.openapitools.client.Configuration;
-import org.openapitools.client.auth.*;
 import org.openapitools.client.models.*;
 import org.openapitools.client.api.UserApi;
 
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
-        
-        // Configure API key authorization: api_key
-        ApiKeyAuth api_key = (ApiKeyAuth) defaultClient.getAuthentication("api_key");
-        api_key.setApiKey("YOUR API KEY");
-        // Uncomment the following line to set a prefix for the API key, e.g. "Token" (defaults to null)
-        //api_key.setApiKeyPrefix("Token");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         UserApi apiInstance = new UserApi(defaultClient);
         User user = new User(); // User | Created user object
@@ -74,7 +67,7 @@ public class Example {
 
 ### Authorization
 
-[api_key](../README.md#api_key)
+No authorization required
 
 ### HTTP request headers
 
@@ -103,20 +96,13 @@ Creates list of users with given input array
 import org.openapitools.client.ApiClient;
 import org.openapitools.client.ApiException;
 import org.openapitools.client.Configuration;
-import org.openapitools.client.auth.*;
 import org.openapitools.client.models.*;
 import org.openapitools.client.api.UserApi;
 
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
-        
-        // Configure API key authorization: api_key
-        ApiKeyAuth api_key = (ApiKeyAuth) defaultClient.getAuthentication("api_key");
-        api_key.setApiKey("YOUR API KEY");
-        // Uncomment the following line to set a prefix for the API key, e.g. "Token" (defaults to null)
-        //api_key.setApiKeyPrefix("Token");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         UserApi apiInstance = new UserApi(defaultClient);
         List<User> user = Arrays.asList(); // List<User> | List of user object
@@ -147,7 +133,7 @@ public class Example {
 
 ### Authorization
 
-[api_key](../README.md#api_key)
+No authorization required
 
 ### HTTP request headers
 
@@ -176,20 +162,13 @@ Creates list of users with given input array
 import org.openapitools.client.ApiClient;
 import org.openapitools.client.ApiException;
 import org.openapitools.client.Configuration;
-import org.openapitools.client.auth.*;
 import org.openapitools.client.models.*;
 import org.openapitools.client.api.UserApi;
 
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
-        
-        // Configure API key authorization: api_key
-        ApiKeyAuth api_key = (ApiKeyAuth) defaultClient.getAuthentication("api_key");
-        api_key.setApiKey("YOUR API KEY");
-        // Uncomment the following line to set a prefix for the API key, e.g. "Token" (defaults to null)
-        //api_key.setApiKeyPrefix("Token");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         UserApi apiInstance = new UserApi(defaultClient);
         List<User> user = Arrays.asList(); // List<User> | List of user object
@@ -220,7 +199,7 @@ public class Example {
 
 ### Authorization
 
-[api_key](../README.md#api_key)
+No authorization required
 
 ### HTTP request headers
 
@@ -249,20 +228,13 @@ This can only be done by the logged in user.
 import org.openapitools.client.ApiClient;
 import org.openapitools.client.ApiException;
 import org.openapitools.client.Configuration;
-import org.openapitools.client.auth.*;
 import org.openapitools.client.models.*;
 import org.openapitools.client.api.UserApi;
 
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
-        
-        // Configure API key authorization: api_key
-        ApiKeyAuth api_key = (ApiKeyAuth) defaultClient.getAuthentication("api_key");
-        api_key.setApiKey("YOUR API KEY");
-        // Uncomment the following line to set a prefix for the API key, e.g. "Token" (defaults to null)
-        //api_key.setApiKeyPrefix("Token");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         UserApi apiInstance = new UserApi(defaultClient);
         String username = "username_example"; // String | The name that needs to be deleted
@@ -293,7 +265,7 @@ public class Example {
 
 ### Authorization
 
-[api_key](../README.md#api_key)
+No authorization required
 
 ### HTTP request headers
 
@@ -329,7 +301,7 @@ import org.openapitools.client.api.UserApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         UserApi apiInstance = new UserApi(defaultClient);
         String username = "username_example"; // String | The name that needs to be fetched. Use user1 for testing.
@@ -397,7 +369,7 @@ import org.openapitools.client.api.UserApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         UserApi apiInstance = new UserApi(defaultClient);
         String username = "username_example"; // String | The user name for login
@@ -441,7 +413,7 @@ No authorization required
 ### HTTP response details
 | Status code | Description | Response headers |
 |-------------|-------------|------------------|
-| **200** | successful operation |  * Set-Cookie - Cookie authentication key for use with the &#x60;api_key&#x60; apiKey authentication. <br>  * X-Rate-Limit - calls per hour allowed by the user <br>  * X-Expires-After - date in UTC when token expires <br>  |
+| **200** | successful operation |  * X-Rate-Limit - calls per hour allowed by the user <br>  * X-Expires-After - date in UTC when token expires <br>  |
 | **400** | Invalid username/password supplied |  -  |
 
 
@@ -460,20 +432,13 @@ Logs out current logged in user session
 import org.openapitools.client.ApiClient;
 import org.openapitools.client.ApiException;
 import org.openapitools.client.Configuration;
-import org.openapitools.client.auth.*;
 import org.openapitools.client.models.*;
 import org.openapitools.client.api.UserApi;
 
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
-        
-        // Configure API key authorization: api_key
-        ApiKeyAuth api_key = (ApiKeyAuth) defaultClient.getAuthentication("api_key");
-        api_key.setApiKey("YOUR API KEY");
-        // Uncomment the following line to set a prefix for the API key, e.g. "Token" (defaults to null)
-        //api_key.setApiKeyPrefix("Token");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         UserApi apiInstance = new UserApi(defaultClient);
         try {
@@ -500,7 +465,7 @@ This endpoint does not need any parameter.
 
 ### Authorization
 
-[api_key](../README.md#api_key)
+No authorization required
 
 ### HTTP request headers
 
@@ -529,20 +494,13 @@ This can only be done by the logged in user.
 import org.openapitools.client.ApiClient;
 import org.openapitools.client.ApiException;
 import org.openapitools.client.Configuration;
-import org.openapitools.client.auth.*;
 import org.openapitools.client.models.*;
 import org.openapitools.client.api.UserApi;
 
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
-        
-        // Configure API key authorization: api_key
-        ApiKeyAuth api_key = (ApiKeyAuth) defaultClient.getAuthentication("api_key");
-        api_key.setApiKey("YOUR API KEY");
-        // Uncomment the following line to set a prefix for the API key, e.g. "Token" (defaults to null)
-        //api_key.setApiKeyPrefix("Token");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         UserApi apiInstance = new UserApi(defaultClient);
         String username = "username_example"; // String | name that need to be deleted
@@ -575,7 +533,7 @@ public class Example {
 
 ### Authorization
 
-[api_key](../README.md#api_key)
+No authorization required
 
 ### HTTP request headers
 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/pom.xml b/samples/client/petstore/java/microprofile-rest-client-3.0/pom.xml
index 4a245c6749f..d62c69aa795 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/pom.xml
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/pom.xml
@@ -4,7 +4,7 @@
   <artifactId>microprofile-rest-client-3</artifactId>
   <packaging>jar</packaging>
   <name>microprofile-rest-client-3</name>
-  <description>This is a sample server Petstore server. For this sample, you can use the api key &#x60;special-key&#x60; to test the authorization filters.</description>
+  <description>This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \&quot; \\</description>
   <version>1.0.0</version>
   <build>
     <sourceDirectory>src/main/java</sourceDirectory>
@@ -160,7 +160,7 @@
     <jackson.jaxrs.version>2.17.1</jackson.jaxrs.version>
     <jakarta.activation.version>2.1.0</jakarta.activation.version>
     <jakarta.annotation.version>2.0.0</jakarta.annotation.version>
-    <jakarta.json.bind.version>2.0.0</jakarta.json.bind.version>
+    <jakarta.json.bind.version>3.0.0</jakarta.json.bind.version>
     <jakarta.json.version>2.0.1</jakarta.json.version>
     <jakarta.ws.rs.version>3.0.0</jakarta.ws.rs.version>
     <jakarta.xml.bind.version>3.0.1</jakarta.xml.bind.version>
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/AnotherFakeApi.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/AnotherFakeApi.java
new file mode 100644
index 00000000000..c22b045c6ed
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/AnotherFakeApi.java
@@ -0,0 +1,54 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.api;
+
+import org.openapitools.client.model.Client;
+
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import jakarta.ws.rs.*;
+import jakarta.ws.rs.core.Response;
+import jakarta.ws.rs.core.MediaType;
+import org.apache.cxf.jaxrs.ext.multipart.*;
+
+
+import org.eclipse.microprofile.rest.client.annotation.RegisterProvider;
+import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
+
+/**
+ * OpenAPI Petstore
+ *
+ * <p>This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ */
+
+@RegisterRestClient(configKey="petstore")
+@RegisterProvider(ApiExceptionMapper.class)
+@Path("/another-fake/dummy")
+public interface AnotherFakeApi  {
+
+    /**
+     * To test special tags
+     *
+     * To test special tags and operation ID starting with number
+     *
+     */
+    @PATCH
+    
+    @Consumes({ "application/json" })
+    @Produces({ "application/json" })
+    Client call123testSpecialTags(Client client) throws ApiException, ProcessingException;
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/ApiException.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/ApiException.java
index 2fc6d04ee68..590cd07dc74 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/ApiException.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/ApiException.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/ApiExceptionMapper.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/ApiExceptionMapper.java
index 0dec2c6aec0..42895ef7d21 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/ApiExceptionMapper.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/ApiExceptionMapper.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/DefaultApi.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/DefaultApi.java
new file mode 100644
index 00000000000..2c7f381b933
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/DefaultApi.java
@@ -0,0 +1,47 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.api;
+
+import org.openapitools.client.model.FooGetDefaultResponse;
+
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import jakarta.ws.rs.*;
+import jakarta.ws.rs.core.Response;
+import jakarta.ws.rs.core.MediaType;
+import org.apache.cxf.jaxrs.ext.multipart.*;
+
+
+import org.eclipse.microprofile.rest.client.annotation.RegisterProvider;
+import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
+
+/**
+ * OpenAPI Petstore
+ *
+ * <p>This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ */
+
+@RegisterRestClient(configKey="petstore")
+@RegisterProvider(ApiExceptionMapper.class)
+@Path("/foo")
+public interface DefaultApi  {
+
+    @GET
+    
+    @Produces({ "application/json" })
+    FooGetDefaultResponse fooGet() throws ApiException, ProcessingException;
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/FakeApi.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/FakeApi.java
new file mode 100644
index 00000000000..c23faf8ba1b
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/FakeApi.java
@@ -0,0 +1,237 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.api;
+
+import java.math.BigDecimal;
+import org.openapitools.client.model.ChildWithNullable;
+import org.openapitools.client.model.Client;
+import java.util.Date;
+import org.openapitools.client.model.EnumClass;
+import org.openapitools.client.model.FakeBigDecimalMap200Response;
+import java.io.File;
+import org.openapitools.client.model.FileSchemaTestClass;
+import org.openapitools.client.model.HealthCheckResult;
+import org.openapitools.client.model.OuterComposite;
+import org.openapitools.client.model.OuterObjectWithEnumProperty;
+import org.openapitools.client.model.Pet;
+import org.openapitools.client.model.TestInlineFreeformAdditionalPropertiesRequest;
+import org.openapitools.client.model.User;
+
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import jakarta.ws.rs.*;
+import jakarta.ws.rs.core.Response;
+import jakarta.ws.rs.core.MediaType;
+import org.apache.cxf.jaxrs.ext.multipart.*;
+
+
+import org.eclipse.microprofile.rest.client.annotation.RegisterProvider;
+import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
+
+/**
+ * OpenAPI Petstore
+ *
+ * <p>This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ */
+
+@RegisterRestClient(configKey="petstore")
+@RegisterProvider(ApiExceptionMapper.class)
+@Path("/fake")
+public interface FakeApi  {
+
+    @GET
+    @Path("/BigDecimalMap")
+    @Produces({ "*/*" })
+    FakeBigDecimalMap200Response fakeBigDecimalMap() throws ApiException, ProcessingException;
+
+    /**
+     * Health check endpoint
+     *
+     */
+    @GET
+    @Path("/health")
+    @Produces({ "application/json" })
+    HealthCheckResult fakeHealthGet() throws ApiException, ProcessingException;
+
+    /**
+     * test http signature authentication
+     *
+     */
+    @GET
+    @Path("/http-signature-test")
+    @Consumes({ "application/json", "application/xml" })
+    void fakeHttpSignatureTest(Pet pet, @QueryParam("query_1") String query1, @HeaderParam("header_1")  String header1) throws ApiException, ProcessingException;
+
+    @POST
+    @Path("/outer/boolean")
+    @Consumes({ "application/json" })
+    @Produces({ "*/*" })
+    Boolean fakeOuterBooleanSerialize(Boolean body) throws ApiException, ProcessingException;
+
+    @POST
+    @Path("/outer/composite")
+    @Consumes({ "application/json" })
+    @Produces({ "*/*" })
+    OuterComposite fakeOuterCompositeSerialize(OuterComposite outerComposite) throws ApiException, ProcessingException;
+
+    @POST
+    @Path("/outer/number")
+    @Consumes({ "application/json" })
+    @Produces({ "*/*" })
+    BigDecimal fakeOuterNumberSerialize(BigDecimal body) throws ApiException, ProcessingException;
+
+    @POST
+    @Path("/outer/string")
+    @Consumes({ "application/json" })
+    @Produces({ "*/*" })
+    String fakeOuterStringSerialize(String body) throws ApiException, ProcessingException;
+
+    @POST
+    @Path("/property/enum-int")
+    @Consumes({ "application/json" })
+    @Produces({ "*/*" })
+    OuterObjectWithEnumProperty fakePropertyEnumIntegerSerialize(OuterObjectWithEnumProperty outerObjectWithEnumProperty) throws ApiException, ProcessingException;
+
+    /**
+     * test referenced additionalProperties
+     *
+     * 
+     *
+     */
+    @POST
+    @Path("/additionalProperties-reference")
+    @Consumes({ "application/json" })
+    void testAdditionalPropertiesReference(Map<String, Object> requestBody) throws ApiException, ProcessingException;
+
+    @PUT
+    @Path("/body-with-binary")
+    @Consumes({ "image/png" })
+    void testBodyWithBinary(File body) throws ApiException, ProcessingException;
+
+    @PUT
+    @Path("/body-with-file-schema")
+    @Consumes({ "application/json" })
+    void testBodyWithFileSchema(FileSchemaTestClass fileSchemaTestClass) throws ApiException, ProcessingException;
+
+    @PUT
+    @Path("/body-with-query-params")
+    @Consumes({ "application/json" })
+    void testBodyWithQueryParams(@QueryParam("query") String query, User user) throws ApiException, ProcessingException;
+
+    /**
+     * To test \&quot;client\&quot; model
+     *
+     * To test \&quot;client\&quot; model
+     *
+     */
+    @PATCH
+    
+    @Consumes({ "application/json" })
+    @Produces({ "application/json" })
+    Client testClientModel(Client client) throws ApiException, ProcessingException;
+
+    /**
+     * 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 
+     *
+     */
+    @POST
+    
+    @Consumes({ "application/x-www-form-urlencoded" })
+    void testEndpointParameters(@Multipart(value = "number")  BigDecimal number, @Multipart(value = "double")  Double _double, @Multipart(value = "pattern_without_delimiter")  String patternWithoutDelimiter, @Multipart(value = "byte")  byte[] _byte, @Multipart(value = "integer", required = false)  Integer integer, @Multipart(value = "int32", required = false)  Integer int32, @Multipart(value = "int64", required = false)  Long int64, @Multipart(value = "float", required = false)  Float _float, @Multipart(value = "string", required = false)  String string,  @Multipart(value = "binary" , required = false) Attachment binaryDetail, @Multipart(value = "date", required = false)  Date date, @Multipart(value = "dateTime", required = false)  Date dateTime, @Multipart(value = "password", required = false)  String password, @Multipart(value = "callback", required = false)  String paramCallback) throws ApiException, ProcessingException;
+
+    /**
+     * To test enum parameters
+     *
+     * To test enum parameters
+     *
+     */
+    @GET
+    
+    @Consumes({ "application/x-www-form-urlencoded" })
+    void testEnumParameters(@HeaderParam("enum_header_string_array")  List<String> enumHeaderStringArray, @HeaderParam("enum_header_string")  String enumHeaderString, @QueryParam("enum_query_string_array") List<String> enumQueryStringArray, @QueryParam("enum_query_string") @DefaultValue("-efg") String enumQueryString, @QueryParam("enum_query_integer") Integer enumQueryInteger, @QueryParam("enum_query_double") Double enumQueryDouble, @QueryParam("enum_query_model_array") List<EnumClass> enumQueryModelArray, @Multipart(value = "enum_form_string_array", required = false)  List<String> enumFormStringArray, @Multipart(value = "enum_form_string", required = false)  String enumFormString) throws ApiException, ProcessingException;
+
+    /**
+     * Fake endpoint to test group parameters (optional)
+     *
+     * Fake endpoint to test group parameters (optional)
+     *
+     */
+    @DELETE
+    
+    void testGroupParameters(@QueryParam("required_string_group") Integer requiredStringGroup, @HeaderParam("required_boolean_group")  Boolean requiredBooleanGroup, @QueryParam("required_int64_group") Long requiredInt64Group, @QueryParam("string_group") Integer stringGroup, @HeaderParam("boolean_group")  Boolean booleanGroup, @QueryParam("int64_group") Long int64Group) throws ApiException, ProcessingException;
+
+    /**
+     * test inline additionalProperties
+     *
+     * 
+     *
+     */
+    @POST
+    @Path("/inline-additionalProperties")
+    @Consumes({ "application/json" })
+    void testInlineAdditionalProperties(Map<String, String> requestBody) throws ApiException, ProcessingException;
+
+    /**
+     * test inline free-form additionalProperties
+     *
+     * 
+     *
+     */
+    @POST
+    @Path("/inline-freeform-additionalProperties")
+    @Consumes({ "application/json" })
+    void testInlineFreeformAdditionalProperties(TestInlineFreeformAdditionalPropertiesRequest testInlineFreeformAdditionalPropertiesRequest) throws ApiException, ProcessingException;
+
+    /**
+     * test json serialization of form data
+     *
+     * 
+     *
+     */
+    @GET
+    @Path("/jsonFormData")
+    @Consumes({ "application/x-www-form-urlencoded" })
+    void testJsonFormData(@Multipart(value = "param")  String param, @Multipart(value = "param2")  String param2) throws ApiException, ProcessingException;
+
+    /**
+     * test nullable parent property
+     *
+     * 
+     *
+     */
+    @POST
+    @Path("/nullable")
+    @Consumes({ "application/json" })
+    void testNullable(ChildWithNullable childWithNullable) throws ApiException, ProcessingException;
+
+    @PUT
+    @Path("/test-query-parameters")
+    void testQueryParameterCollectionFormat(@QueryParam("pipe") List<String> pipe, @QueryParam("ioutil") List<String> ioutil, @QueryParam("http") List<String> http, @QueryParam("url") List<String> url, @QueryParam("context") List<String> context, @QueryParam("allowEmpty") String allowEmpty, @QueryParam("language") Map<String, String> language) throws ApiException, ProcessingException;
+
+    /**
+     * test referenced string map
+     *
+     * 
+     *
+     */
+    @POST
+    @Path("/stringMap-reference")
+    @Consumes({ "application/json" })
+    void testStringMapReference(Map<String, String> requestBody) throws ApiException, ProcessingException;
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
new file mode 100644
index 00000000000..1db471b0365
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
@@ -0,0 +1,54 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.api;
+
+import org.openapitools.client.model.Client;
+
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import jakarta.ws.rs.*;
+import jakarta.ws.rs.core.Response;
+import jakarta.ws.rs.core.MediaType;
+import org.apache.cxf.jaxrs.ext.multipart.*;
+
+
+import org.eclipse.microprofile.rest.client.annotation.RegisterProvider;
+import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
+
+/**
+ * OpenAPI Petstore
+ *
+ * <p>This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ */
+
+@RegisterRestClient(configKey="petstore")
+@RegisterProvider(ApiExceptionMapper.class)
+@Path("/fake_classname_test")
+public interface FakeClassnameTags123Api  {
+
+    /**
+     * To test class name in snake case
+     *
+     * To test class name in snake case
+     *
+     */
+    @PATCH
+    
+    @Consumes({ "application/json" })
+    @Produces({ "application/json" })
+    Client testClassname(Client client) throws ApiException, ProcessingException;
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/PetApi.java
index d353688861c..224b962916e 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/PetApi.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -15,6 +15,7 @@ package org.openapitools.client.api;
 import java.io.File;
 import org.openapitools.client.model.ModelApiResponse;
 import org.openapitools.client.model.Pet;
+import java.util.Set;
 
 import java.io.InputStream;
 import java.io.OutputStream;
@@ -33,13 +34,13 @@ import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
 /**
  * OpenAPI Petstore
  *
- * <p>This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * <p>This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  */
 
 @RegisterRestClient(configKey="petstore")
 @RegisterProvider(ApiExceptionMapper.class)
-@Path("/pet")
+@Path("")
 public interface PetApi  {
 
     /**
@@ -49,10 +50,9 @@ public interface PetApi  {
      *
      */
     @POST
-    
+    @Path("/pet")
     @Consumes({ "application/json", "application/xml" })
-    @Produces({ "application/xml", "application/json" })
-    Pet addPet(Pet pet) throws ApiException, ProcessingException;
+    void addPet(Pet pet) throws ApiException, ProcessingException;
 
     /**
      * Deletes a pet
@@ -61,7 +61,7 @@ public interface PetApi  {
      *
      */
     @DELETE
-    @Path("/{petId}")
+    @Path("/pet/{petId}")
     void deletePet(@PathParam("petId") Long petId, @HeaderParam("api_key")  String apiKey) throws ApiException, ProcessingException;
 
     /**
@@ -71,7 +71,7 @@ public interface PetApi  {
      *
      */
     @GET
-    @Path("/findByStatus")
+    @Path("/pet/findByStatus")
     @Produces({ "application/xml", "application/json" })
     List<Pet> findPetsByStatus(@QueryParam("status") List<String> status) throws ApiException, ProcessingException;
 
@@ -84,9 +84,9 @@ public interface PetApi  {
      */
     @Deprecated
     @GET
-    @Path("/findByTags")
+    @Path("/pet/findByTags")
     @Produces({ "application/xml", "application/json" })
-    List<Pet> findPetsByTags(@QueryParam("tags") List<String> tags) throws ApiException, ProcessingException;
+    Set<Pet> findPetsByTags(@QueryParam("tags") Set<String> tags) throws ApiException, ProcessingException;
 
     /**
      * Find pet by ID
@@ -95,7 +95,7 @@ public interface PetApi  {
      *
      */
     @GET
-    @Path("/{petId}")
+    @Path("/pet/{petId}")
     @Produces({ "application/xml", "application/json" })
     Pet getPetById(@PathParam("petId") Long petId) throws ApiException, ProcessingException;
 
@@ -106,10 +106,9 @@ public interface PetApi  {
      *
      */
     @PUT
-    
+    @Path("/pet")
     @Consumes({ "application/json", "application/xml" })
-    @Produces({ "application/xml", "application/json" })
-    Pet updatePet(Pet pet) throws ApiException, ProcessingException;
+    void updatePet(Pet pet) throws ApiException, ProcessingException;
 
     /**
      * Updates a pet in the store with form data
@@ -118,7 +117,7 @@ public interface PetApi  {
      *
      */
     @POST
-    @Path("/{petId}")
+    @Path("/pet/{petId}")
     @Consumes({ "application/x-www-form-urlencoded" })
     void updatePetWithForm(@PathParam("petId") Long petId, @Multipart(value = "name", required = false)  String name, @Multipart(value = "status", required = false)  String status) throws ApiException, ProcessingException;
 
@@ -129,8 +128,20 @@ public interface PetApi  {
      *
      */
     @POST
-    @Path("/{petId}/uploadImage")
+    @Path("/pet/{petId}/uploadImage")
     @Consumes({ "multipart/form-data" })
     @Produces({ "application/json" })
     ModelApiResponse uploadFile(@PathParam("petId") Long petId, @Multipart(value = "additionalMetadata", required = false)  String additionalMetadata,  @Multipart(value = "file" , required = false) Attachment _fileDetail) throws ApiException, ProcessingException;
+
+    /**
+     * uploads an image (required)
+     *
+     * 
+     *
+     */
+    @POST
+    @Path("/fake/{petId}/uploadImageWithRequiredFile")
+    @Consumes({ "multipart/form-data" })
+    @Produces({ "application/json" })
+    ModelApiResponse uploadFileWithRequiredFile(@PathParam("petId") Long petId,  @Multipart(value = "requiredFile" ) Attachment requiredFileDetail, @Multipart(value = "additionalMetadata", required = false)  String additionalMetadata) throws ApiException, ProcessingException;
 }
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/StoreApi.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/StoreApi.java
index cd94c5b3bca..0fdf70e0825 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/StoreApi.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/StoreApi.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -31,7 +31,7 @@ import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
 /**
  * OpenAPI Petstore
  *
- * <p>This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * <p>This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  */
 
@@ -47,8 +47,8 @@ public interface StoreApi  {
      *
      */
     @DELETE
-    @Path("/order/{orderId}")
-    void deleteOrder(@PathParam("orderId") String orderId) throws ApiException, ProcessingException;
+    @Path("/order/{order_id}")
+    void deleteOrder(@PathParam("order_id") String orderId) throws ApiException, ProcessingException;
 
     /**
      * Returns pet inventories by status
@@ -68,9 +68,9 @@ public interface StoreApi  {
      *
      */
     @GET
-    @Path("/order/{orderId}")
+    @Path("/order/{order_id}")
     @Produces({ "application/xml", "application/json" })
-    Order getOrderById(@PathParam("orderId") Long orderId) throws ApiException, ProcessingException;
+    Order getOrderById(@PathParam("order_id") Long orderId) throws ApiException, ProcessingException;
 
     /**
      * Place an order for a pet
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/UserApi.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/UserApi.java
index 7f8c13c9e08..515c42ae977 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/UserApi.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/api/UserApi.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -32,7 +32,7 @@ import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
 /**
  * OpenAPI Petstore
  *
- * <p>This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * <p>This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  */
 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/AdditionalPropertiesClass.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/AdditionalPropertiesClass.java
new file mode 100644
index 00000000000..14f3cad2e83
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/AdditionalPropertiesClass.java
@@ -0,0 +1,142 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Map;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+public class AdditionalPropertiesClass  {
+  
+  @JsonbProperty("map_property")
+  private Map<String, String> mapProperty = null;
+
+  @JsonbProperty("map_of_map_property")
+  private Map<String, Map<String, String>> mapOfMapProperty = null;
+
+  /**
+   * Get mapProperty
+   * @return mapProperty
+   **/
+  public Map<String, String> getMapProperty() {
+    return mapProperty;
+  }
+
+  /**
+   * Set mapProperty
+   */
+  public void setMapProperty(Map<String, String> mapProperty) {
+    this.mapProperty = mapProperty;
+  }
+
+  public AdditionalPropertiesClass mapProperty(Map<String, String> mapProperty) {
+    this.mapProperty = mapProperty;
+    return this;
+  }
+
+  public AdditionalPropertiesClass putMapPropertyItem(String key, String mapPropertyItem) {
+    if (this.mapProperty == null) {
+      this.mapProperty = new HashMap<>();
+    }
+    this.mapProperty.put(key, mapPropertyItem);
+    return this;
+  }
+
+  /**
+   * Get mapOfMapProperty
+   * @return mapOfMapProperty
+   **/
+  public Map<String, Map<String, String>> getMapOfMapProperty() {
+    return mapOfMapProperty;
+  }
+
+  /**
+   * Set mapOfMapProperty
+   */
+  public void setMapOfMapProperty(Map<String, Map<String, String>> mapOfMapProperty) {
+    this.mapOfMapProperty = mapOfMapProperty;
+  }
+
+  public AdditionalPropertiesClass mapOfMapProperty(Map<String, Map<String, String>> mapOfMapProperty) {
+    this.mapOfMapProperty = mapOfMapProperty;
+    return this;
+  }
+
+  public AdditionalPropertiesClass putMapOfMapPropertyItem(String key, Map<String, String> mapOfMapPropertyItem) {
+    if (this.mapOfMapProperty == null) {
+      this.mapOfMapProperty = new HashMap<>();
+    }
+    this.mapOfMapProperty.put(key, mapOfMapPropertyItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    AdditionalPropertiesClass additionalPropertiesClass = (AdditionalPropertiesClass) o;
+    return Objects.equals(this.mapProperty, additionalPropertiesClass.mapProperty) &&
+        Objects.equals(this.mapOfMapProperty, additionalPropertiesClass.mapOfMapProperty);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(mapProperty, mapOfMapProperty);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class AdditionalPropertiesClass {\n");
+    
+    sb.append("    mapProperty: ").append(toIndentedString(mapProperty)).append("\n");
+    sb.append("    mapOfMapProperty: ").append(toIndentedString(mapOfMapProperty)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/AllOfWithSingleRef.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/AllOfWithSingleRef.java
new file mode 100644
index 00000000000..bc4870ebb9d
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/AllOfWithSingleRef.java
@@ -0,0 +1,125 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import org.openapitools.client.model.SingleRefType;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+public class AllOfWithSingleRef  {
+  
+  @JsonbProperty("username")
+  private String username;
+
+  @JsonbProperty("SingleRefType")
+  private SingleRefType singleRefType;
+
+  /**
+   * Get username
+   * @return username
+   **/
+  public String getUsername() {
+    return username;
+  }
+
+  /**
+   * Set username
+   */
+  public void setUsername(String username) {
+    this.username = username;
+  }
+
+  public AllOfWithSingleRef username(String username) {
+    this.username = username;
+    return this;
+  }
+
+  /**
+   * Get singleRefType
+   * @return singleRefType
+   **/
+  public SingleRefType getSingleRefType() {
+    return singleRefType;
+  }
+
+  /**
+   * Set singleRefType
+   */
+  public void setSingleRefType(SingleRefType singleRefType) {
+    this.singleRefType = singleRefType;
+  }
+
+  public AllOfWithSingleRef singleRefType(SingleRefType singleRefType) {
+    this.singleRefType = singleRefType;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    AllOfWithSingleRef allOfWithSingleRef = (AllOfWithSingleRef) o;
+    return Objects.equals(this.username, allOfWithSingleRef.username) &&
+        Objects.equals(this.singleRefType, allOfWithSingleRef.singleRefType);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(username, singleRefType);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class AllOfWithSingleRef {\n");
+    
+    sb.append("    username: ").append(toIndentedString(username)).append("\n");
+    sb.append("    singleRefType: ").append(toIndentedString(singleRefType)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Animal.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Animal.java
new file mode 100644
index 00000000000..b35b06484d0
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Animal.java
@@ -0,0 +1,127 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+@JsonbTypeInfo(key = "className", value = {
+  @JsonbSubtype(alias = "CAT", type = Cat.class),
+  @JsonbSubtype(alias = "DOG", type = Dog.class),
+})
+public class Animal  {
+  
+  @JsonbTransient
+  private String className;
+
+  @JsonbProperty("color")
+  private String color = "red";
+
+  /**
+   * Get className
+   * @return className
+   **/
+  public String getClassName() {
+    return className;
+  }
+
+  /**
+   * Set className
+   */
+  public void setClassName(String className) {
+    this.className = className;
+  }
+
+  public Animal className(String className) {
+    this.className = className;
+    return this;
+  }
+
+  /**
+   * Get color
+   * @return color
+   **/
+  public String getColor() {
+    return color;
+  }
+
+  /**
+   * Set color
+   */
+  public void setColor(String color) {
+    this.color = color;
+  }
+
+  public Animal color(String color) {
+    this.color = color;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Animal animal = (Animal) o;
+    return Objects.equals(this.className, animal.className) &&
+        Objects.equals(this.color, animal.color);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(className, color);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Animal {\n");
+    
+    sb.append("    className: ").append(toIndentedString(className)).append("\n");
+    sb.append("    color: ").append(toIndentedString(color)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnly.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnly.java
new file mode 100644
index 00000000000..b9f65c9f2a1
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnly.java
@@ -0,0 +1,111 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+public class ArrayOfArrayOfNumberOnly  {
+  
+  @JsonbProperty("ArrayArrayNumber")
+  private List<List<BigDecimal>> arrayArrayNumber = null;
+
+  /**
+   * Get arrayArrayNumber
+   * @return arrayArrayNumber
+   **/
+  public List<List<BigDecimal>> getArrayArrayNumber() {
+    return arrayArrayNumber;
+  }
+
+  /**
+   * Set arrayArrayNumber
+   */
+  public void setArrayArrayNumber(List<List<BigDecimal>> arrayArrayNumber) {
+    this.arrayArrayNumber = arrayArrayNumber;
+  }
+
+  public ArrayOfArrayOfNumberOnly arrayArrayNumber(List<List<BigDecimal>> arrayArrayNumber) {
+    this.arrayArrayNumber = arrayArrayNumber;
+    return this;
+  }
+
+  public ArrayOfArrayOfNumberOnly addArrayArrayNumberItem(List<BigDecimal> arrayArrayNumberItem) {
+    if (this.arrayArrayNumber == null) {
+      this.arrayArrayNumber = new ArrayList<>();
+    }
+    this.arrayArrayNumber.add(arrayArrayNumberItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ArrayOfArrayOfNumberOnly arrayOfArrayOfNumberOnly = (ArrayOfArrayOfNumberOnly) o;
+    return Objects.equals(this.arrayArrayNumber, arrayOfArrayOfNumberOnly.arrayArrayNumber);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(arrayArrayNumber);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ArrayOfArrayOfNumberOnly {\n");
+    
+    sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ArrayOfNumberOnly.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ArrayOfNumberOnly.java
new file mode 100644
index 00000000000..cfada48cfc9
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ArrayOfNumberOnly.java
@@ -0,0 +1,111 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+public class ArrayOfNumberOnly  {
+  
+  @JsonbProperty("ArrayNumber")
+  private List<BigDecimal> arrayNumber = null;
+
+  /**
+   * Get arrayNumber
+   * @return arrayNumber
+   **/
+  public List<BigDecimal> getArrayNumber() {
+    return arrayNumber;
+  }
+
+  /**
+   * Set arrayNumber
+   */
+  public void setArrayNumber(List<BigDecimal> arrayNumber) {
+    this.arrayNumber = arrayNumber;
+  }
+
+  public ArrayOfNumberOnly arrayNumber(List<BigDecimal> arrayNumber) {
+    this.arrayNumber = arrayNumber;
+    return this;
+  }
+
+  public ArrayOfNumberOnly addArrayNumberItem(BigDecimal arrayNumberItem) {
+    if (this.arrayNumber == null) {
+      this.arrayNumber = new ArrayList<>();
+    }
+    this.arrayNumber.add(arrayNumberItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ArrayOfNumberOnly arrayOfNumberOnly = (ArrayOfNumberOnly) o;
+    return Objects.equals(this.arrayNumber, arrayOfNumberOnly.arrayNumber);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(arrayNumber);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ArrayOfNumberOnly {\n");
+    
+    sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ArrayTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ArrayTest.java
new file mode 100644
index 00000000000..1b17f1643d7
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ArrayTest.java
@@ -0,0 +1,177 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.openapitools.client.model.ReadOnlyFirst;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+public class ArrayTest  {
+  
+  @JsonbProperty("array_of_string")
+  private List<String> arrayOfString = null;
+
+  @JsonbProperty("array_array_of_integer")
+  private List<List<Long>> arrayArrayOfInteger = null;
+
+  @JsonbProperty("array_array_of_model")
+  private List<List<ReadOnlyFirst>> arrayArrayOfModel = null;
+
+  /**
+   * Get arrayOfString
+   * @return arrayOfString
+   **/
+  public List<String> getArrayOfString() {
+    return arrayOfString;
+  }
+
+  /**
+   * Set arrayOfString
+   */
+  public void setArrayOfString(List<String> arrayOfString) {
+    this.arrayOfString = arrayOfString;
+  }
+
+  public ArrayTest arrayOfString(List<String> arrayOfString) {
+    this.arrayOfString = arrayOfString;
+    return this;
+  }
+
+  public ArrayTest addArrayOfStringItem(String arrayOfStringItem) {
+    if (this.arrayOfString == null) {
+      this.arrayOfString = new ArrayList<>();
+    }
+    this.arrayOfString.add(arrayOfStringItem);
+    return this;
+  }
+
+  /**
+   * Get arrayArrayOfInteger
+   * @return arrayArrayOfInteger
+   **/
+  public List<List<Long>> getArrayArrayOfInteger() {
+    return arrayArrayOfInteger;
+  }
+
+  /**
+   * Set arrayArrayOfInteger
+   */
+  public void setArrayArrayOfInteger(List<List<Long>> arrayArrayOfInteger) {
+    this.arrayArrayOfInteger = arrayArrayOfInteger;
+  }
+
+  public ArrayTest arrayArrayOfInteger(List<List<Long>> arrayArrayOfInteger) {
+    this.arrayArrayOfInteger = arrayArrayOfInteger;
+    return this;
+  }
+
+  public ArrayTest addArrayArrayOfIntegerItem(List<Long> arrayArrayOfIntegerItem) {
+    if (this.arrayArrayOfInteger == null) {
+      this.arrayArrayOfInteger = new ArrayList<>();
+    }
+    this.arrayArrayOfInteger.add(arrayArrayOfIntegerItem);
+    return this;
+  }
+
+  /**
+   * Get arrayArrayOfModel
+   * @return arrayArrayOfModel
+   **/
+  public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
+    return arrayArrayOfModel;
+  }
+
+  /**
+   * Set arrayArrayOfModel
+   */
+  public void setArrayArrayOfModel(List<List<ReadOnlyFirst>> arrayArrayOfModel) {
+    this.arrayArrayOfModel = arrayArrayOfModel;
+  }
+
+  public ArrayTest arrayArrayOfModel(List<List<ReadOnlyFirst>> arrayArrayOfModel) {
+    this.arrayArrayOfModel = arrayArrayOfModel;
+    return this;
+  }
+
+  public ArrayTest addArrayArrayOfModelItem(List<ReadOnlyFirst> arrayArrayOfModelItem) {
+    if (this.arrayArrayOfModel == null) {
+      this.arrayArrayOfModel = new ArrayList<>();
+    }
+    this.arrayArrayOfModel.add(arrayArrayOfModelItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ArrayTest arrayTest = (ArrayTest) o;
+    return Objects.equals(this.arrayOfString, arrayTest.arrayOfString) &&
+        Objects.equals(this.arrayArrayOfInteger, arrayTest.arrayArrayOfInteger) &&
+        Objects.equals(this.arrayArrayOfModel, arrayTest.arrayArrayOfModel);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(arrayOfString, arrayArrayOfInteger, arrayArrayOfModel);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ArrayTest {\n");
+    
+    sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
+    sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
+    sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Capitalization.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Capitalization.java
new file mode 100644
index 00000000000..abf9cf2243b
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Capitalization.java
@@ -0,0 +1,227 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+public class Capitalization  {
+  
+  @JsonbProperty("smallCamel")
+  private String smallCamel;
+
+  @JsonbProperty("CapitalCamel")
+  private String capitalCamel;
+
+  @JsonbProperty("small_Snake")
+  private String smallSnake;
+
+  @JsonbProperty("Capital_Snake")
+  private String capitalSnake;
+
+  @JsonbProperty("SCA_ETH_Flow_Points")
+  private String scAETHFlowPoints;
+
+ /**
+  * Name of the pet 
+  */
+  @JsonbProperty("ATT_NAME")
+  private String ATT_NAME;
+
+  /**
+   * Get smallCamel
+   * @return smallCamel
+   **/
+  public String getSmallCamel() {
+    return smallCamel;
+  }
+
+  /**
+   * Set smallCamel
+   */
+  public void setSmallCamel(String smallCamel) {
+    this.smallCamel = smallCamel;
+  }
+
+  public Capitalization smallCamel(String smallCamel) {
+    this.smallCamel = smallCamel;
+    return this;
+  }
+
+  /**
+   * Get capitalCamel
+   * @return capitalCamel
+   **/
+  public String getCapitalCamel() {
+    return capitalCamel;
+  }
+
+  /**
+   * Set capitalCamel
+   */
+  public void setCapitalCamel(String capitalCamel) {
+    this.capitalCamel = capitalCamel;
+  }
+
+  public Capitalization capitalCamel(String capitalCamel) {
+    this.capitalCamel = capitalCamel;
+    return this;
+  }
+
+  /**
+   * Get smallSnake
+   * @return smallSnake
+   **/
+  public String getSmallSnake() {
+    return smallSnake;
+  }
+
+  /**
+   * Set smallSnake
+   */
+  public void setSmallSnake(String smallSnake) {
+    this.smallSnake = smallSnake;
+  }
+
+  public Capitalization smallSnake(String smallSnake) {
+    this.smallSnake = smallSnake;
+    return this;
+  }
+
+  /**
+   * Get capitalSnake
+   * @return capitalSnake
+   **/
+  public String getCapitalSnake() {
+    return capitalSnake;
+  }
+
+  /**
+   * Set capitalSnake
+   */
+  public void setCapitalSnake(String capitalSnake) {
+    this.capitalSnake = capitalSnake;
+  }
+
+  public Capitalization capitalSnake(String capitalSnake) {
+    this.capitalSnake = capitalSnake;
+    return this;
+  }
+
+  /**
+   * Get scAETHFlowPoints
+   * @return scAETHFlowPoints
+   **/
+  public String getScAETHFlowPoints() {
+    return scAETHFlowPoints;
+  }
+
+  /**
+   * Set scAETHFlowPoints
+   */
+  public void setScAETHFlowPoints(String scAETHFlowPoints) {
+    this.scAETHFlowPoints = scAETHFlowPoints;
+  }
+
+  public Capitalization scAETHFlowPoints(String scAETHFlowPoints) {
+    this.scAETHFlowPoints = scAETHFlowPoints;
+    return this;
+  }
+
+  /**
+   * Name of the pet 
+   * @return ATT_NAME
+   **/
+  public String getATTNAME() {
+    return ATT_NAME;
+  }
+
+  /**
+   * Set ATT_NAME
+   */
+  public void setATTNAME(String ATT_NAME) {
+    this.ATT_NAME = ATT_NAME;
+  }
+
+  public Capitalization ATT_NAME(String ATT_NAME) {
+    this.ATT_NAME = ATT_NAME;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Capitalization capitalization = (Capitalization) o;
+    return Objects.equals(this.smallCamel, capitalization.smallCamel) &&
+        Objects.equals(this.capitalCamel, capitalization.capitalCamel) &&
+        Objects.equals(this.smallSnake, capitalization.smallSnake) &&
+        Objects.equals(this.capitalSnake, capitalization.capitalSnake) &&
+        Objects.equals(this.scAETHFlowPoints, capitalization.scAETHFlowPoints) &&
+        Objects.equals(this.ATT_NAME, capitalization.ATT_NAME);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(smallCamel, capitalCamel, smallSnake, capitalSnake, scAETHFlowPoints, ATT_NAME);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Capitalization {\n");
+    
+    sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
+    sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
+    sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
+    sb.append("    capitalSnake: ").append(toIndentedString(capitalSnake)).append("\n");
+    sb.append("    scAETHFlowPoints: ").append(toIndentedString(scAETHFlowPoints)).append("\n");
+    sb.append("    ATT_NAME: ").append(toIndentedString(ATT_NAME)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Cat.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Cat.java
new file mode 100644
index 00000000000..8544e1850fc
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Cat.java
@@ -0,0 +1,101 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import org.openapitools.client.model.Animal;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+@JsonbTypeInfo(key = "className")
+public class Cat extends Animal {
+  
+  @JsonbProperty("declawed")
+  private Boolean declawed;
+
+  /**
+   * Get declawed
+   * @return declawed
+   **/
+  public Boolean getDeclawed() {
+    return declawed;
+  }
+
+  /**
+   * Set declawed
+   */
+  public void setDeclawed(Boolean declawed) {
+    this.declawed = declawed;
+  }
+
+  public Cat declawed(Boolean declawed) {
+    this.declawed = declawed;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Cat cat = (Cat) o;
+    return Objects.equals(this.declawed, cat.declawed) &&
+        super.equals(o);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(declawed, super.hashCode());
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Cat {\n");
+    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+    sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Category.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Category.java
index d7d5dca2bc6..08a19fdd00f 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Category.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Category.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -24,10 +24,11 @@ import jakarta.json.bind.serializer.SerializationContext;
 import jakarta.json.stream.JsonGenerator;
 import jakarta.json.stream.JsonParser;
 import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
 
-/**
-  * A category for a pet
-  */
 
 public class Category  {
   
@@ -35,7 +36,7 @@ public class Category  {
   private Long id;
 
   @JsonbProperty("name")
-  private String name;
+  private String name = "default-name";
 
   /**
    * Get id
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ChildWithNullable.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ChildWithNullable.java
new file mode 100644
index 00000000000..0bf4b66fe46
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ChildWithNullable.java
@@ -0,0 +1,101 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import org.openapitools.client.model.ParentWithNullable;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+@JsonbTypeInfo(key = "type")
+public class ChildWithNullable extends ParentWithNullable {
+  
+  @JsonbProperty("otherProperty")
+  private String otherProperty;
+
+  /**
+   * Get otherProperty
+   * @return otherProperty
+   **/
+  public String getOtherProperty() {
+    return otherProperty;
+  }
+
+  /**
+   * Set otherProperty
+   */
+  public void setOtherProperty(String otherProperty) {
+    this.otherProperty = otherProperty;
+  }
+
+  public ChildWithNullable otherProperty(String otherProperty) {
+    this.otherProperty = otherProperty;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ChildWithNullable childWithNullable = (ChildWithNullable) o;
+    return Objects.equals(this.otherProperty, childWithNullable.otherProperty) &&
+        super.equals(o);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(otherProperty, super.hashCode());
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ChildWithNullable {\n");
+    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+    sb.append("    otherProperty: ").append(toIndentedString(otherProperty)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ClassModel.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ClassModel.java
new file mode 100644
index 00000000000..5ee047f4053
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ClassModel.java
@@ -0,0 +1,102 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+/**
+  * Model for testing model with \"_class\" property
+  */
+
+public class ClassModel  {
+  
+  @JsonbProperty("_class")
+  private String propertyClass;
+
+  /**
+   * Get propertyClass
+   * @return propertyClass
+   **/
+  public String getPropertyClass() {
+    return propertyClass;
+  }
+
+  /**
+   * Set propertyClass
+   */
+  public void setPropertyClass(String propertyClass) {
+    this.propertyClass = propertyClass;
+  }
+
+  public ClassModel propertyClass(String propertyClass) {
+    this.propertyClass = propertyClass;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ClassModel classModel = (ClassModel) o;
+    return Objects.equals(this.propertyClass, classModel.propertyClass);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(propertyClass);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ClassModel {\n");
+    
+    sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Client.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Client.java
new file mode 100644
index 00000000000..864f08d8eda
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Client.java
@@ -0,0 +1,99 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+public class Client  {
+  
+  @JsonbProperty("client")
+  private String client;
+
+  /**
+   * Get client
+   * @return client
+   **/
+  public String getClient() {
+    return client;
+  }
+
+  /**
+   * Set client
+   */
+  public void setClient(String client) {
+    this.client = client;
+  }
+
+  public Client client(String client) {
+    this.client = client;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Client client = (Client) o;
+    return Objects.equals(this.client, client.client);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(client);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Client {\n");
+    
+    sb.append("    client: ").append(toIndentedString(client)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/DeprecatedObject.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/DeprecatedObject.java
new file mode 100644
index 00000000000..aab14a4f44d
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/DeprecatedObject.java
@@ -0,0 +1,99 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+public class DeprecatedObject  {
+  
+  @JsonbProperty("name")
+  private String name;
+
+  /**
+   * Get name
+   * @return name
+   **/
+  public String getName() {
+    return name;
+  }
+
+  /**
+   * Set name
+   */
+  public void setName(String name) {
+    this.name = name;
+  }
+
+  public DeprecatedObject name(String name) {
+    this.name = name;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    DeprecatedObject deprecatedObject = (DeprecatedObject) o;
+    return Objects.equals(this.name, deprecatedObject.name);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(name);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class DeprecatedObject {\n");
+    
+    sb.append("    name: ").append(toIndentedString(name)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Dog.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Dog.java
new file mode 100644
index 00000000000..c477ed0159f
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Dog.java
@@ -0,0 +1,101 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import org.openapitools.client.model.Animal;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+@JsonbTypeInfo(key = "className")
+public class Dog extends Animal {
+  
+  @JsonbProperty("breed")
+  private String breed;
+
+  /**
+   * Get breed
+   * @return breed
+   **/
+  public String getBreed() {
+    return breed;
+  }
+
+  /**
+   * Set breed
+   */
+  public void setBreed(String breed) {
+    this.breed = breed;
+  }
+
+  public Dog breed(String breed) {
+    this.breed = breed;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Dog dog = (Dog) o;
+    return Objects.equals(this.breed, dog.breed) &&
+        super.equals(o);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(breed, super.hashCode());
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Dog {\n");
+    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+    sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/EnumArrays.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/EnumArrays.java
new file mode 100644
index 00000000000..2fffb41be6e
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/EnumArrays.java
@@ -0,0 +1,219 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+public class EnumArrays  {
+  
+  @JsonbTypeSerializer(JustSymbolEnum.Serializer.class)
+  @JsonbTypeDeserializer(JustSymbolEnum.Deserializer.class)
+  public enum JustSymbolEnum {
+
+    GREATER_THAN_OR_EQUAL_TO(String.valueOf(">=")), DOLLAR(String.valueOf("$"));
+
+
+    String value;
+
+    JustSymbolEnum (String v) {
+        value = v;
+    }
+
+    public String value() {
+        return value;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(value);
+    }
+
+    public static final class Deserializer implements JsonbDeserializer<JustSymbolEnum> {
+        @Override
+        public JustSymbolEnum deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+            for (JustSymbolEnum b : JustSymbolEnum.values()) {
+                if (String.valueOf(b.value).equals(parser.getString())) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + parser.getString() + "'");
+        }
+    }
+
+    public static final class Serializer implements JsonbSerializer<JustSymbolEnum> {
+        @Override
+        public void serialize(JustSymbolEnum obj, JsonGenerator generator, SerializationContext ctx) {
+            generator.write(obj.value);
+        }
+    }
+  }
+
+  @JsonbProperty("just_symbol")
+  private JustSymbolEnum justSymbol;
+
+  @JsonbTypeSerializer(ArrayEnumEnum.Serializer.class)
+  @JsonbTypeDeserializer(ArrayEnumEnum.Deserializer.class)
+  public enum ArrayEnumEnum {
+
+    FISH(String.valueOf("fish")), CRAB(String.valueOf("crab"));
+
+
+    String value;
+
+    ArrayEnumEnum (String v) {
+        value = v;
+    }
+
+    public String value() {
+        return value;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(value);
+    }
+
+    public static final class Deserializer implements JsonbDeserializer<ArrayEnumEnum> {
+        @Override
+        public ArrayEnumEnum deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+            for (ArrayEnumEnum b : ArrayEnumEnum.values()) {
+                if (String.valueOf(b.value).equals(parser.getString())) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + parser.getString() + "'");
+        }
+    }
+
+    public static final class Serializer implements JsonbSerializer<ArrayEnumEnum> {
+        @Override
+        public void serialize(ArrayEnumEnum obj, JsonGenerator generator, SerializationContext ctx) {
+            generator.write(obj.value);
+        }
+    }
+  }
+
+  @JsonbProperty("array_enum")
+  private List<ArrayEnumEnum> arrayEnum = null;
+
+  /**
+   * Get justSymbol
+   * @return justSymbol
+   **/
+  public JustSymbolEnum getJustSymbol() {
+    return justSymbol;
+  }
+
+  /**
+   * Set justSymbol
+   */
+  public void setJustSymbol(JustSymbolEnum justSymbol) {
+    this.justSymbol = justSymbol;
+  }
+
+  public EnumArrays justSymbol(JustSymbolEnum justSymbol) {
+    this.justSymbol = justSymbol;
+    return this;
+  }
+
+  /**
+   * Get arrayEnum
+   * @return arrayEnum
+   **/
+  public List<ArrayEnumEnum> getArrayEnum() {
+    return arrayEnum;
+  }
+
+  /**
+   * Set arrayEnum
+   */
+  public void setArrayEnum(List<ArrayEnumEnum> arrayEnum) {
+    this.arrayEnum = arrayEnum;
+  }
+
+  public EnumArrays arrayEnum(List<ArrayEnumEnum> arrayEnum) {
+    this.arrayEnum = arrayEnum;
+    return this;
+  }
+
+  public EnumArrays addArrayEnumItem(ArrayEnumEnum arrayEnumItem) {
+    if (this.arrayEnum == null) {
+      this.arrayEnum = new ArrayList<>();
+    }
+    this.arrayEnum.add(arrayEnumItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    EnumArrays enumArrays = (EnumArrays) o;
+    return Objects.equals(this.justSymbol, enumArrays.justSymbol) &&
+        Objects.equals(this.arrayEnum, enumArrays.arrayEnum);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(justSymbol, arrayEnum);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class EnumArrays {\n");
+    
+    sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
+    sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/EnumClass.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/EnumClass.java
new file mode 100644
index 00000000000..e6c6539427a
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/EnumClass.java
@@ -0,0 +1,80 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+/**
+ * Gets or Sets EnumClass
+ */
+@JsonbTypeSerializer(EnumClass.Serializer.class)
+@JsonbTypeDeserializer(EnumClass.Deserializer.class)
+public enum EnumClass {
+  
+  _ABC("_abc"),
+  
+  _EFG("-efg"),
+  
+  _XYZ_("(xyz)");
+
+  private String value;
+
+  EnumClass(String value) {
+    this.value = value;
+  }
+
+  @Override
+  public String toString() {
+    return String.valueOf(value);
+  }
+
+  public static final class Deserializer implements JsonbDeserializer<EnumClass> {
+    @Override
+    public EnumClass deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+      return fromValue(parser.getString());
+    }
+  }
+
+  public static final class Serializer implements JsonbSerializer<EnumClass> {
+    @Override
+    public void serialize(EnumClass obj, JsonGenerator generator, SerializationContext ctx) {
+      generator.write(obj.value);
+    }
+  }
+
+  public static EnumClass fromValue(String text) {
+    for (EnumClass b : EnumClass.values()) {
+      if (String.valueOf(b.value).equals(text)) {
+        return b;
+      }
+    }
+    throw new IllegalArgumentException("Unexpected value '" + text + "'");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/EnumTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/EnumTest.java
new file mode 100644
index 00000000000..90a4b515048
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/EnumTest.java
@@ -0,0 +1,446 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import org.openapitools.client.model.OuterEnum;
+import org.openapitools.client.model.OuterEnumDefaultValue;
+import org.openapitools.client.model.OuterEnumInteger;
+import org.openapitools.client.model.OuterEnumIntegerDefaultValue;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+public class EnumTest  {
+  
+  @JsonbTypeSerializer(EnumStringEnum.Serializer.class)
+  @JsonbTypeDeserializer(EnumStringEnum.Deserializer.class)
+  public enum EnumStringEnum {
+
+    UPPER(String.valueOf("UPPER")), LOWER(String.valueOf("lower")), EMPTY(String.valueOf(""));
+
+
+    String value;
+
+    EnumStringEnum (String v) {
+        value = v;
+    }
+
+    public String value() {
+        return value;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(value);
+    }
+
+    public static final class Deserializer implements JsonbDeserializer<EnumStringEnum> {
+        @Override
+        public EnumStringEnum deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+            for (EnumStringEnum b : EnumStringEnum.values()) {
+                if (String.valueOf(b.value).equals(parser.getString())) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + parser.getString() + "'");
+        }
+    }
+
+    public static final class Serializer implements JsonbSerializer<EnumStringEnum> {
+        @Override
+        public void serialize(EnumStringEnum obj, JsonGenerator generator, SerializationContext ctx) {
+            generator.write(obj.value);
+        }
+    }
+  }
+
+  @JsonbProperty("enum_string")
+  private EnumStringEnum enumString;
+
+  @JsonbTypeSerializer(EnumStringRequiredEnum.Serializer.class)
+  @JsonbTypeDeserializer(EnumStringRequiredEnum.Deserializer.class)
+  public enum EnumStringRequiredEnum {
+
+    UPPER(String.valueOf("UPPER")), LOWER(String.valueOf("lower")), EMPTY(String.valueOf(""));
+
+
+    String value;
+
+    EnumStringRequiredEnum (String v) {
+        value = v;
+    }
+
+    public String value() {
+        return value;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(value);
+    }
+
+    public static final class Deserializer implements JsonbDeserializer<EnumStringRequiredEnum> {
+        @Override
+        public EnumStringRequiredEnum deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+            for (EnumStringRequiredEnum b : EnumStringRequiredEnum.values()) {
+                if (String.valueOf(b.value).equals(parser.getString())) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + parser.getString() + "'");
+        }
+    }
+
+    public static final class Serializer implements JsonbSerializer<EnumStringRequiredEnum> {
+        @Override
+        public void serialize(EnumStringRequiredEnum obj, JsonGenerator generator, SerializationContext ctx) {
+            generator.write(obj.value);
+        }
+    }
+  }
+
+  @JsonbProperty("enum_string_required")
+  private EnumStringRequiredEnum enumStringRequired;
+
+  @JsonbTypeSerializer(EnumIntegerEnum.Serializer.class)
+  @JsonbTypeDeserializer(EnumIntegerEnum.Deserializer.class)
+  public enum EnumIntegerEnum {
+
+    NUMBER_1(Integer.valueOf(1)), NUMBER_MINUS_1(Integer.valueOf(-1));
+
+
+    Integer value;
+
+    EnumIntegerEnum (Integer v) {
+        value = v;
+    }
+
+    public Integer value() {
+        return value;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(value);
+    }
+
+    public static final class Deserializer implements JsonbDeserializer<EnumIntegerEnum> {
+        @Override
+        public EnumIntegerEnum deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+            for (EnumIntegerEnum b : EnumIntegerEnum.values()) {
+                if (String.valueOf(b.value).equals(parser.getString())) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + parser.getString() + "'");
+        }
+    }
+
+    public static final class Serializer implements JsonbSerializer<EnumIntegerEnum> {
+        @Override
+        public void serialize(EnumIntegerEnum obj, JsonGenerator generator, SerializationContext ctx) {
+            generator.write(obj.value);
+        }
+    }
+  }
+
+  @JsonbProperty("enum_integer")
+  private EnumIntegerEnum enumInteger;
+
+  @JsonbTypeSerializer(EnumNumberEnum.Serializer.class)
+  @JsonbTypeDeserializer(EnumNumberEnum.Deserializer.class)
+  public enum EnumNumberEnum {
+
+    NUMBER_1_DOT_1(Double.valueOf(1.1)), NUMBER_MINUS_1_DOT_2(Double.valueOf(-1.2));
+
+
+    Double value;
+
+    EnumNumberEnum (Double v) {
+        value = v;
+    }
+
+    public Double value() {
+        return value;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(value);
+    }
+
+    public static final class Deserializer implements JsonbDeserializer<EnumNumberEnum> {
+        @Override
+        public EnumNumberEnum deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+            for (EnumNumberEnum b : EnumNumberEnum.values()) {
+                if (String.valueOf(b.value).equals(parser.getString())) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + parser.getString() + "'");
+        }
+    }
+
+    public static final class Serializer implements JsonbSerializer<EnumNumberEnum> {
+        @Override
+        public void serialize(EnumNumberEnum obj, JsonGenerator generator, SerializationContext ctx) {
+            generator.write(obj.value);
+        }
+    }
+  }
+
+  @JsonbProperty("enum_number")
+  private EnumNumberEnum enumNumber;
+
+  @JsonbProperty("outerEnum")
+  private OuterEnum outerEnum;
+
+  @JsonbProperty("outerEnumInteger")
+  private OuterEnumInteger outerEnumInteger;
+
+  @JsonbProperty("outerEnumDefaultValue")
+  private OuterEnumDefaultValue outerEnumDefaultValue = OuterEnumDefaultValue.PLACED;
+
+  @JsonbProperty("outerEnumIntegerDefaultValue")
+  private OuterEnumIntegerDefaultValue outerEnumIntegerDefaultValue = OuterEnumIntegerDefaultValue.NUMBER_0;
+
+  /**
+   * Get enumString
+   * @return enumString
+   **/
+  public EnumStringEnum getEnumString() {
+    return enumString;
+  }
+
+  /**
+   * Set enumString
+   */
+  public void setEnumString(EnumStringEnum enumString) {
+    this.enumString = enumString;
+  }
+
+  public EnumTest enumString(EnumStringEnum enumString) {
+    this.enumString = enumString;
+    return this;
+  }
+
+  /**
+   * Get enumStringRequired
+   * @return enumStringRequired
+   **/
+  public EnumStringRequiredEnum getEnumStringRequired() {
+    return enumStringRequired;
+  }
+
+  /**
+   * Set enumStringRequired
+   */
+  public void setEnumStringRequired(EnumStringRequiredEnum enumStringRequired) {
+    this.enumStringRequired = enumStringRequired;
+  }
+
+  public EnumTest enumStringRequired(EnumStringRequiredEnum enumStringRequired) {
+    this.enumStringRequired = enumStringRequired;
+    return this;
+  }
+
+  /**
+   * Get enumInteger
+   * @return enumInteger
+   **/
+  public EnumIntegerEnum getEnumInteger() {
+    return enumInteger;
+  }
+
+  /**
+   * Set enumInteger
+   */
+  public void setEnumInteger(EnumIntegerEnum enumInteger) {
+    this.enumInteger = enumInteger;
+  }
+
+  public EnumTest enumInteger(EnumIntegerEnum enumInteger) {
+    this.enumInteger = enumInteger;
+    return this;
+  }
+
+  /**
+   * Get enumNumber
+   * @return enumNumber
+   **/
+  public EnumNumberEnum getEnumNumber() {
+    return enumNumber;
+  }
+
+  /**
+   * Set enumNumber
+   */
+  public void setEnumNumber(EnumNumberEnum enumNumber) {
+    this.enumNumber = enumNumber;
+  }
+
+  public EnumTest enumNumber(EnumNumberEnum enumNumber) {
+    this.enumNumber = enumNumber;
+    return this;
+  }
+
+  /**
+   * Get outerEnum
+   * @return outerEnum
+   **/
+  public OuterEnum getOuterEnum() {
+    return outerEnum;
+  }
+
+  /**
+   * Set outerEnum
+   */
+  public void setOuterEnum(OuterEnum outerEnum) {
+    this.outerEnum = outerEnum;
+  }
+
+  public EnumTest outerEnum(OuterEnum outerEnum) {
+    this.outerEnum = outerEnum;
+    return this;
+  }
+
+  /**
+   * Get outerEnumInteger
+   * @return outerEnumInteger
+   **/
+  public OuterEnumInteger getOuterEnumInteger() {
+    return outerEnumInteger;
+  }
+
+  /**
+   * Set outerEnumInteger
+   */
+  public void setOuterEnumInteger(OuterEnumInteger outerEnumInteger) {
+    this.outerEnumInteger = outerEnumInteger;
+  }
+
+  public EnumTest outerEnumInteger(OuterEnumInteger outerEnumInteger) {
+    this.outerEnumInteger = outerEnumInteger;
+    return this;
+  }
+
+  /**
+   * Get outerEnumDefaultValue
+   * @return outerEnumDefaultValue
+   **/
+  public OuterEnumDefaultValue getOuterEnumDefaultValue() {
+    return outerEnumDefaultValue;
+  }
+
+  /**
+   * Set outerEnumDefaultValue
+   */
+  public void setOuterEnumDefaultValue(OuterEnumDefaultValue outerEnumDefaultValue) {
+    this.outerEnumDefaultValue = outerEnumDefaultValue;
+  }
+
+  public EnumTest outerEnumDefaultValue(OuterEnumDefaultValue outerEnumDefaultValue) {
+    this.outerEnumDefaultValue = outerEnumDefaultValue;
+    return this;
+  }
+
+  /**
+   * Get outerEnumIntegerDefaultValue
+   * @return outerEnumIntegerDefaultValue
+   **/
+  public OuterEnumIntegerDefaultValue getOuterEnumIntegerDefaultValue() {
+    return outerEnumIntegerDefaultValue;
+  }
+
+  /**
+   * Set outerEnumIntegerDefaultValue
+   */
+  public void setOuterEnumIntegerDefaultValue(OuterEnumIntegerDefaultValue outerEnumIntegerDefaultValue) {
+    this.outerEnumIntegerDefaultValue = outerEnumIntegerDefaultValue;
+  }
+
+  public EnumTest outerEnumIntegerDefaultValue(OuterEnumIntegerDefaultValue outerEnumIntegerDefaultValue) {
+    this.outerEnumIntegerDefaultValue = outerEnumIntegerDefaultValue;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    EnumTest enumTest = (EnumTest) o;
+    return Objects.equals(this.enumString, enumTest.enumString) &&
+        Objects.equals(this.enumStringRequired, enumTest.enumStringRequired) &&
+        Objects.equals(this.enumInteger, enumTest.enumInteger) &&
+        Objects.equals(this.enumNumber, enumTest.enumNumber) &&
+        Objects.equals(this.outerEnum, enumTest.outerEnum) &&
+        Objects.equals(this.outerEnumInteger, enumTest.outerEnumInteger) &&
+        Objects.equals(this.outerEnumDefaultValue, enumTest.outerEnumDefaultValue) &&
+        Objects.equals(this.outerEnumIntegerDefaultValue, enumTest.outerEnumIntegerDefaultValue);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(enumString, enumStringRequired, enumInteger, enumNumber, outerEnum, outerEnumInteger, outerEnumDefaultValue, outerEnumIntegerDefaultValue);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class EnumTest {\n");
+    
+    sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
+    sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
+    sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
+    sb.append("    enumNumber: ").append(toIndentedString(enumNumber)).append("\n");
+    sb.append("    outerEnum: ").append(toIndentedString(outerEnum)).append("\n");
+    sb.append("    outerEnumInteger: ").append(toIndentedString(outerEnumInteger)).append("\n");
+    sb.append("    outerEnumDefaultValue: ").append(toIndentedString(outerEnumDefaultValue)).append("\n");
+    sb.append("    outerEnumIntegerDefaultValue: ").append(toIndentedString(outerEnumIntegerDefaultValue)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/FakeBigDecimalMap200Response.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/FakeBigDecimalMap200Response.java
new file mode 100644
index 00000000000..e7cb4ce5739
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/FakeBigDecimalMap200Response.java
@@ -0,0 +1,135 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.math.BigDecimal;
+import java.util.HashMap;
+import java.util.Map;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+public class FakeBigDecimalMap200Response  {
+  
+  @JsonbProperty("someId")
+  private BigDecimal someId;
+
+  @JsonbProperty("someMap")
+  private Map<String, BigDecimal> someMap = null;
+
+  /**
+   * Get someId
+   * @return someId
+   **/
+  public BigDecimal getSomeId() {
+    return someId;
+  }
+
+  /**
+   * Set someId
+   */
+  public void setSomeId(BigDecimal someId) {
+    this.someId = someId;
+  }
+
+  public FakeBigDecimalMap200Response someId(BigDecimal someId) {
+    this.someId = someId;
+    return this;
+  }
+
+  /**
+   * Get someMap
+   * @return someMap
+   **/
+  public Map<String, BigDecimal> getSomeMap() {
+    return someMap;
+  }
+
+  /**
+   * Set someMap
+   */
+  public void setSomeMap(Map<String, BigDecimal> someMap) {
+    this.someMap = someMap;
+  }
+
+  public FakeBigDecimalMap200Response someMap(Map<String, BigDecimal> someMap) {
+    this.someMap = someMap;
+    return this;
+  }
+
+  public FakeBigDecimalMap200Response putSomeMapItem(String key, BigDecimal someMapItem) {
+    if (this.someMap == null) {
+      this.someMap = new HashMap<>();
+    }
+    this.someMap.put(key, someMapItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    FakeBigDecimalMap200Response fakeBigDecimalMap200Response = (FakeBigDecimalMap200Response) o;
+    return Objects.equals(this.someId, fakeBigDecimalMap200Response.someId) &&
+        Objects.equals(this.someMap, fakeBigDecimalMap200Response.someMap);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(someId, someMap);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class FakeBigDecimalMap200Response {\n");
+    
+    sb.append("    someId: ").append(toIndentedString(someId)).append("\n");
+    sb.append("    someMap: ").append(toIndentedString(someMap)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
new file mode 100644
index 00000000000..0c125fffb38
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
@@ -0,0 +1,136 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.openapitools.client.model.ModelFile;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+public class FileSchemaTestClass  {
+  
+  @JsonbProperty("file")
+  private ModelFile _file;
+
+  @JsonbProperty("files")
+  private List<ModelFile> files = null;
+
+  /**
+   * Get _file
+   * @return _file
+   **/
+  public ModelFile getFile() {
+    return _file;
+  }
+
+  /**
+   * Set _file
+   */
+  public void setFile(ModelFile _file) {
+    this._file = _file;
+  }
+
+  public FileSchemaTestClass _file(ModelFile _file) {
+    this._file = _file;
+    return this;
+  }
+
+  /**
+   * Get files
+   * @return files
+   **/
+  public List<ModelFile> getFiles() {
+    return files;
+  }
+
+  /**
+   * Set files
+   */
+  public void setFiles(List<ModelFile> files) {
+    this.files = files;
+  }
+
+  public FileSchemaTestClass files(List<ModelFile> files) {
+    this.files = files;
+    return this;
+  }
+
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
+    if (this.files == null) {
+      this.files = new ArrayList<>();
+    }
+    this.files.add(filesItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
+        Objects.equals(this.files, fileSchemaTestClass.files);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_file, files);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class FileSchemaTestClass {\n");
+    
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
+    sb.append("    files: ").append(toIndentedString(files)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Foo.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Foo.java
new file mode 100644
index 00000000000..993bbd2a6f5
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Foo.java
@@ -0,0 +1,99 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+public class Foo  {
+  
+  @JsonbProperty("bar")
+  private String bar = "bar";
+
+  /**
+   * Get bar
+   * @return bar
+   **/
+  public String getBar() {
+    return bar;
+  }
+
+  /**
+   * Set bar
+   */
+  public void setBar(String bar) {
+    this.bar = bar;
+  }
+
+  public Foo bar(String bar) {
+    this.bar = bar;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Foo foo = (Foo) o;
+    return Objects.equals(this.bar, foo.bar);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(bar);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Foo {\n");
+    
+    sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/FooGetDefaultResponse.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/FooGetDefaultResponse.java
new file mode 100644
index 00000000000..0f1b9946bf5
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/FooGetDefaultResponse.java
@@ -0,0 +1,100 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import org.openapitools.client.model.Foo;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+public class FooGetDefaultResponse  {
+  
+  @JsonbProperty("string")
+  private Foo string;
+
+  /**
+   * Get string
+   * @return string
+   **/
+  public Foo getString() {
+    return string;
+  }
+
+  /**
+   * Set string
+   */
+  public void setString(Foo string) {
+    this.string = string;
+  }
+
+  public FooGetDefaultResponse string(Foo string) {
+    this.string = string;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    FooGetDefaultResponse fooGetDefaultResponse = (FooGetDefaultResponse) o;
+    return Objects.equals(this.string, fooGetDefaultResponse.string);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(string);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class FooGetDefaultResponse {\n");
+    
+    sb.append("    string: ").append(toIndentedString(string)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/FormatTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/FormatTest.java
new file mode 100644
index 00000000000..0a28a8ffb14
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/FormatTest.java
@@ -0,0 +1,494 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.io.File;
+import java.math.BigDecimal;
+import java.util.Date;
+import java.util.UUID;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+public class FormatTest  {
+  
+  @JsonbProperty("integer")
+  private Integer integer;
+
+  @JsonbProperty("int32")
+  private Integer int32;
+
+  @JsonbProperty("int64")
+  private Long int64;
+
+  @JsonbProperty("number")
+  private BigDecimal number;
+
+  @JsonbProperty("float")
+  private Float _float;
+
+  @JsonbProperty("double")
+  private Double _double;
+
+  @JsonbProperty("decimal")
+  private BigDecimal decimal;
+
+  @JsonbProperty("string")
+  private String string;
+
+  @JsonbProperty("byte")
+  private byte[] _byte;
+
+  @JsonbProperty("binary")
+  private File binary;
+
+  @JsonbProperty("date")
+  private Date date;
+
+  @JsonbProperty("dateTime")
+  private Date dateTime;
+
+  @JsonbProperty("uuid")
+  private UUID uuid;
+
+  @JsonbProperty("password")
+  private String password;
+
+ /**
+  * A string that is a 10 digit number. Can have leading zeros.
+  */
+  @JsonbProperty("pattern_with_digits")
+  private String patternWithDigits;
+
+ /**
+  * A string starting with 'image_' (case insensitive) and one to three digits following i.e. Image_01.
+  */
+  @JsonbProperty("pattern_with_digits_and_delimiter")
+  private String patternWithDigitsAndDelimiter;
+
+  /**
+   * Get integer
+   * minimum: 10
+   * maximum: 100
+   * @return integer
+   **/
+  public Integer getInteger() {
+    return integer;
+  }
+
+  /**
+   * Set integer
+   */
+  public void setInteger(Integer integer) {
+    this.integer = integer;
+  }
+
+  public FormatTest integer(Integer integer) {
+    this.integer = integer;
+    return this;
+  }
+
+  /**
+   * Get int32
+   * minimum: 20
+   * maximum: 200
+   * @return int32
+   **/
+  public Integer getInt32() {
+    return int32;
+  }
+
+  /**
+   * Set int32
+   */
+  public void setInt32(Integer int32) {
+    this.int32 = int32;
+  }
+
+  public FormatTest int32(Integer int32) {
+    this.int32 = int32;
+    return this;
+  }
+
+  /**
+   * Get int64
+   * @return int64
+   **/
+  public Long getInt64() {
+    return int64;
+  }
+
+  /**
+   * Set int64
+   */
+  public void setInt64(Long int64) {
+    this.int64 = int64;
+  }
+
+  public FormatTest int64(Long int64) {
+    this.int64 = int64;
+    return this;
+  }
+
+  /**
+   * Get number
+   * minimum: 32.1
+   * maximum: 543.2
+   * @return number
+   **/
+  public BigDecimal getNumber() {
+    return number;
+  }
+
+  /**
+   * Set number
+   */
+  public void setNumber(BigDecimal number) {
+    this.number = number;
+  }
+
+  public FormatTest number(BigDecimal number) {
+    this.number = number;
+    return this;
+  }
+
+  /**
+   * Get _float
+   * minimum: 54.3
+   * maximum: 987.6
+   * @return _float
+   **/
+  public Float getFloat() {
+    return _float;
+  }
+
+  /**
+   * Set _float
+   */
+  public void setFloat(Float _float) {
+    this._float = _float;
+  }
+
+  public FormatTest _float(Float _float) {
+    this._float = _float;
+    return this;
+  }
+
+  /**
+   * Get _double
+   * minimum: 67.8
+   * maximum: 123.4
+   * @return _double
+   **/
+  public Double getDouble() {
+    return _double;
+  }
+
+  /**
+   * Set _double
+   */
+  public void setDouble(Double _double) {
+    this._double = _double;
+  }
+
+  public FormatTest _double(Double _double) {
+    this._double = _double;
+    return this;
+  }
+
+  /**
+   * Get decimal
+   * @return decimal
+   **/
+  public BigDecimal getDecimal() {
+    return decimal;
+  }
+
+  /**
+   * Set decimal
+   */
+  public void setDecimal(BigDecimal decimal) {
+    this.decimal = decimal;
+  }
+
+  public FormatTest decimal(BigDecimal decimal) {
+    this.decimal = decimal;
+    return this;
+  }
+
+  /**
+   * Get string
+   * @return string
+   **/
+  public String getString() {
+    return string;
+  }
+
+  /**
+   * Set string
+   */
+  public void setString(String string) {
+    this.string = string;
+  }
+
+  public FormatTest string(String string) {
+    this.string = string;
+    return this;
+  }
+
+  /**
+   * Get _byte
+   * @return _byte
+   **/
+  public byte[] getByte() {
+    return _byte;
+  }
+
+  /**
+   * Set _byte
+   */
+  public void setByte(byte[] _byte) {
+    this._byte = _byte;
+  }
+
+  public FormatTest _byte(byte[] _byte) {
+    this._byte = _byte;
+    return this;
+  }
+
+  /**
+   * Get binary
+   * @return binary
+   **/
+  public File getBinary() {
+    return binary;
+  }
+
+  /**
+   * Set binary
+   */
+  public void setBinary(File binary) {
+    this.binary = binary;
+  }
+
+  public FormatTest binary(File binary) {
+    this.binary = binary;
+    return this;
+  }
+
+  /**
+   * Get date
+   * @return date
+   **/
+  public Date getDate() {
+    return date;
+  }
+
+  /**
+   * Set date
+   */
+  public void setDate(Date date) {
+    this.date = date;
+  }
+
+  public FormatTest date(Date date) {
+    this.date = date;
+    return this;
+  }
+
+  /**
+   * Get dateTime
+   * @return dateTime
+   **/
+  public Date getDateTime() {
+    return dateTime;
+  }
+
+  /**
+   * Set dateTime
+   */
+  public void setDateTime(Date dateTime) {
+    this.dateTime = dateTime;
+  }
+
+  public FormatTest dateTime(Date dateTime) {
+    this.dateTime = dateTime;
+    return this;
+  }
+
+  /**
+   * Get uuid
+   * @return uuid
+   **/
+  public UUID getUuid() {
+    return uuid;
+  }
+
+  /**
+   * Set uuid
+   */
+  public void setUuid(UUID uuid) {
+    this.uuid = uuid;
+  }
+
+  public FormatTest uuid(UUID uuid) {
+    this.uuid = uuid;
+    return this;
+  }
+
+  /**
+   * Get password
+   * @return password
+   **/
+  public String getPassword() {
+    return password;
+  }
+
+  /**
+   * Set password
+   */
+  public void setPassword(String password) {
+    this.password = password;
+  }
+
+  public FormatTest password(String password) {
+    this.password = password;
+    return this;
+  }
+
+  /**
+   * A string that is a 10 digit number. Can have leading zeros.
+   * @return patternWithDigits
+   **/
+  public String getPatternWithDigits() {
+    return patternWithDigits;
+  }
+
+  /**
+   * Set patternWithDigits
+   */
+  public void setPatternWithDigits(String patternWithDigits) {
+    this.patternWithDigits = patternWithDigits;
+  }
+
+  public FormatTest patternWithDigits(String patternWithDigits) {
+    this.patternWithDigits = patternWithDigits;
+    return this;
+  }
+
+  /**
+   * A string starting with &#39;image_&#39; (case insensitive) and one to three digits following i.e. Image_01.
+   * @return patternWithDigitsAndDelimiter
+   **/
+  public String getPatternWithDigitsAndDelimiter() {
+    return patternWithDigitsAndDelimiter;
+  }
+
+  /**
+   * Set patternWithDigitsAndDelimiter
+   */
+  public void setPatternWithDigitsAndDelimiter(String patternWithDigitsAndDelimiter) {
+    this.patternWithDigitsAndDelimiter = patternWithDigitsAndDelimiter;
+  }
+
+  public FormatTest patternWithDigitsAndDelimiter(String patternWithDigitsAndDelimiter) {
+    this.patternWithDigitsAndDelimiter = patternWithDigitsAndDelimiter;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    FormatTest formatTest = (FormatTest) o;
+    return Objects.equals(this.integer, formatTest.integer) &&
+        Objects.equals(this.int32, formatTest.int32) &&
+        Objects.equals(this.int64, formatTest.int64) &&
+        Objects.equals(this.number, formatTest.number) &&
+        Objects.equals(this._float, formatTest._float) &&
+        Objects.equals(this._double, formatTest._double) &&
+        Objects.equals(this.decimal, formatTest.decimal) &&
+        Objects.equals(this.string, formatTest.string) &&
+        Arrays.equals(this._byte, formatTest._byte) &&
+        Objects.equals(this.binary, formatTest.binary) &&
+        Objects.equals(this.date, formatTest.date) &&
+        Objects.equals(this.dateTime, formatTest.dateTime) &&
+        Objects.equals(this.uuid, formatTest.uuid) &&
+        Objects.equals(this.password, formatTest.password) &&
+        Objects.equals(this.patternWithDigits, formatTest.patternWithDigits) &&
+        Objects.equals(this.patternWithDigitsAndDelimiter, formatTest.patternWithDigitsAndDelimiter);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(integer, int32, int64, number, _float, _double, decimal, string, Arrays.hashCode(_byte), binary, date, dateTime, uuid, password, patternWithDigits, patternWithDigitsAndDelimiter);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class FormatTest {\n");
+    
+    sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
+    sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
+    sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
+    sb.append("    number: ").append(toIndentedString(number)).append("\n");
+    sb.append("    _float: ").append(toIndentedString(_float)).append("\n");
+    sb.append("    _double: ").append(toIndentedString(_double)).append("\n");
+    sb.append("    decimal: ").append(toIndentedString(decimal)).append("\n");
+    sb.append("    string: ").append(toIndentedString(string)).append("\n");
+    sb.append("    _byte: ").append(toIndentedString(_byte)).append("\n");
+    sb.append("    binary: ").append(toIndentedString(binary)).append("\n");
+    sb.append("    date: ").append(toIndentedString(date)).append("\n");
+    sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
+    sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
+    sb.append("    password: ").append("*").append("\n");
+    sb.append("    patternWithDigits: ").append(toIndentedString(patternWithDigits)).append("\n");
+    sb.append("    patternWithDigitsAndDelimiter: ").append(toIndentedString(patternWithDigitsAndDelimiter)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/HasOnlyReadOnly.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/HasOnlyReadOnly.java
new file mode 100644
index 00000000000..a0acef63f83
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/HasOnlyReadOnly.java
@@ -0,0 +1,114 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+public class HasOnlyReadOnly  {
+  
+  @JsonbProperty("bar")
+  private String bar;
+
+  @JsonbProperty("foo")
+  private String foo;
+
+  public HasOnlyReadOnly() {
+  }
+
+ @JsonbCreator
+  public HasOnlyReadOnly(
+    @JsonbProperty(value = "bar", nillable = true) String bar, 
+    @JsonbProperty(value = "foo", nillable = true) String foo
+  ) {
+    this.bar = bar;
+    this.foo = foo;
+  }
+  
+  /**
+   * Get bar
+   * @return bar
+   **/
+  public String getBar() {
+    return bar;
+  }
+
+
+  /**
+   * Get foo
+   * @return foo
+   **/
+  public String getFoo() {
+    return foo;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    HasOnlyReadOnly hasOnlyReadOnly = (HasOnlyReadOnly) o;
+    return Objects.equals(this.bar, hasOnlyReadOnly.bar) &&
+        Objects.equals(this.foo, hasOnlyReadOnly.foo);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(bar, foo);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class HasOnlyReadOnly {\n");
+    
+    sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
+    sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/HealthCheckResult.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/HealthCheckResult.java
new file mode 100644
index 00000000000..2d31a84671a
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/HealthCheckResult.java
@@ -0,0 +1,102 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+/**
+  * Just a string to inform instance is up and running. Make it nullable in hope to get it as pointer in generated model.
+  */
+
+public class HealthCheckResult  {
+  
+  @JsonbProperty("NullableMessage")
+  private String nullableMessage;
+
+  /**
+   * Get nullableMessage
+   * @return nullableMessage
+   **/
+  public String getNullableMessage() {
+    return nullableMessage;
+  }
+
+  /**
+   * Set nullableMessage
+   */
+  public void setNullableMessage(String nullableMessage) {
+    this.nullableMessage = nullableMessage;
+  }
+
+  public HealthCheckResult nullableMessage(String nullableMessage) {
+    this.nullableMessage = nullableMessage;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    HealthCheckResult healthCheckResult = (HealthCheckResult) o;
+    return Objects.equals(this.nullableMessage, healthCheckResult.nullableMessage);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(nullableMessage);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class HealthCheckResult {\n");
+    
+    sb.append("    nullableMessage: ").append(toIndentedString(nullableMessage)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/MapTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/MapTest.java
new file mode 100644
index 00000000000..a72e26d9632
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/MapTest.java
@@ -0,0 +1,250 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Map;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+public class MapTest  {
+  
+  @JsonbProperty("map_map_of_string")
+  private Map<String, Map<String, String>> mapMapOfString = null;
+
+  @JsonbTypeSerializer(InnerEnum.Serializer.class)
+  @JsonbTypeDeserializer(InnerEnum.Deserializer.class)
+  public enum InnerEnum {
+
+    UPPER(String.valueOf("UPPER")), LOWER(String.valueOf("lower"));
+
+
+    String value;
+
+    InnerEnum (String v) {
+        value = v;
+    }
+
+    public String value() {
+        return value;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(value);
+    }
+
+    public static final class Deserializer implements JsonbDeserializer<InnerEnum> {
+        @Override
+        public InnerEnum deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+            for (InnerEnum b : InnerEnum.values()) {
+                if (String.valueOf(b.value).equals(parser.getString())) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + parser.getString() + "'");
+        }
+    }
+
+    public static final class Serializer implements JsonbSerializer<InnerEnum> {
+        @Override
+        public void serialize(InnerEnum obj, JsonGenerator generator, SerializationContext ctx) {
+            generator.write(obj.value);
+        }
+    }
+  }
+
+  @JsonbProperty("map_of_enum_string")
+  private Map<String, InnerEnum> mapOfEnumString = null;
+
+  @JsonbProperty("direct_map")
+  private Map<String, Boolean> directMap = null;
+
+  @JsonbProperty("indirect_map")
+  private Map<String, Boolean> indirectMap = null;
+
+  /**
+   * Get mapMapOfString
+   * @return mapMapOfString
+   **/
+  public Map<String, Map<String, String>> getMapMapOfString() {
+    return mapMapOfString;
+  }
+
+  /**
+   * Set mapMapOfString
+   */
+  public void setMapMapOfString(Map<String, Map<String, String>> mapMapOfString) {
+    this.mapMapOfString = mapMapOfString;
+  }
+
+  public MapTest mapMapOfString(Map<String, Map<String, String>> mapMapOfString) {
+    this.mapMapOfString = mapMapOfString;
+    return this;
+  }
+
+  public MapTest putMapMapOfStringItem(String key, Map<String, String> mapMapOfStringItem) {
+    if (this.mapMapOfString == null) {
+      this.mapMapOfString = new HashMap<>();
+    }
+    this.mapMapOfString.put(key, mapMapOfStringItem);
+    return this;
+  }
+
+  /**
+   * Get mapOfEnumString
+   * @return mapOfEnumString
+   **/
+  public Map<String, InnerEnum> getMapOfEnumString() {
+    return mapOfEnumString;
+  }
+
+  /**
+   * Set mapOfEnumString
+   */
+  public void setMapOfEnumString(Map<String, InnerEnum> mapOfEnumString) {
+    this.mapOfEnumString = mapOfEnumString;
+  }
+
+  public MapTest mapOfEnumString(Map<String, InnerEnum> mapOfEnumString) {
+    this.mapOfEnumString = mapOfEnumString;
+    return this;
+  }
+
+  public MapTest putMapOfEnumStringItem(String key, InnerEnum mapOfEnumStringItem) {
+    if (this.mapOfEnumString == null) {
+      this.mapOfEnumString = new HashMap<>();
+    }
+    this.mapOfEnumString.put(key, mapOfEnumStringItem);
+    return this;
+  }
+
+  /**
+   * Get directMap
+   * @return directMap
+   **/
+  public Map<String, Boolean> getDirectMap() {
+    return directMap;
+  }
+
+  /**
+   * Set directMap
+   */
+  public void setDirectMap(Map<String, Boolean> directMap) {
+    this.directMap = directMap;
+  }
+
+  public MapTest directMap(Map<String, Boolean> directMap) {
+    this.directMap = directMap;
+    return this;
+  }
+
+  public MapTest putDirectMapItem(String key, Boolean directMapItem) {
+    if (this.directMap == null) {
+      this.directMap = new HashMap<>();
+    }
+    this.directMap.put(key, directMapItem);
+    return this;
+  }
+
+  /**
+   * Get indirectMap
+   * @return indirectMap
+   **/
+  public Map<String, Boolean> getIndirectMap() {
+    return indirectMap;
+  }
+
+  /**
+   * Set indirectMap
+   */
+  public void setIndirectMap(Map<String, Boolean> indirectMap) {
+    this.indirectMap = indirectMap;
+  }
+
+  public MapTest indirectMap(Map<String, Boolean> indirectMap) {
+    this.indirectMap = indirectMap;
+    return this;
+  }
+
+  public MapTest putIndirectMapItem(String key, Boolean indirectMapItem) {
+    if (this.indirectMap == null) {
+      this.indirectMap = new HashMap<>();
+    }
+    this.indirectMap.put(key, indirectMapItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    MapTest mapTest = (MapTest) o;
+    return Objects.equals(this.mapMapOfString, mapTest.mapMapOfString) &&
+        Objects.equals(this.mapOfEnumString, mapTest.mapOfEnumString) &&
+        Objects.equals(this.directMap, mapTest.directMap) &&
+        Objects.equals(this.indirectMap, mapTest.indirectMap);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(mapMapOfString, mapOfEnumString, directMap, indirectMap);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class MapTest {\n");
+    
+    sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
+    sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
+    sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
+    sb.append("    indirectMap: ").append(toIndentedString(indirectMap)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
new file mode 100644
index 00000000000..514f7b526a0
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -0,0 +1,162 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.UUID;
+import org.openapitools.client.model.Animal;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+public class MixedPropertiesAndAdditionalPropertiesClass  {
+  
+  @JsonbProperty("uuid")
+  private UUID uuid;
+
+  @JsonbProperty("dateTime")
+  private Date dateTime;
+
+  @JsonbProperty("map")
+  private Map<String, Animal> map = null;
+
+  /**
+   * Get uuid
+   * @return uuid
+   **/
+  public UUID getUuid() {
+    return uuid;
+  }
+
+  /**
+   * Set uuid
+   */
+  public void setUuid(UUID uuid) {
+    this.uuid = uuid;
+  }
+
+  public MixedPropertiesAndAdditionalPropertiesClass uuid(UUID uuid) {
+    this.uuid = uuid;
+    return this;
+  }
+
+  /**
+   * Get dateTime
+   * @return dateTime
+   **/
+  public Date getDateTime() {
+    return dateTime;
+  }
+
+  /**
+   * Set dateTime
+   */
+  public void setDateTime(Date dateTime) {
+    this.dateTime = dateTime;
+  }
+
+  public MixedPropertiesAndAdditionalPropertiesClass dateTime(Date dateTime) {
+    this.dateTime = dateTime;
+    return this;
+  }
+
+  /**
+   * Get map
+   * @return map
+   **/
+  public Map<String, Animal> getMap() {
+    return map;
+  }
+
+  /**
+   * Set map
+   */
+  public void setMap(Map<String, Animal> map) {
+    this.map = map;
+  }
+
+  public MixedPropertiesAndAdditionalPropertiesClass map(Map<String, Animal> map) {
+    this.map = map;
+    return this;
+  }
+
+  public MixedPropertiesAndAdditionalPropertiesClass putMapItem(String key, Animal mapItem) {
+    if (this.map == null) {
+      this.map = new HashMap<>();
+    }
+    this.map.put(key, mapItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    MixedPropertiesAndAdditionalPropertiesClass mixedPropertiesAndAdditionalPropertiesClass = (MixedPropertiesAndAdditionalPropertiesClass) o;
+    return Objects.equals(this.uuid, mixedPropertiesAndAdditionalPropertiesClass.uuid) &&
+        Objects.equals(this.dateTime, mixedPropertiesAndAdditionalPropertiesClass.dateTime) &&
+        Objects.equals(this.map, mixedPropertiesAndAdditionalPropertiesClass.map);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(uuid, dateTime, map);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
+    
+    sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
+    sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
+    sb.append("    map: ").append(toIndentedString(map)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Model200Response.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Model200Response.java
new file mode 100644
index 00000000000..3df24e0a6e3
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Model200Response.java
@@ -0,0 +1,127 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+/**
+  * Model for testing model name starting with number
+  */
+
+public class Model200Response  {
+  
+  @JsonbProperty("name")
+  private Integer name;
+
+  @JsonbProperty("class")
+  private String propertyClass;
+
+  /**
+   * Get name
+   * @return name
+   **/
+  public Integer getName() {
+    return name;
+  }
+
+  /**
+   * Set name
+   */
+  public void setName(Integer name) {
+    this.name = name;
+  }
+
+  public Model200Response name(Integer name) {
+    this.name = name;
+    return this;
+  }
+
+  /**
+   * Get propertyClass
+   * @return propertyClass
+   **/
+  public String getPropertyClass() {
+    return propertyClass;
+  }
+
+  /**
+   * Set propertyClass
+   */
+  public void setPropertyClass(String propertyClass) {
+    this.propertyClass = propertyClass;
+  }
+
+  public Model200Response propertyClass(String propertyClass) {
+    this.propertyClass = propertyClass;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Model200Response _200response = (Model200Response) o;
+    return Objects.equals(this.name, _200response.name) &&
+        Objects.equals(this.propertyClass, _200response.propertyClass);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(name, propertyClass);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Model200Response {\n");
+    
+    sb.append("    name: ").append(toIndentedString(name)).append("\n");
+    sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ModelApiResponse.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ModelApiResponse.java
index 2791024ba29..e7e28fc9d24 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ModelApiResponse.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ModelApiResponse.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -24,10 +24,11 @@ import jakarta.json.bind.serializer.SerializationContext;
 import jakarta.json.stream.JsonGenerator;
 import jakarta.json.stream.JsonParser;
 import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
 
-/**
-  * Describes the result of uploading an image resource
-  */
 
 public class ModelApiResponse  {
   
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ModelFile.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ModelFile.java
new file mode 100644
index 00000000000..f20227a239d
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ModelFile.java
@@ -0,0 +1,105 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+/**
+  * Must be named `File` for test.
+  */
+
+public class ModelFile  {
+  
+ /**
+  * Test capitalization
+  */
+  @JsonbProperty("sourceURI")
+  private String sourceURI;
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+   **/
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  /**
+   * Set sourceURI
+   */
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ModelList.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ModelList.java
new file mode 100644
index 00000000000..59088b385b2
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ModelList.java
@@ -0,0 +1,99 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+public class ModelList  {
+  
+  @JsonbProperty("123-list")
+  private String _123list;
+
+  /**
+   * Get _123list
+   * @return _123list
+   **/
+  public String get123list() {
+    return _123list;
+  }
+
+  /**
+   * Set _123list
+   */
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ModelReturn.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ModelReturn.java
new file mode 100644
index 00000000000..13c0976d0d2
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ModelReturn.java
@@ -0,0 +1,102 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+/**
+  * Model for testing reserved words
+  */
+
+public class ModelReturn  {
+  
+  @JsonbProperty("return")
+  private Integer _return;
+
+  /**
+   * Get _return
+   * @return _return
+   **/
+  public Integer getReturn() {
+    return _return;
+  }
+
+  /**
+   * Set _return
+   */
+  public void setReturn(Integer _return) {
+    this._return = _return;
+  }
+
+  public ModelReturn _return(Integer _return) {
+    this._return = _return;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelReturn _return = (ModelReturn) o;
+    return Objects.equals(this._return, _return._return);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_return);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelReturn {\n");
+    
+    sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Name.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Name.java
new file mode 100644
index 00000000000..03554c24af5
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Name.java
@@ -0,0 +1,167 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+/**
+  * Model for testing model name same as property name
+  */
+
+public class Name  {
+  
+  @JsonbProperty("name")
+  private Integer name;
+
+  @JsonbProperty("snake_case")
+  private Integer snakeCase;
+
+  @JsonbProperty("property")
+  private String property;
+
+  @JsonbProperty("123Number")
+  private Integer _123number;
+
+  public Name() {
+  }
+
+ @JsonbCreator
+  public Name(
+    @JsonbProperty(value = "snake_case", nillable = true) Integer snakeCase, 
+    @JsonbProperty(value = "123Number", nillable = true) Integer _123number
+  ) {
+    this.snakeCase = snakeCase;
+    this._123number = _123number;
+  }
+  
+  /**
+   * Get name
+   * @return name
+   **/
+  public Integer getName() {
+    return name;
+  }
+
+  /**
+   * Set name
+   */
+  public void setName(Integer name) {
+    this.name = name;
+  }
+
+  public Name name(Integer name) {
+    this.name = name;
+    return this;
+  }
+
+  /**
+   * Get snakeCase
+   * @return snakeCase
+   **/
+  public Integer getSnakeCase() {
+    return snakeCase;
+  }
+
+
+  /**
+   * Get property
+   * @return property
+   **/
+  public String getProperty() {
+    return property;
+  }
+
+  /**
+   * Set property
+   */
+  public void setProperty(String property) {
+    this.property = property;
+  }
+
+  public Name property(String property) {
+    this.property = property;
+    return this;
+  }
+
+  /**
+   * Get _123number
+   * @return _123number
+   **/
+  public Integer get123number() {
+    return _123number;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Name name = (Name) o;
+    return Objects.equals(this.name, name.name) &&
+        Objects.equals(this.snakeCase, name.snakeCase) &&
+        Objects.equals(this.property, name.property) &&
+        Objects.equals(this._123number, name._123number);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(name, snakeCase, property, _123number);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Name {\n");
+    
+    sb.append("    name: ").append(toIndentedString(name)).append("\n");
+    sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
+    sb.append("    property: ").append(toIndentedString(property)).append("\n");
+    sb.append("    _123number: ").append(toIndentedString(_123number)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/NullableClass.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/NullableClass.java
new file mode 100644
index 00000000000..1203f4749cd
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/NullableClass.java
@@ -0,0 +1,430 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+public class NullableClass extends HashMap<String, Object> {
+  
+  @JsonbProperty("integer_prop")
+  private Integer integerProp;
+
+  @JsonbProperty("number_prop")
+  private BigDecimal numberProp;
+
+  @JsonbProperty("boolean_prop")
+  private Boolean booleanProp;
+
+  @JsonbProperty("string_prop")
+  private String stringProp;
+
+  @JsonbProperty("date_prop")
+  private Date dateProp;
+
+  @JsonbProperty("datetime_prop")
+  private Date datetimeProp;
+
+  @JsonbProperty("array_nullable_prop")
+  private List<Object> arrayNullableProp = null;
+
+  @JsonbProperty("array_and_items_nullable_prop")
+  private List<Object> arrayAndItemsNullableProp = null;
+
+  @JsonbProperty("array_items_nullable")
+  private List<Object> arrayItemsNullable = null;
+
+  @JsonbProperty("object_nullable_prop")
+  private Map<String, Object> objectNullableProp = null;
+
+  @JsonbProperty("object_and_items_nullable_prop")
+  private Map<String, Object> objectAndItemsNullableProp = null;
+
+  @JsonbProperty("object_items_nullable")
+  private Map<String, Object> objectItemsNullable = null;
+
+  /**
+   * Get integerProp
+   * @return integerProp
+   **/
+  public Integer getIntegerProp() {
+    return integerProp;
+  }
+
+  /**
+   * Set integerProp
+   */
+  public void setIntegerProp(Integer integerProp) {
+    this.integerProp = integerProp;
+  }
+
+  public NullableClass integerProp(Integer integerProp) {
+    this.integerProp = integerProp;
+    return this;
+  }
+
+  /**
+   * Get numberProp
+   * @return numberProp
+   **/
+  public BigDecimal getNumberProp() {
+    return numberProp;
+  }
+
+  /**
+   * Set numberProp
+   */
+  public void setNumberProp(BigDecimal numberProp) {
+    this.numberProp = numberProp;
+  }
+
+  public NullableClass numberProp(BigDecimal numberProp) {
+    this.numberProp = numberProp;
+    return this;
+  }
+
+  /**
+   * Get booleanProp
+   * @return booleanProp
+   **/
+  public Boolean getBooleanProp() {
+    return booleanProp;
+  }
+
+  /**
+   * Set booleanProp
+   */
+  public void setBooleanProp(Boolean booleanProp) {
+    this.booleanProp = booleanProp;
+  }
+
+  public NullableClass booleanProp(Boolean booleanProp) {
+    this.booleanProp = booleanProp;
+    return this;
+  }
+
+  /**
+   * Get stringProp
+   * @return stringProp
+   **/
+  public String getStringProp() {
+    return stringProp;
+  }
+
+  /**
+   * Set stringProp
+   */
+  public void setStringProp(String stringProp) {
+    this.stringProp = stringProp;
+  }
+
+  public NullableClass stringProp(String stringProp) {
+    this.stringProp = stringProp;
+    return this;
+  }
+
+  /**
+   * Get dateProp
+   * @return dateProp
+   **/
+  public Date getDateProp() {
+    return dateProp;
+  }
+
+  /**
+   * Set dateProp
+   */
+  public void setDateProp(Date dateProp) {
+    this.dateProp = dateProp;
+  }
+
+  public NullableClass dateProp(Date dateProp) {
+    this.dateProp = dateProp;
+    return this;
+  }
+
+  /**
+   * Get datetimeProp
+   * @return datetimeProp
+   **/
+  public Date getDatetimeProp() {
+    return datetimeProp;
+  }
+
+  /**
+   * Set datetimeProp
+   */
+  public void setDatetimeProp(Date datetimeProp) {
+    this.datetimeProp = datetimeProp;
+  }
+
+  public NullableClass datetimeProp(Date datetimeProp) {
+    this.datetimeProp = datetimeProp;
+    return this;
+  }
+
+  /**
+   * Get arrayNullableProp
+   * @return arrayNullableProp
+   **/
+  public List<Object> getArrayNullableProp() {
+    return arrayNullableProp;
+  }
+
+  /**
+   * Set arrayNullableProp
+   */
+  public void setArrayNullableProp(List<Object> arrayNullableProp) {
+    this.arrayNullableProp = arrayNullableProp;
+  }
+
+  public NullableClass arrayNullableProp(List<Object> arrayNullableProp) {
+    this.arrayNullableProp = arrayNullableProp;
+    return this;
+  }
+
+  public NullableClass addArrayNullablePropItem(Object arrayNullablePropItem) {
+    if (this.arrayNullableProp == null) {
+      this.arrayNullableProp = new ArrayList<>();
+    }
+    this.arrayNullableProp.add(arrayNullablePropItem);
+    return this;
+  }
+
+  /**
+   * Get arrayAndItemsNullableProp
+   * @return arrayAndItemsNullableProp
+   **/
+  public List<Object> getArrayAndItemsNullableProp() {
+    return arrayAndItemsNullableProp;
+  }
+
+  /**
+   * Set arrayAndItemsNullableProp
+   */
+  public void setArrayAndItemsNullableProp(List<Object> arrayAndItemsNullableProp) {
+    this.arrayAndItemsNullableProp = arrayAndItemsNullableProp;
+  }
+
+  public NullableClass arrayAndItemsNullableProp(List<Object> arrayAndItemsNullableProp) {
+    this.arrayAndItemsNullableProp = arrayAndItemsNullableProp;
+    return this;
+  }
+
+  public NullableClass addArrayAndItemsNullablePropItem(Object arrayAndItemsNullablePropItem) {
+    if (this.arrayAndItemsNullableProp == null) {
+      this.arrayAndItemsNullableProp = new ArrayList<>();
+    }
+    this.arrayAndItemsNullableProp.add(arrayAndItemsNullablePropItem);
+    return this;
+  }
+
+  /**
+   * Get arrayItemsNullable
+   * @return arrayItemsNullable
+   **/
+  public List<Object> getArrayItemsNullable() {
+    return arrayItemsNullable;
+  }
+
+  /**
+   * Set arrayItemsNullable
+   */
+  public void setArrayItemsNullable(List<Object> arrayItemsNullable) {
+    this.arrayItemsNullable = arrayItemsNullable;
+  }
+
+  public NullableClass arrayItemsNullable(List<Object> arrayItemsNullable) {
+    this.arrayItemsNullable = arrayItemsNullable;
+    return this;
+  }
+
+  public NullableClass addArrayItemsNullableItem(Object arrayItemsNullableItem) {
+    if (this.arrayItemsNullable == null) {
+      this.arrayItemsNullable = new ArrayList<>();
+    }
+    this.arrayItemsNullable.add(arrayItemsNullableItem);
+    return this;
+  }
+
+  /**
+   * Get objectNullableProp
+   * @return objectNullableProp
+   **/
+  public Map<String, Object> getObjectNullableProp() {
+    return objectNullableProp;
+  }
+
+  /**
+   * Set objectNullableProp
+   */
+  public void setObjectNullableProp(Map<String, Object> objectNullableProp) {
+    this.objectNullableProp = objectNullableProp;
+  }
+
+  public NullableClass objectNullableProp(Map<String, Object> objectNullableProp) {
+    this.objectNullableProp = objectNullableProp;
+    return this;
+  }
+
+  public NullableClass putObjectNullablePropItem(String key, Object objectNullablePropItem) {
+    if (this.objectNullableProp == null) {
+      this.objectNullableProp = new HashMap<>();
+    }
+    this.objectNullableProp.put(key, objectNullablePropItem);
+    return this;
+  }
+
+  /**
+   * Get objectAndItemsNullableProp
+   * @return objectAndItemsNullableProp
+   **/
+  public Map<String, Object> getObjectAndItemsNullableProp() {
+    return objectAndItemsNullableProp;
+  }
+
+  /**
+   * Set objectAndItemsNullableProp
+   */
+  public void setObjectAndItemsNullableProp(Map<String, Object> objectAndItemsNullableProp) {
+    this.objectAndItemsNullableProp = objectAndItemsNullableProp;
+  }
+
+  public NullableClass objectAndItemsNullableProp(Map<String, Object> objectAndItemsNullableProp) {
+    this.objectAndItemsNullableProp = objectAndItemsNullableProp;
+    return this;
+  }
+
+  public NullableClass putObjectAndItemsNullablePropItem(String key, Object objectAndItemsNullablePropItem) {
+    if (this.objectAndItemsNullableProp == null) {
+      this.objectAndItemsNullableProp = new HashMap<>();
+    }
+    this.objectAndItemsNullableProp.put(key, objectAndItemsNullablePropItem);
+    return this;
+  }
+
+  /**
+   * Get objectItemsNullable
+   * @return objectItemsNullable
+   **/
+  public Map<String, Object> getObjectItemsNullable() {
+    return objectItemsNullable;
+  }
+
+  /**
+   * Set objectItemsNullable
+   */
+  public void setObjectItemsNullable(Map<String, Object> objectItemsNullable) {
+    this.objectItemsNullable = objectItemsNullable;
+  }
+
+  public NullableClass objectItemsNullable(Map<String, Object> objectItemsNullable) {
+    this.objectItemsNullable = objectItemsNullable;
+    return this;
+  }
+
+  public NullableClass putObjectItemsNullableItem(String key, Object objectItemsNullableItem) {
+    if (this.objectItemsNullable == null) {
+      this.objectItemsNullable = new HashMap<>();
+    }
+    this.objectItemsNullable.put(key, objectItemsNullableItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    NullableClass nullableClass = (NullableClass) o;
+    return Objects.equals(this.integerProp, nullableClass.integerProp) &&
+        Objects.equals(this.numberProp, nullableClass.numberProp) &&
+        Objects.equals(this.booleanProp, nullableClass.booleanProp) &&
+        Objects.equals(this.stringProp, nullableClass.stringProp) &&
+        Objects.equals(this.dateProp, nullableClass.dateProp) &&
+        Objects.equals(this.datetimeProp, nullableClass.datetimeProp) &&
+        Objects.equals(this.arrayNullableProp, nullableClass.arrayNullableProp) &&
+        Objects.equals(this.arrayAndItemsNullableProp, nullableClass.arrayAndItemsNullableProp) &&
+        Objects.equals(this.arrayItemsNullable, nullableClass.arrayItemsNullable) &&
+        Objects.equals(this.objectNullableProp, nullableClass.objectNullableProp) &&
+        Objects.equals(this.objectAndItemsNullableProp, nullableClass.objectAndItemsNullableProp) &&
+        Objects.equals(this.objectItemsNullable, nullableClass.objectItemsNullable) &&
+        super.equals(o);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(integerProp, numberProp, booleanProp, stringProp, dateProp, datetimeProp, arrayNullableProp, arrayAndItemsNullableProp, arrayItemsNullable, objectNullableProp, objectAndItemsNullableProp, objectItemsNullable, super.hashCode());
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class NullableClass {\n");
+    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+    sb.append("    integerProp: ").append(toIndentedString(integerProp)).append("\n");
+    sb.append("    numberProp: ").append(toIndentedString(numberProp)).append("\n");
+    sb.append("    booleanProp: ").append(toIndentedString(booleanProp)).append("\n");
+    sb.append("    stringProp: ").append(toIndentedString(stringProp)).append("\n");
+    sb.append("    dateProp: ").append(toIndentedString(dateProp)).append("\n");
+    sb.append("    datetimeProp: ").append(toIndentedString(datetimeProp)).append("\n");
+    sb.append("    arrayNullableProp: ").append(toIndentedString(arrayNullableProp)).append("\n");
+    sb.append("    arrayAndItemsNullableProp: ").append(toIndentedString(arrayAndItemsNullableProp)).append("\n");
+    sb.append("    arrayItemsNullable: ").append(toIndentedString(arrayItemsNullable)).append("\n");
+    sb.append("    objectNullableProp: ").append(toIndentedString(objectNullableProp)).append("\n");
+    sb.append("    objectAndItemsNullableProp: ").append(toIndentedString(objectAndItemsNullableProp)).append("\n");
+    sb.append("    objectItemsNullable: ").append(toIndentedString(objectItemsNullable)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/NumberOnly.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/NumberOnly.java
new file mode 100644
index 00000000000..36bf4b2fcc9
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/NumberOnly.java
@@ -0,0 +1,100 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.math.BigDecimal;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+public class NumberOnly  {
+  
+  @JsonbProperty("JustNumber")
+  private BigDecimal justNumber;
+
+  /**
+   * Get justNumber
+   * @return justNumber
+   **/
+  public BigDecimal getJustNumber() {
+    return justNumber;
+  }
+
+  /**
+   * Set justNumber
+   */
+  public void setJustNumber(BigDecimal justNumber) {
+    this.justNumber = justNumber;
+  }
+
+  public NumberOnly justNumber(BigDecimal justNumber) {
+    this.justNumber = justNumber;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    NumberOnly numberOnly = (NumberOnly) o;
+    return Objects.equals(this.justNumber, numberOnly.justNumber);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(justNumber);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class NumberOnly {\n");
+    
+    sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ObjectWithDeprecatedFields.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ObjectWithDeprecatedFields.java
new file mode 100644
index 00000000000..d78f2b5d9b7
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ObjectWithDeprecatedFields.java
@@ -0,0 +1,193 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.openapitools.client.model.DeprecatedObject;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+public class ObjectWithDeprecatedFields  {
+  
+  @JsonbProperty("uuid")
+  private String uuid;
+
+  @JsonbProperty("id")
+  private BigDecimal id;
+
+  @JsonbProperty("deprecatedRef")
+  private DeprecatedObject deprecatedRef;
+
+  @JsonbProperty("bars")
+  private List<String> bars = null;
+
+  /**
+   * Get uuid
+   * @return uuid
+   **/
+  public String getUuid() {
+    return uuid;
+  }
+
+  /**
+   * Set uuid
+   */
+  public void setUuid(String uuid) {
+    this.uuid = uuid;
+  }
+
+  public ObjectWithDeprecatedFields uuid(String uuid) {
+    this.uuid = uuid;
+    return this;
+  }
+
+  /**
+   * Get id
+   * @return id
+   * @deprecated
+   **/
+  @Deprecated
+  public BigDecimal getId() {
+    return id;
+  }
+
+  /**
+   * Set id
+   */
+  public void setId(BigDecimal id) {
+    this.id = id;
+  }
+
+  public ObjectWithDeprecatedFields id(BigDecimal id) {
+    this.id = id;
+    return this;
+  }
+
+  /**
+   * Get deprecatedRef
+   * @return deprecatedRef
+   * @deprecated
+   **/
+  @Deprecated
+  public DeprecatedObject getDeprecatedRef() {
+    return deprecatedRef;
+  }
+
+  /**
+   * Set deprecatedRef
+   */
+  public void setDeprecatedRef(DeprecatedObject deprecatedRef) {
+    this.deprecatedRef = deprecatedRef;
+  }
+
+  public ObjectWithDeprecatedFields deprecatedRef(DeprecatedObject deprecatedRef) {
+    this.deprecatedRef = deprecatedRef;
+    return this;
+  }
+
+  /**
+   * Get bars
+   * @return bars
+   * @deprecated
+   **/
+  @Deprecated
+  public List<String> getBars() {
+    return bars;
+  }
+
+  /**
+   * Set bars
+   */
+  public void setBars(List<String> bars) {
+    this.bars = bars;
+  }
+
+  public ObjectWithDeprecatedFields bars(List<String> bars) {
+    this.bars = bars;
+    return this;
+  }
+
+  public ObjectWithDeprecatedFields addBarsItem(String barsItem) {
+    if (this.bars == null) {
+      this.bars = new ArrayList<>();
+    }
+    this.bars.add(barsItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ObjectWithDeprecatedFields objectWithDeprecatedFields = (ObjectWithDeprecatedFields) o;
+    return Objects.equals(this.uuid, objectWithDeprecatedFields.uuid) &&
+        Objects.equals(this.id, objectWithDeprecatedFields.id) &&
+        Objects.equals(this.deprecatedRef, objectWithDeprecatedFields.deprecatedRef) &&
+        Objects.equals(this.bars, objectWithDeprecatedFields.bars);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(uuid, id, deprecatedRef, bars);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ObjectWithDeprecatedFields {\n");
+    
+    sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
+    sb.append("    id: ").append(toIndentedString(id)).append("\n");
+    sb.append("    deprecatedRef: ").append(toIndentedString(deprecatedRef)).append("\n");
+    sb.append("    bars: ").append(toIndentedString(bars)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Order.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Order.java
index d7e654ce3a9..5a3f97ede37 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Order.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Order.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -25,10 +25,11 @@ import jakarta.json.bind.serializer.SerializationContext;
 import jakarta.json.stream.JsonGenerator;
 import jakarta.json.stream.JsonParser;
 import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
 
-/**
-  * An order for a pets from the pet store
-  */
 
 public class Order  {
   
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/OuterComposite.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/OuterComposite.java
new file mode 100644
index 00000000000..f206e7d341b
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/OuterComposite.java
@@ -0,0 +1,150 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.math.BigDecimal;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+public class OuterComposite  {
+  
+  @JsonbProperty("my_number")
+  private BigDecimal myNumber;
+
+  @JsonbProperty("my_string")
+  private String myString;
+
+  @JsonbProperty("my_boolean")
+  private Boolean myBoolean;
+
+  /**
+   * Get myNumber
+   * @return myNumber
+   **/
+  public BigDecimal getMyNumber() {
+    return myNumber;
+  }
+
+  /**
+   * Set myNumber
+   */
+  public void setMyNumber(BigDecimal myNumber) {
+    this.myNumber = myNumber;
+  }
+
+  public OuterComposite myNumber(BigDecimal myNumber) {
+    this.myNumber = myNumber;
+    return this;
+  }
+
+  /**
+   * Get myString
+   * @return myString
+   **/
+  public String getMyString() {
+    return myString;
+  }
+
+  /**
+   * Set myString
+   */
+  public void setMyString(String myString) {
+    this.myString = myString;
+  }
+
+  public OuterComposite myString(String myString) {
+    this.myString = myString;
+    return this;
+  }
+
+  /**
+   * Get myBoolean
+   * @return myBoolean
+   **/
+  public Boolean getMyBoolean() {
+    return myBoolean;
+  }
+
+  /**
+   * Set myBoolean
+   */
+  public void setMyBoolean(Boolean myBoolean) {
+    this.myBoolean = myBoolean;
+  }
+
+  public OuterComposite myBoolean(Boolean myBoolean) {
+    this.myBoolean = myBoolean;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    OuterComposite outerComposite = (OuterComposite) o;
+    return Objects.equals(this.myNumber, outerComposite.myNumber) &&
+        Objects.equals(this.myString, outerComposite.myString) &&
+        Objects.equals(this.myBoolean, outerComposite.myBoolean);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(myNumber, myString, myBoolean);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class OuterComposite {\n");
+    
+    sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
+    sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
+    sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/OuterEnum.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/OuterEnum.java
new file mode 100644
index 00000000000..a9b470bc379
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/OuterEnum.java
@@ -0,0 +1,80 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+/**
+ * Gets or Sets OuterEnum
+ */
+@JsonbTypeSerializer(OuterEnum.Serializer.class)
+@JsonbTypeDeserializer(OuterEnum.Deserializer.class)
+public enum OuterEnum {
+  
+  PLACED("placed"),
+  
+  APPROVED("approved"),
+  
+  DELIVERED("delivered");
+
+  private String value;
+
+  OuterEnum(String value) {
+    this.value = value;
+  }
+
+  @Override
+  public String toString() {
+    return String.valueOf(value);
+  }
+
+  public static final class Deserializer implements JsonbDeserializer<OuterEnum> {
+    @Override
+    public OuterEnum deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+      return fromValue(parser.getString());
+    }
+  }
+
+  public static final class Serializer implements JsonbSerializer<OuterEnum> {
+    @Override
+    public void serialize(OuterEnum obj, JsonGenerator generator, SerializationContext ctx) {
+      generator.write(obj.value);
+    }
+  }
+
+  public static OuterEnum fromValue(String text) {
+    for (OuterEnum b : OuterEnum.values()) {
+      if (String.valueOf(b.value).equals(text)) {
+        return b;
+      }
+    }
+    throw new IllegalArgumentException("Unexpected value '" + text + "'");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/OuterEnumDefaultValue.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/OuterEnumDefaultValue.java
new file mode 100644
index 00000000000..1bd09711b21
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/OuterEnumDefaultValue.java
@@ -0,0 +1,80 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+/**
+ * Gets or Sets OuterEnumDefaultValue
+ */
+@JsonbTypeSerializer(OuterEnumDefaultValue.Serializer.class)
+@JsonbTypeDeserializer(OuterEnumDefaultValue.Deserializer.class)
+public enum OuterEnumDefaultValue {
+  
+  PLACED("placed"),
+  
+  APPROVED("approved"),
+  
+  DELIVERED("delivered");
+
+  private String value;
+
+  OuterEnumDefaultValue(String value) {
+    this.value = value;
+  }
+
+  @Override
+  public String toString() {
+    return String.valueOf(value);
+  }
+
+  public static final class Deserializer implements JsonbDeserializer<OuterEnumDefaultValue> {
+    @Override
+    public OuterEnumDefaultValue deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+      return fromValue(parser.getString());
+    }
+  }
+
+  public static final class Serializer implements JsonbSerializer<OuterEnumDefaultValue> {
+    @Override
+    public void serialize(OuterEnumDefaultValue obj, JsonGenerator generator, SerializationContext ctx) {
+      generator.write(obj.value);
+    }
+  }
+
+  public static OuterEnumDefaultValue fromValue(String text) {
+    for (OuterEnumDefaultValue b : OuterEnumDefaultValue.values()) {
+      if (String.valueOf(b.value).equals(text)) {
+        return b;
+      }
+    }
+    throw new IllegalArgumentException("Unexpected value '" + text + "'");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/OuterEnumInteger.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/OuterEnumInteger.java
new file mode 100644
index 00000000000..9b439f909be
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/OuterEnumInteger.java
@@ -0,0 +1,80 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+/**
+ * Gets or Sets OuterEnumInteger
+ */
+@JsonbTypeSerializer(OuterEnumInteger.Serializer.class)
+@JsonbTypeDeserializer(OuterEnumInteger.Deserializer.class)
+public enum OuterEnumInteger {
+  
+  NUMBER_0(0),
+  
+  NUMBER_1(1),
+  
+  NUMBER_2(2);
+
+  private Integer value;
+
+  OuterEnumInteger(Integer value) {
+    this.value = value;
+  }
+
+  @Override
+  public String toString() {
+    return String.valueOf(value);
+  }
+
+  public static final class Deserializer implements JsonbDeserializer<OuterEnumInteger> {
+    @Override
+    public OuterEnumInteger deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+      return fromValue(parser.getString());
+    }
+  }
+
+  public static final class Serializer implements JsonbSerializer<OuterEnumInteger> {
+    @Override
+    public void serialize(OuterEnumInteger obj, JsonGenerator generator, SerializationContext ctx) {
+      generator.write(obj.value);
+    }
+  }
+
+  public static OuterEnumInteger fromValue(String text) {
+    for (OuterEnumInteger b : OuterEnumInteger.values()) {
+      if (String.valueOf(b.value).equals(text)) {
+        return b;
+      }
+    }
+    throw new IllegalArgumentException("Unexpected value '" + text + "'");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/OuterEnumIntegerDefaultValue.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/OuterEnumIntegerDefaultValue.java
new file mode 100644
index 00000000000..7c27c266480
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/OuterEnumIntegerDefaultValue.java
@@ -0,0 +1,80 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+/**
+ * Gets or Sets OuterEnumIntegerDefaultValue
+ */
+@JsonbTypeSerializer(OuterEnumIntegerDefaultValue.Serializer.class)
+@JsonbTypeDeserializer(OuterEnumIntegerDefaultValue.Deserializer.class)
+public enum OuterEnumIntegerDefaultValue {
+  
+  NUMBER_0(0),
+  
+  NUMBER_1(1),
+  
+  NUMBER_2(2);
+
+  private Integer value;
+
+  OuterEnumIntegerDefaultValue(Integer value) {
+    this.value = value;
+  }
+
+  @Override
+  public String toString() {
+    return String.valueOf(value);
+  }
+
+  public static final class Deserializer implements JsonbDeserializer<OuterEnumIntegerDefaultValue> {
+    @Override
+    public OuterEnumIntegerDefaultValue deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+      return fromValue(parser.getString());
+    }
+  }
+
+  public static final class Serializer implements JsonbSerializer<OuterEnumIntegerDefaultValue> {
+    @Override
+    public void serialize(OuterEnumIntegerDefaultValue obj, JsonGenerator generator, SerializationContext ctx) {
+      generator.write(obj.value);
+    }
+  }
+
+  public static OuterEnumIntegerDefaultValue fromValue(String text) {
+    for (OuterEnumIntegerDefaultValue b : OuterEnumIntegerDefaultValue.values()) {
+      if (String.valueOf(b.value).equals(text)) {
+        return b;
+      }
+    }
+    throw new IllegalArgumentException("Unexpected value '" + text + "'");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/OuterObjectWithEnumProperty.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/OuterObjectWithEnumProperty.java
new file mode 100644
index 00000000000..5d174aeb8f2
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/OuterObjectWithEnumProperty.java
@@ -0,0 +1,100 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import org.openapitools.client.model.OuterEnumInteger;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+public class OuterObjectWithEnumProperty  {
+  
+  @JsonbProperty("value")
+  private OuterEnumInteger value;
+
+  /**
+   * Get value
+   * @return value
+   **/
+  public OuterEnumInteger getValue() {
+    return value;
+  }
+
+  /**
+   * Set value
+   */
+  public void setValue(OuterEnumInteger value) {
+    this.value = value;
+  }
+
+  public OuterObjectWithEnumProperty value(OuterEnumInteger value) {
+    this.value = value;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    OuterObjectWithEnumProperty outerObjectWithEnumProperty = (OuterObjectWithEnumProperty) o;
+    return Objects.equals(this.value, outerObjectWithEnumProperty.value);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(value);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class OuterObjectWithEnumProperty {\n");
+    
+    sb.append("    value: ").append(toIndentedString(value)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ParentWithNullable.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ParentWithNullable.java
new file mode 100644
index 00000000000..5908510fdb9
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ParentWithNullable.java
@@ -0,0 +1,168 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+@JsonbTypeInfo(key = "type", value = {
+  @JsonbSubtype(alias = "ChildWithNullable", type = ChildWithNullable.class),
+})
+public class ParentWithNullable  {
+  
+  @JsonbTypeSerializer(TypeEnum.Serializer.class)
+  @JsonbTypeDeserializer(TypeEnum.Deserializer.class)
+  public enum TypeEnum {
+
+    CHILD_WITH_NULLABLE(String.valueOf("ChildWithNullable"));
+
+
+    String value;
+
+    TypeEnum (String v) {
+        value = v;
+    }
+
+    public String value() {
+        return value;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(value);
+    }
+
+    public static final class Deserializer implements JsonbDeserializer<TypeEnum> {
+        @Override
+        public TypeEnum deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+            for (TypeEnum b : TypeEnum.values()) {
+                if (String.valueOf(b.value).equals(parser.getString())) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + parser.getString() + "'");
+        }
+    }
+
+    public static final class Serializer implements JsonbSerializer<TypeEnum> {
+        @Override
+        public void serialize(TypeEnum obj, JsonGenerator generator, SerializationContext ctx) {
+            generator.write(obj.value);
+        }
+    }
+  }
+
+  @JsonbTransient
+  private TypeEnum type;
+
+  @JsonbProperty("nullableProperty")
+  private String nullableProperty;
+
+  /**
+   * Get type
+   * @return type
+   **/
+  public TypeEnum getType() {
+    return type;
+  }
+
+  /**
+   * Set type
+   */
+  public void setType(TypeEnum type) {
+    this.type = type;
+  }
+
+  public ParentWithNullable type(TypeEnum type) {
+    this.type = type;
+    return this;
+  }
+
+  /**
+   * Get nullableProperty
+   * @return nullableProperty
+   **/
+  public String getNullableProperty() {
+    return nullableProperty;
+  }
+
+  /**
+   * Set nullableProperty
+   */
+  public void setNullableProperty(String nullableProperty) {
+    this.nullableProperty = nullableProperty;
+  }
+
+  public ParentWithNullable nullableProperty(String nullableProperty) {
+    this.nullableProperty = nullableProperty;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ParentWithNullable parentWithNullable = (ParentWithNullable) o;
+    return Objects.equals(this.type, parentWithNullable.type) &&
+        Objects.equals(this.nullableProperty, parentWithNullable.nullableProperty);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(type, nullableProperty);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ParentWithNullable {\n");
+    
+    sb.append("    type: ").append(toIndentedString(type)).append("\n");
+    sb.append("    nullableProperty: ").append(toIndentedString(nullableProperty)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Pet.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Pet.java
index d2b51d9db1c..89186a67e94 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Pet.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Pet.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -16,7 +16,9 @@ import java.util.Objects;
 import java.util.Arrays;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.LinkedHashSet;
 import java.util.List;
+import java.util.Set;
 import org.openapitools.client.model.Category;
 import org.openapitools.client.model.Tag;
 import java.lang.reflect.Type;
@@ -29,10 +31,11 @@ import jakarta.json.bind.serializer.SerializationContext;
 import jakarta.json.stream.JsonGenerator;
 import jakarta.json.stream.JsonParser;
 import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
 
-/**
-  * A pet for sale in the pet store
-  */
 
 public class Pet  {
   
@@ -46,7 +49,7 @@ public class Pet  {
   private String name;
 
   @JsonbProperty("photoUrls")
-  private List<String> photoUrls = new ArrayList<>();
+  private Set<String> photoUrls = new LinkedHashSet<>();
 
   @JsonbProperty("tags")
   private List<Tag> tags = null;
@@ -163,25 +166,25 @@ public class Pet  {
    * Get photoUrls
    * @return photoUrls
    **/
-  public List<String> getPhotoUrls() {
+  public Set<String> getPhotoUrls() {
     return photoUrls;
   }
 
   /**
    * Set photoUrls
    */
-  public void setPhotoUrls(List<String> photoUrls) {
+  public void setPhotoUrls(Set<String> photoUrls) {
     this.photoUrls = photoUrls;
   }
 
-  public Pet photoUrls(List<String> photoUrls) {
+  public Pet photoUrls(Set<String> photoUrls) {
     this.photoUrls = photoUrls;
     return this;
   }
 
   public Pet addPhotoUrlsItem(String photoUrlsItem) {
     if (this.photoUrls == null) {
-      this.photoUrls = new ArrayList<>();
+      this.photoUrls = new LinkedHashSet<>();
     }
     this.photoUrls.add(photoUrlsItem);
     return this;
@@ -218,9 +221,7 @@ public class Pet  {
   /**
    * pet status in the store
    * @return status
-   * @deprecated
    **/
-  @Deprecated
   public StatusEnum getStatus() {
     return status;
   }
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ReadOnlyFirst.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ReadOnlyFirst.java
new file mode 100644
index 00000000000..05ee12b1e4d
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/ReadOnlyFirst.java
@@ -0,0 +1,123 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+public class ReadOnlyFirst  {
+  
+  @JsonbProperty("bar")
+  private String bar;
+
+  @JsonbProperty("baz")
+  private String baz;
+
+  public ReadOnlyFirst() {
+  }
+
+ @JsonbCreator
+  public ReadOnlyFirst(
+    @JsonbProperty(value = "bar", nillable = true) String bar
+  ) {
+    this.bar = bar;
+  }
+  
+  /**
+   * Get bar
+   * @return bar
+   **/
+  public String getBar() {
+    return bar;
+  }
+
+
+  /**
+   * Get baz
+   * @return baz
+   **/
+  public String getBaz() {
+    return baz;
+  }
+
+  /**
+   * Set baz
+   */
+  public void setBaz(String baz) {
+    this.baz = baz;
+  }
+
+  public ReadOnlyFirst baz(String baz) {
+    this.baz = baz;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ReadOnlyFirst readOnlyFirst = (ReadOnlyFirst) o;
+    return Objects.equals(this.bar, readOnlyFirst.bar) &&
+        Objects.equals(this.baz, readOnlyFirst.baz);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(bar, baz);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ReadOnlyFirst {\n");
+    
+    sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
+    sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/SingleRefType.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/SingleRefType.java
new file mode 100644
index 00000000000..d64747ac30b
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/SingleRefType.java
@@ -0,0 +1,78 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+/**
+ * Gets or Sets SingleRefType
+ */
+@JsonbTypeSerializer(SingleRefType.Serializer.class)
+@JsonbTypeDeserializer(SingleRefType.Deserializer.class)
+public enum SingleRefType {
+  
+  ADMIN("admin"),
+  
+  USER("user");
+
+  private String value;
+
+  SingleRefType(String value) {
+    this.value = value;
+  }
+
+  @Override
+  public String toString() {
+    return String.valueOf(value);
+  }
+
+  public static final class Deserializer implements JsonbDeserializer<SingleRefType> {
+    @Override
+    public SingleRefType deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+      return fromValue(parser.getString());
+    }
+  }
+
+  public static final class Serializer implements JsonbSerializer<SingleRefType> {
+    @Override
+    public void serialize(SingleRefType obj, JsonGenerator generator, SerializationContext ctx) {
+      generator.write(obj.value);
+    }
+  }
+
+  public static SingleRefType fromValue(String text) {
+    for (SingleRefType b : SingleRefType.values()) {
+      if (String.valueOf(b.value).equals(text)) {
+        return b;
+      }
+    }
+    throw new IllegalArgumentException("Unexpected value '" + text + "'");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/SpecialModelName.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/SpecialModelName.java
new file mode 100644
index 00000000000..b4475eaebe5
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/SpecialModelName.java
@@ -0,0 +1,99 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+public class SpecialModelName  {
+  
+  @JsonbProperty("$special[property.name]")
+  private Long $specialPropertyName;
+
+  /**
+   * Get $specialPropertyName
+   * @return $specialPropertyName
+   **/
+  public Long get$SpecialPropertyName() {
+    return $specialPropertyName;
+  }
+
+  /**
+   * Set $specialPropertyName
+   */
+  public void set$SpecialPropertyName(Long $specialPropertyName) {
+    this.$specialPropertyName = $specialPropertyName;
+  }
+
+  public SpecialModelName $specialPropertyName(Long $specialPropertyName) {
+    this.$specialPropertyName = $specialPropertyName;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    SpecialModelName specialModelName = (SpecialModelName) o;
+    return Objects.equals(this.$specialPropertyName, specialModelName.$specialPropertyName);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash($specialPropertyName);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class SpecialModelName {\n");
+    
+    sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Tag.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Tag.java
index 1317a25b177..5bbbbcda804 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Tag.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/Tag.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -24,10 +24,11 @@ import jakarta.json.bind.serializer.SerializationContext;
 import jakarta.json.stream.JsonGenerator;
 import jakarta.json.stream.JsonParser;
 import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
 
-/**
-  * A tag for a pet
-  */
 
 public class Tag  {
   
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/TestInlineFreeformAdditionalPropertiesRequest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/TestInlineFreeformAdditionalPropertiesRequest.java
new file mode 100644
index 00000000000..b2375404c81
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/TestInlineFreeformAdditionalPropertiesRequest.java
@@ -0,0 +1,102 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Map;
+import java.lang.reflect.Type;
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+import jakarta.json.stream.JsonParser;
+import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
+
+
+public class TestInlineFreeformAdditionalPropertiesRequest extends HashMap<String, Object> {
+  
+  @JsonbProperty("someProperty")
+  private String someProperty;
+
+  /**
+   * Get someProperty
+   * @return someProperty
+   **/
+  public String getSomeProperty() {
+    return someProperty;
+  }
+
+  /**
+   * Set someProperty
+   */
+  public void setSomeProperty(String someProperty) {
+    this.someProperty = someProperty;
+  }
+
+  public TestInlineFreeformAdditionalPropertiesRequest someProperty(String someProperty) {
+    this.someProperty = someProperty;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TestInlineFreeformAdditionalPropertiesRequest testInlineFreeformAdditionalPropertiesRequest = (TestInlineFreeformAdditionalPropertiesRequest) o;
+    return Objects.equals(this.someProperty, testInlineFreeformAdditionalPropertiesRequest.someProperty) &&
+        super.equals(o);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(someProperty, super.hashCode());
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TestInlineFreeformAdditionalPropertiesRequest {\n");
+    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+    sb.append("    someProperty: ").append(toIndentedString(someProperty)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/User.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/User.java
index d717a4bd321..426d7d7f0e5 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/User.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/main/java/org/openapitools/client/model/User.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -24,10 +24,11 @@ import jakarta.json.bind.serializer.SerializationContext;
 import jakarta.json.stream.JsonGenerator;
 import jakarta.json.stream.JsonParser;
 import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
 
-/**
-  * A User who is purchasing from the pet store
-  */
 
 public class User  {
   
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/api/AnotherFakeApiTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/api/AnotherFakeApiTest.java
new file mode 100644
index 00000000000..0941a798c10
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/api/AnotherFakeApiTest.java
@@ -0,0 +1,65 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.api;
+
+import org.openapitools.client.model.Client;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.Assertions;
+
+import org.eclipse.microprofile.rest.client.RestClientBuilder;
+
+import java.net.URL;
+import java.net.MalformedURLException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * OpenAPI Petstore Test
+ *
+ * API tests for AnotherFakeApi
+ */
+public class AnotherFakeApiTest {
+
+    private AnotherFakeApi client;
+    private String baseUrl = "http://localhost:9080";
+
+    @BeforeEach
+    public void setup() throws MalformedURLException {
+        // TODO initialize the client
+    }
+
+    
+    /**
+     * To test special tags
+     *
+     * To test special tags and operation ID starting with number
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void call123testSpecialTagsTest() {
+        // TODO: test validations
+        Client client = null;
+        //Client response = api.call123testSpecialTags(client);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/api/DefaultApiTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/api/DefaultApiTest.java
new file mode 100644
index 00000000000..f4e1951dc15
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/api/DefaultApiTest.java
@@ -0,0 +1,60 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.api;
+
+import org.openapitools.client.model.FooGetDefaultResponse;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.Assertions;
+
+import org.eclipse.microprofile.rest.client.RestClientBuilder;
+
+import java.net.URL;
+import java.net.MalformedURLException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * OpenAPI Petstore Test
+ *
+ * API tests for DefaultApi
+ */
+public class DefaultApiTest {
+
+    private DefaultApi client;
+    private String baseUrl = "http://localhost:9080";
+
+    @BeforeEach
+    public void setup() throws MalformedURLException {
+        // TODO initialize the client
+    }
+
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fooGetTest() {
+        // TODO: test validations
+        //FooGetDefaultResponse response = api.fooGet();
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/api/FakeApiTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/api/FakeApiTest.java
new file mode 100644
index 00000000000..26ec6bf6711
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/api/FakeApiTest.java
@@ -0,0 +1,446 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.api;
+
+import java.math.BigDecimal;
+import org.openapitools.client.model.ChildWithNullable;
+import org.openapitools.client.model.Client;
+import java.util.Date;
+import org.openapitools.client.model.EnumClass;
+import org.openapitools.client.model.FakeBigDecimalMap200Response;
+import java.io.File;
+import org.openapitools.client.model.FileSchemaTestClass;
+import org.openapitools.client.model.HealthCheckResult;
+import org.openapitools.client.model.OuterComposite;
+import org.openapitools.client.model.OuterObjectWithEnumProperty;
+import org.openapitools.client.model.Pet;
+import org.openapitools.client.model.TestInlineFreeformAdditionalPropertiesRequest;
+import org.openapitools.client.model.User;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.Assertions;
+
+import org.eclipse.microprofile.rest.client.RestClientBuilder;
+
+import java.net.URL;
+import java.net.MalformedURLException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * OpenAPI Petstore Test
+ *
+ * API tests for FakeApi
+ */
+public class FakeApiTest {
+
+    private FakeApi client;
+    private String baseUrl = "http://localhost:9080";
+
+    @BeforeEach
+    public void setup() throws MalformedURLException {
+        // TODO initialize the client
+    }
+
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fakeBigDecimalMapTest() {
+        // TODO: test validations
+        //FakeBigDecimalMap200Response response = api.fakeBigDecimalMap();
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * Health check endpoint
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fakeHealthGetTest() {
+        // TODO: test validations
+        //HealthCheckResult response = api.fakeHealthGet();
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * test http signature authentication
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fakeHttpSignatureTestTest() {
+        // TODO: test validations
+        Pet pet = null;
+        String query1 = null;
+        String header1 = null;
+        //api.fakeHttpSignatureTest(pet, query1, header1);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fakeOuterBooleanSerializeTest() {
+        // TODO: test validations
+        Boolean body = null;
+        //Boolean response = api.fakeOuterBooleanSerialize(body);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fakeOuterCompositeSerializeTest() {
+        // TODO: test validations
+        OuterComposite outerComposite = null;
+        //OuterComposite response = api.fakeOuterCompositeSerialize(outerComposite);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fakeOuterNumberSerializeTest() {
+        // TODO: test validations
+        BigDecimal body = null;
+        //BigDecimal response = api.fakeOuterNumberSerialize(body);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fakeOuterStringSerializeTest() {
+        // TODO: test validations
+        String body = null;
+        //String response = api.fakeOuterStringSerialize(body);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fakePropertyEnumIntegerSerializeTest() {
+        // TODO: test validations
+        OuterObjectWithEnumProperty outerObjectWithEnumProperty = null;
+        //OuterObjectWithEnumProperty response = api.fakePropertyEnumIntegerSerialize(outerObjectWithEnumProperty);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * test referenced additionalProperties
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testAdditionalPropertiesReferenceTest() {
+        // TODO: test validations
+        Map<String, Object> requestBody = null;
+        //api.testAdditionalPropertiesReference(requestBody);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testBodyWithBinaryTest() {
+        // TODO: test validations
+        org.apache.cxf.jaxrs.ext.multipart.Attachment body = null;
+        //api.testBodyWithBinary(body);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testBodyWithFileSchemaTest() {
+        // TODO: test validations
+        FileSchemaTestClass fileSchemaTestClass = null;
+        //api.testBodyWithFileSchema(fileSchemaTestClass);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testBodyWithQueryParamsTest() {
+        // TODO: test validations
+        String query = null;
+        User user = null;
+        //api.testBodyWithQueryParams(query, user);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * To test \&quot;client\&quot; model
+     *
+     * To test \&quot;client\&quot; model
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testClientModelTest() {
+        // TODO: test validations
+        Client client = null;
+        //Client response = api.testClientModel(client);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * 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 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testEndpointParametersTest() {
+        // TODO: test validations
+        BigDecimal number = null;
+        Double _double = null;
+        String patternWithoutDelimiter = null;
+        byte[] _byte = null;
+        Integer integer = null;
+        Integer int32 = null;
+        Long int64 = null;
+        Float _float = null;
+        String string = null;
+        org.apache.cxf.jaxrs.ext.multipart.Attachment binary = null;
+        Date date = null;
+        Date dateTime = null;
+        String password = null;
+        String paramCallback = null;
+        //api.testEndpointParameters(number, _double, patternWithoutDelimiter, _byte, integer, int32, int64, _float, string, binary, date, dateTime, password, paramCallback);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * To test enum parameters
+     *
+     * To test enum parameters
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testEnumParametersTest() {
+        // TODO: test validations
+        List<String> enumHeaderStringArray = null;
+        String enumHeaderString = null;
+        List<String> enumQueryStringArray = null;
+        String enumQueryString = null;
+        Integer enumQueryInteger = null;
+        Double enumQueryDouble = null;
+        List<EnumClass> enumQueryModelArray = null;
+        List<String> enumFormStringArray = null;
+        String enumFormString = null;
+        //api.testEnumParameters(enumHeaderStringArray, enumHeaderString, enumQueryStringArray, enumQueryString, enumQueryInteger, enumQueryDouble, enumQueryModelArray, enumFormStringArray, enumFormString);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * Fake endpoint to test group parameters (optional)
+     *
+     * Fake endpoint to test group parameters (optional)
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testGroupParametersTest() {
+        // TODO: test validations
+        Integer requiredStringGroup = null;
+        Boolean requiredBooleanGroup = null;
+        Long requiredInt64Group = null;
+        Integer stringGroup = null;
+        Boolean booleanGroup = null;
+        Long int64Group = null;
+        //api.testGroupParameters(requiredStringGroup, requiredBooleanGroup, requiredInt64Group, stringGroup, booleanGroup, int64Group);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * test inline additionalProperties
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testInlineAdditionalPropertiesTest() {
+        // TODO: test validations
+        Map<String, String> requestBody = null;
+        //api.testInlineAdditionalProperties(requestBody);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * test inline free-form additionalProperties
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testInlineFreeformAdditionalPropertiesTest() {
+        // TODO: test validations
+        TestInlineFreeformAdditionalPropertiesRequest testInlineFreeformAdditionalPropertiesRequest = null;
+        //api.testInlineFreeformAdditionalProperties(testInlineFreeformAdditionalPropertiesRequest);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * test json serialization of form data
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testJsonFormDataTest() {
+        // TODO: test validations
+        String param = null;
+        String param2 = null;
+        //api.testJsonFormData(param, param2);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * test nullable parent property
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testNullableTest() {
+        // TODO: test validations
+        ChildWithNullable childWithNullable = null;
+        //api.testNullable(childWithNullable);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testQueryParameterCollectionFormatTest() {
+        // TODO: test validations
+        List<String> pipe = null;
+        List<String> ioutil = null;
+        List<String> http = null;
+        List<String> url = null;
+        List<String> context = null;
+        String allowEmpty = null;
+        Map<String, String> language = null;
+        //api.testQueryParameterCollectionFormat(pipe, ioutil, http, url, context, allowEmpty, language);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * test referenced string map
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testStringMapReferenceTest() {
+        // TODO: test validations
+        Map<String, String> requestBody = null;
+        //api.testStringMapReference(requestBody);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/api/FakeClassnameTags123ApiTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/api/FakeClassnameTags123ApiTest.java
new file mode 100644
index 00000000000..ada30ee8f95
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/api/FakeClassnameTags123ApiTest.java
@@ -0,0 +1,65 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.api;
+
+import org.openapitools.client.model.Client;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.Assertions;
+
+import org.eclipse.microprofile.rest.client.RestClientBuilder;
+
+import java.net.URL;
+import java.net.MalformedURLException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * OpenAPI Petstore Test
+ *
+ * API tests for FakeClassnameTags123Api
+ */
+public class FakeClassnameTags123ApiTest {
+
+    private FakeClassnameTags123Api client;
+    private String baseUrl = "http://localhost:9080";
+
+    @BeforeEach
+    public void setup() throws MalformedURLException {
+        // TODO initialize the client
+    }
+
+    
+    /**
+     * To test class name in snake case
+     *
+     * To test class name in snake case
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testClassnameTest() {
+        // TODO: test validations
+        Client client = null;
+        //Client response = api.testClassname(client);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/AdditionalPropertiesClassTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/AdditionalPropertiesClassTest.java
new file mode 100644
index 00000000000..c33042cf8e7
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/AdditionalPropertiesClassTest.java
@@ -0,0 +1,52 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.HashMap;
+import java.util.Map;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for AdditionalPropertiesClass
+ */
+class AdditionalPropertiesClassTest {
+    private final AdditionalPropertiesClass model = new AdditionalPropertiesClass();
+
+    /**
+     * Model tests for AdditionalPropertiesClass
+     */
+    @Test
+    void testAdditionalPropertiesClass() {
+        // TODO: test AdditionalPropertiesClass
+    }
+
+    /**
+     * Test the property 'mapProperty'
+     */
+    @Test
+    void mapPropertyTest() {
+        // TODO: test mapProperty
+    }
+
+    /**
+     * Test the property 'mapOfMapProperty'
+     */
+    @Test
+    void mapOfMapPropertyTest() {
+        // TODO: test mapOfMapProperty
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/AllOfWithSingleRefTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/AllOfWithSingleRefTest.java
new file mode 100644
index 00000000000..ba32c589b85
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/AllOfWithSingleRefTest.java
@@ -0,0 +1,51 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.openapitools.client.model.SingleRefType;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for AllOfWithSingleRef
+ */
+class AllOfWithSingleRefTest {
+    private final AllOfWithSingleRef model = new AllOfWithSingleRef();
+
+    /**
+     * Model tests for AllOfWithSingleRef
+     */
+    @Test
+    void testAllOfWithSingleRef() {
+        // TODO: test AllOfWithSingleRef
+    }
+
+    /**
+     * Test the property 'username'
+     */
+    @Test
+    void usernameTest() {
+        // TODO: test username
+    }
+
+    /**
+     * Test the property 'singleRefType'
+     */
+    @Test
+    void singleRefTypeTest() {
+        // TODO: test singleRefType
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/AnimalTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/AnimalTest.java
new file mode 100644
index 00000000000..bf91c4a20f0
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/AnimalTest.java
@@ -0,0 +1,50 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for Animal
+ */
+class AnimalTest {
+    private final Animal model = new Animal();
+
+    /**
+     * Model tests for Animal
+     */
+    @Test
+    void testAnimal() {
+        // TODO: test Animal
+    }
+
+    /**
+     * Test the property 'className'
+     */
+    @Test
+    void classNameTest() {
+        // TODO: test className
+    }
+
+    /**
+     * Test the property 'color'
+     */
+    @Test
+    void colorTest() {
+        // TODO: test color
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnlyTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnlyTest.java
new file mode 100644
index 00000000000..4a72072e65e
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnlyTest.java
@@ -0,0 +1,46 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ArrayOfArrayOfNumberOnly
+ */
+class ArrayOfArrayOfNumberOnlyTest {
+    private final ArrayOfArrayOfNumberOnly model = new ArrayOfArrayOfNumberOnly();
+
+    /**
+     * Model tests for ArrayOfArrayOfNumberOnly
+     */
+    @Test
+    void testArrayOfArrayOfNumberOnly() {
+        // TODO: test ArrayOfArrayOfNumberOnly
+    }
+
+    /**
+     * Test the property 'arrayArrayNumber'
+     */
+    @Test
+    void arrayArrayNumberTest() {
+        // TODO: test arrayArrayNumber
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ArrayOfNumberOnlyTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ArrayOfNumberOnlyTest.java
new file mode 100644
index 00000000000..8f6a0038a23
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ArrayOfNumberOnlyTest.java
@@ -0,0 +1,46 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ArrayOfNumberOnly
+ */
+class ArrayOfNumberOnlyTest {
+    private final ArrayOfNumberOnly model = new ArrayOfNumberOnly();
+
+    /**
+     * Model tests for ArrayOfNumberOnly
+     */
+    @Test
+    void testArrayOfNumberOnly() {
+        // TODO: test ArrayOfNumberOnly
+    }
+
+    /**
+     * Test the property 'arrayNumber'
+     */
+    @Test
+    void arrayNumberTest() {
+        // TODO: test arrayNumber
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ArrayTestTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ArrayTestTest.java
new file mode 100644
index 00000000000..0f7d0d93ee7
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ArrayTestTest.java
@@ -0,0 +1,62 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.openapitools.client.model.ReadOnlyFirst;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ArrayTest
+ */
+class ArrayTestTest {
+    private final ArrayTest model = new ArrayTest();
+
+    /**
+     * Model tests for ArrayTest
+     */
+    @Test
+    void testArrayTest() {
+        // TODO: test ArrayTest
+    }
+
+    /**
+     * Test the property 'arrayOfString'
+     */
+    @Test
+    void arrayOfStringTest() {
+        // TODO: test arrayOfString
+    }
+
+    /**
+     * Test the property 'arrayArrayOfInteger'
+     */
+    @Test
+    void arrayArrayOfIntegerTest() {
+        // TODO: test arrayArrayOfInteger
+    }
+
+    /**
+     * Test the property 'arrayArrayOfModel'
+     */
+    @Test
+    void arrayArrayOfModelTest() {
+        // TODO: test arrayArrayOfModel
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/CapitalizationTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/CapitalizationTest.java
new file mode 100644
index 00000000000..cc892e34a39
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/CapitalizationTest.java
@@ -0,0 +1,82 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for Capitalization
+ */
+class CapitalizationTest {
+    private final Capitalization model = new Capitalization();
+
+    /**
+     * Model tests for Capitalization
+     */
+    @Test
+    void testCapitalization() {
+        // TODO: test Capitalization
+    }
+
+    /**
+     * Test the property 'smallCamel'
+     */
+    @Test
+    void smallCamelTest() {
+        // TODO: test smallCamel
+    }
+
+    /**
+     * Test the property 'capitalCamel'
+     */
+    @Test
+    void capitalCamelTest() {
+        // TODO: test capitalCamel
+    }
+
+    /**
+     * Test the property 'smallSnake'
+     */
+    @Test
+    void smallSnakeTest() {
+        // TODO: test smallSnake
+    }
+
+    /**
+     * Test the property 'capitalSnake'
+     */
+    @Test
+    void capitalSnakeTest() {
+        // TODO: test capitalSnake
+    }
+
+    /**
+     * Test the property 'scAETHFlowPoints'
+     */
+    @Test
+    void scAETHFlowPointsTest() {
+        // TODO: test scAETHFlowPoints
+    }
+
+    /**
+     * Test the property 'ATT_NAME'
+     */
+    @Test
+    void ATT_NAMETest() {
+        // TODO: test ATT_NAME
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/CatTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/CatTest.java
new file mode 100644
index 00000000000..c67c1b01b9c
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/CatTest.java
@@ -0,0 +1,59 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.openapitools.client.model.Animal;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for Cat
+ */
+class CatTest {
+    private final Cat model = new Cat();
+
+    /**
+     * Model tests for Cat
+     */
+    @Test
+    void testCat() {
+        // TODO: test Cat
+    }
+
+    /**
+     * Test the property 'className'
+     */
+    @Test
+    void classNameTest() {
+        // TODO: test className
+    }
+
+    /**
+     * Test the property 'color'
+     */
+    @Test
+    void colorTest() {
+        // TODO: test color
+    }
+
+    /**
+     * Test the property 'declawed'
+     */
+    @Test
+    void declawedTest() {
+        // TODO: test declawed
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/CategoryTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/CategoryTest.java
index d0568f97766..caf668f224c 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/CategoryTest.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/CategoryTest.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ChildWithNullableTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ChildWithNullableTest.java
new file mode 100644
index 00000000000..52ee57ee763
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ChildWithNullableTest.java
@@ -0,0 +1,59 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.openapitools.client.model.ParentWithNullable;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ChildWithNullable
+ */
+class ChildWithNullableTest {
+    private final ChildWithNullable model = new ChildWithNullable();
+
+    /**
+     * Model tests for ChildWithNullable
+     */
+    @Test
+    void testChildWithNullable() {
+        // TODO: test ChildWithNullable
+    }
+
+    /**
+     * Test the property 'type'
+     */
+    @Test
+    void typeTest() {
+        // TODO: test type
+    }
+
+    /**
+     * Test the property 'nullableProperty'
+     */
+    @Test
+    void nullablePropertyTest() {
+        // TODO: test nullableProperty
+    }
+
+    /**
+     * Test the property 'otherProperty'
+     */
+    @Test
+    void otherPropertyTest() {
+        // TODO: test otherProperty
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ClassModelTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ClassModelTest.java
new file mode 100644
index 00000000000..2b5a94e3abd
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ClassModelTest.java
@@ -0,0 +1,42 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ClassModel
+ */
+class ClassModelTest {
+    private final ClassModel model = new ClassModel();
+
+    /**
+     * Model tests for ClassModel
+     */
+    @Test
+    void testClassModel() {
+        // TODO: test ClassModel
+    }
+
+    /**
+     * Test the property 'propertyClass'
+     */
+    @Test
+    void propertyClassTest() {
+        // TODO: test propertyClass
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ClientTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ClientTest.java
new file mode 100644
index 00000000000..631cd9ec97f
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ClientTest.java
@@ -0,0 +1,42 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for Client
+ */
+class ClientTest {
+    private final Client model = new Client();
+
+    /**
+     * Model tests for Client
+     */
+    @Test
+    void testClient() {
+        // TODO: test Client
+    }
+
+    /**
+     * Test the property 'client'
+     */
+    @Test
+    void clientTest() {
+        // TODO: test client
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/DeprecatedObjectTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/DeprecatedObjectTest.java
new file mode 100644
index 00000000000..f910877f265
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/DeprecatedObjectTest.java
@@ -0,0 +1,42 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for DeprecatedObject
+ */
+class DeprecatedObjectTest {
+    private final DeprecatedObject model = new DeprecatedObject();
+
+    /**
+     * Model tests for DeprecatedObject
+     */
+    @Test
+    void testDeprecatedObject() {
+        // TODO: test DeprecatedObject
+    }
+
+    /**
+     * Test the property 'name'
+     */
+    @Test
+    void nameTest() {
+        // TODO: test name
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/DogTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/DogTest.java
new file mode 100644
index 00000000000..06550b080ea
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/DogTest.java
@@ -0,0 +1,59 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.openapitools.client.model.Animal;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for Dog
+ */
+class DogTest {
+    private final Dog model = new Dog();
+
+    /**
+     * Model tests for Dog
+     */
+    @Test
+    void testDog() {
+        // TODO: test Dog
+    }
+
+    /**
+     * Test the property 'className'
+     */
+    @Test
+    void classNameTest() {
+        // TODO: test className
+    }
+
+    /**
+     * Test the property 'color'
+     */
+    @Test
+    void colorTest() {
+        // TODO: test color
+    }
+
+    /**
+     * Test the property 'breed'
+     */
+    @Test
+    void breedTest() {
+        // TODO: test breed
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/EnumArraysTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/EnumArraysTest.java
new file mode 100644
index 00000000000..5a4482a48e5
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/EnumArraysTest.java
@@ -0,0 +1,53 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for EnumArrays
+ */
+class EnumArraysTest {
+    private final EnumArrays model = new EnumArrays();
+
+    /**
+     * Model tests for EnumArrays
+     */
+    @Test
+    void testEnumArrays() {
+        // TODO: test EnumArrays
+    }
+
+    /**
+     * Test the property 'justSymbol'
+     */
+    @Test
+    void justSymbolTest() {
+        // TODO: test justSymbol
+    }
+
+    /**
+     * Test the property 'arrayEnum'
+     */
+    @Test
+    void arrayEnumTest() {
+        // TODO: test arrayEnum
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/EnumClassTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/EnumClassTest.java
new file mode 100644
index 00000000000..1b428fce8da
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/EnumClassTest.java
@@ -0,0 +1,32 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for EnumClass
+ */
+class EnumClassTest {
+    /**
+     * Model tests for EnumClass
+     */
+    @Test
+    void testEnumClass() {
+        // TODO: test EnumClass
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/EnumTestTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/EnumTestTest.java
new file mode 100644
index 00000000000..e88f4913fac
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/EnumTestTest.java
@@ -0,0 +1,102 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.openapitools.client.model.OuterEnum;
+import org.openapitools.client.model.OuterEnumDefaultValue;
+import org.openapitools.client.model.OuterEnumInteger;
+import org.openapitools.client.model.OuterEnumIntegerDefaultValue;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for EnumTest
+ */
+class EnumTestTest {
+    private final EnumTest model = new EnumTest();
+
+    /**
+     * Model tests for EnumTest
+     */
+    @Test
+    void testEnumTest() {
+        // TODO: test EnumTest
+    }
+
+    /**
+     * Test the property 'enumString'
+     */
+    @Test
+    void enumStringTest() {
+        // TODO: test enumString
+    }
+
+    /**
+     * Test the property 'enumStringRequired'
+     */
+    @Test
+    void enumStringRequiredTest() {
+        // TODO: test enumStringRequired
+    }
+
+    /**
+     * Test the property 'enumInteger'
+     */
+    @Test
+    void enumIntegerTest() {
+        // TODO: test enumInteger
+    }
+
+    /**
+     * Test the property 'enumNumber'
+     */
+    @Test
+    void enumNumberTest() {
+        // TODO: test enumNumber
+    }
+
+    /**
+     * Test the property 'outerEnum'
+     */
+    @Test
+    void outerEnumTest() {
+        // TODO: test outerEnum
+    }
+
+    /**
+     * Test the property 'outerEnumInteger'
+     */
+    @Test
+    void outerEnumIntegerTest() {
+        // TODO: test outerEnumInteger
+    }
+
+    /**
+     * Test the property 'outerEnumDefaultValue'
+     */
+    @Test
+    void outerEnumDefaultValueTest() {
+        // TODO: test outerEnumDefaultValue
+    }
+
+    /**
+     * Test the property 'outerEnumIntegerDefaultValue'
+     */
+    @Test
+    void outerEnumIntegerDefaultValueTest() {
+        // TODO: test outerEnumIntegerDefaultValue
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/FakeBigDecimalMap200ResponseTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/FakeBigDecimalMap200ResponseTest.java
new file mode 100644
index 00000000000..bf85a56f9cb
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/FakeBigDecimalMap200ResponseTest.java
@@ -0,0 +1,53 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.math.BigDecimal;
+import java.util.HashMap;
+import java.util.Map;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for FakeBigDecimalMap200Response
+ */
+class FakeBigDecimalMap200ResponseTest {
+    private final FakeBigDecimalMap200Response model = new FakeBigDecimalMap200Response();
+
+    /**
+     * Model tests for FakeBigDecimalMap200Response
+     */
+    @Test
+    void testFakeBigDecimalMap200Response() {
+        // TODO: test FakeBigDecimalMap200Response
+    }
+
+    /**
+     * Test the property 'someId'
+     */
+    @Test
+    void someIdTest() {
+        // TODO: test someId
+    }
+
+    /**
+     * Test the property 'someMap'
+     */
+    @Test
+    void someMapTest() {
+        // TODO: test someMap
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/FileSchemaTestClassTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/FileSchemaTestClassTest.java
new file mode 100644
index 00000000000..574f81629d2
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/FileSchemaTestClassTest.java
@@ -0,0 +1,54 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.openapitools.client.model.ModelFile;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for FileSchemaTestClass
+ */
+class FileSchemaTestClassTest {
+    private final FileSchemaTestClass model = new FileSchemaTestClass();
+
+    /**
+     * Model tests for FileSchemaTestClass
+     */
+    @Test
+    void testFileSchemaTestClass() {
+        // TODO: test FileSchemaTestClass
+    }
+
+    /**
+     * Test the property '_file'
+     */
+    @Test
+    void _fileTest() {
+        // TODO: test _file
+    }
+
+    /**
+     * Test the property 'files'
+     */
+    @Test
+    void filesTest() {
+        // TODO: test files
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/FooGetDefaultResponseTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/FooGetDefaultResponseTest.java
new file mode 100644
index 00000000000..db0cbf8b71d
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/FooGetDefaultResponseTest.java
@@ -0,0 +1,43 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.openapitools.client.model.Foo;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for FooGetDefaultResponse
+ */
+class FooGetDefaultResponseTest {
+    private final FooGetDefaultResponse model = new FooGetDefaultResponse();
+
+    /**
+     * Model tests for FooGetDefaultResponse
+     */
+    @Test
+    void testFooGetDefaultResponse() {
+        // TODO: test FooGetDefaultResponse
+    }
+
+    /**
+     * Test the property 'string'
+     */
+    @Test
+    void stringTest() {
+        // TODO: test string
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/FooTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/FooTest.java
new file mode 100644
index 00000000000..85be29d4485
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/FooTest.java
@@ -0,0 +1,42 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for Foo
+ */
+class FooTest {
+    private final Foo model = new Foo();
+
+    /**
+     * Model tests for Foo
+     */
+    @Test
+    void testFoo() {
+        // TODO: test Foo
+    }
+
+    /**
+     * Test the property 'bar'
+     */
+    @Test
+    void barTest() {
+        // TODO: test bar
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/FormatTestTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/FormatTestTest.java
new file mode 100644
index 00000000000..73dab4e2d94
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/FormatTestTest.java
@@ -0,0 +1,166 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.io.File;
+import java.math.BigDecimal;
+import java.util.Date;
+import java.util.UUID;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for FormatTest
+ */
+class FormatTestTest {
+    private final FormatTest model = new FormatTest();
+
+    /**
+     * Model tests for FormatTest
+     */
+    @Test
+    void testFormatTest() {
+        // TODO: test FormatTest
+    }
+
+    /**
+     * Test the property 'integer'
+     */
+    @Test
+    void integerTest() {
+        // TODO: test integer
+    }
+
+    /**
+     * Test the property 'int32'
+     */
+    @Test
+    void int32Test() {
+        // TODO: test int32
+    }
+
+    /**
+     * Test the property 'int64'
+     */
+    @Test
+    void int64Test() {
+        // TODO: test int64
+    }
+
+    /**
+     * Test the property 'number'
+     */
+    @Test
+    void numberTest() {
+        // TODO: test number
+    }
+
+    /**
+     * Test the property '_float'
+     */
+    @Test
+    void _floatTest() {
+        // TODO: test _float
+    }
+
+    /**
+     * Test the property '_double'
+     */
+    @Test
+    void _doubleTest() {
+        // TODO: test _double
+    }
+
+    /**
+     * Test the property 'decimal'
+     */
+    @Test
+    void decimalTest() {
+        // TODO: test decimal
+    }
+
+    /**
+     * Test the property 'string'
+     */
+    @Test
+    void stringTest() {
+        // TODO: test string
+    }
+
+    /**
+     * Test the property '_byte'
+     */
+    @Test
+    void _byteTest() {
+        // TODO: test _byte
+    }
+
+    /**
+     * Test the property 'binary'
+     */
+    @Test
+    void binaryTest() {
+        // TODO: test binary
+    }
+
+    /**
+     * Test the property 'date'
+     */
+    @Test
+    void dateTest() {
+        // TODO: test date
+    }
+
+    /**
+     * Test the property 'dateTime'
+     */
+    @Test
+    void dateTimeTest() {
+        // TODO: test dateTime
+    }
+
+    /**
+     * Test the property 'uuid'
+     */
+    @Test
+    void uuidTest() {
+        // TODO: test uuid
+    }
+
+    /**
+     * Test the property 'password'
+     */
+    @Test
+    void passwordTest() {
+        // TODO: test password
+    }
+
+    /**
+     * Test the property 'patternWithDigits'
+     */
+    @Test
+    void patternWithDigitsTest() {
+        // TODO: test patternWithDigits
+    }
+
+    /**
+     * Test the property 'patternWithDigitsAndDelimiter'
+     */
+    @Test
+    void patternWithDigitsAndDelimiterTest() {
+        // TODO: test patternWithDigitsAndDelimiter
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/HasOnlyReadOnlyTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/HasOnlyReadOnlyTest.java
new file mode 100644
index 00000000000..905c931aab5
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/HasOnlyReadOnlyTest.java
@@ -0,0 +1,50 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for HasOnlyReadOnly
+ */
+class HasOnlyReadOnlyTest {
+    private final HasOnlyReadOnly model = new HasOnlyReadOnly();
+
+    /**
+     * Model tests for HasOnlyReadOnly
+     */
+    @Test
+    void testHasOnlyReadOnly() {
+        // TODO: test HasOnlyReadOnly
+    }
+
+    /**
+     * Test the property 'bar'
+     */
+    @Test
+    void barTest() {
+        // TODO: test bar
+    }
+
+    /**
+     * Test the property 'foo'
+     */
+    @Test
+    void fooTest() {
+        // TODO: test foo
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/HealthCheckResultTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/HealthCheckResultTest.java
new file mode 100644
index 00000000000..6d612952120
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/HealthCheckResultTest.java
@@ -0,0 +1,42 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for HealthCheckResult
+ */
+class HealthCheckResultTest {
+    private final HealthCheckResult model = new HealthCheckResult();
+
+    /**
+     * Model tests for HealthCheckResult
+     */
+    @Test
+    void testHealthCheckResult() {
+        // TODO: test HealthCheckResult
+    }
+
+    /**
+     * Test the property 'nullableMessage'
+     */
+    @Test
+    void nullableMessageTest() {
+        // TODO: test nullableMessage
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/MapTestTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/MapTestTest.java
new file mode 100644
index 00000000000..c1bc74afd09
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/MapTestTest.java
@@ -0,0 +1,68 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.HashMap;
+import java.util.Map;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for MapTest
+ */
+class MapTestTest {
+    private final MapTest model = new MapTest();
+
+    /**
+     * Model tests for MapTest
+     */
+    @Test
+    void testMapTest() {
+        // TODO: test MapTest
+    }
+
+    /**
+     * Test the property 'mapMapOfString'
+     */
+    @Test
+    void mapMapOfStringTest() {
+        // TODO: test mapMapOfString
+    }
+
+    /**
+     * Test the property 'mapOfEnumString'
+     */
+    @Test
+    void mapOfEnumStringTest() {
+        // TODO: test mapOfEnumString
+    }
+
+    /**
+     * Test the property 'directMap'
+     */
+    @Test
+    void directMapTest() {
+        // TODO: test directMap
+    }
+
+    /**
+     * Test the property 'indirectMap'
+     */
+    @Test
+    void indirectMapTest() {
+        // TODO: test indirectMap
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClassTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClassTest.java
new file mode 100644
index 00000000000..0aab1ece1a9
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClassTest.java
@@ -0,0 +1,63 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.UUID;
+import org.openapitools.client.model.Animal;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for MixedPropertiesAndAdditionalPropertiesClass
+ */
+class MixedPropertiesAndAdditionalPropertiesClassTest {
+    private final MixedPropertiesAndAdditionalPropertiesClass model = new MixedPropertiesAndAdditionalPropertiesClass();
+
+    /**
+     * Model tests for MixedPropertiesAndAdditionalPropertiesClass
+     */
+    @Test
+    void testMixedPropertiesAndAdditionalPropertiesClass() {
+        // TODO: test MixedPropertiesAndAdditionalPropertiesClass
+    }
+
+    /**
+     * Test the property 'uuid'
+     */
+    @Test
+    void uuidTest() {
+        // TODO: test uuid
+    }
+
+    /**
+     * Test the property 'dateTime'
+     */
+    @Test
+    void dateTimeTest() {
+        // TODO: test dateTime
+    }
+
+    /**
+     * Test the property 'map'
+     */
+    @Test
+    void mapTest() {
+        // TODO: test map
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/Model200ResponseTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/Model200ResponseTest.java
new file mode 100644
index 00000000000..9a31cadf720
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/Model200ResponseTest.java
@@ -0,0 +1,50 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for Model200Response
+ */
+class Model200ResponseTest {
+    private final Model200Response model = new Model200Response();
+
+    /**
+     * Model tests for Model200Response
+     */
+    @Test
+    void testModel200Response() {
+        // TODO: test Model200Response
+    }
+
+    /**
+     * Test the property 'name'
+     */
+    @Test
+    void nameTest() {
+        // TODO: test name
+    }
+
+    /**
+     * Test the property 'propertyClass'
+     */
+    @Test
+    void propertyClassTest() {
+        // TODO: test propertyClass
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ModelApiResponseTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ModelApiResponseTest.java
index ddfa78c4ac3..45e942fad1a 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ModelApiResponseTest.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ModelApiResponseTest.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ModelFileTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ModelFileTest.java
new file mode 100644
index 00000000000..88a8d0d8f90
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ModelFileTest.java
@@ -0,0 +1,42 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ModelFile
+ */
+class ModelFileTest {
+    private final ModelFile model = new ModelFile();
+
+    /**
+     * Model tests for ModelFile
+     */
+    @Test
+    void testModelFile() {
+        // TODO: test ModelFile
+    }
+
+    /**
+     * Test the property 'sourceURI'
+     */
+    @Test
+    void sourceURITest() {
+        // TODO: test sourceURI
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ModelListTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ModelListTest.java
new file mode 100644
index 00000000000..15f4af11ddb
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ModelListTest.java
@@ -0,0 +1,42 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ModelList
+ */
+class ModelListTest {
+    private final ModelList model = new ModelList();
+
+    /**
+     * Model tests for ModelList
+     */
+    @Test
+    void testModelList() {
+        // TODO: test ModelList
+    }
+
+    /**
+     * Test the property '_123list'
+     */
+    @Test
+    void _123listTest() {
+        // TODO: test _123list
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ModelReturnTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ModelReturnTest.java
new file mode 100644
index 00000000000..40aa9479d1b
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ModelReturnTest.java
@@ -0,0 +1,42 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ModelReturn
+ */
+class ModelReturnTest {
+    private final ModelReturn model = new ModelReturn();
+
+    /**
+     * Model tests for ModelReturn
+     */
+    @Test
+    void testModelReturn() {
+        // TODO: test ModelReturn
+    }
+
+    /**
+     * Test the property '_return'
+     */
+    @Test
+    void _returnTest() {
+        // TODO: test _return
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/NameTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/NameTest.java
new file mode 100644
index 00000000000..fbe1d4d6c03
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/NameTest.java
@@ -0,0 +1,66 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for Name
+ */
+class NameTest {
+    private final Name model = new Name();
+
+    /**
+     * Model tests for Name
+     */
+    @Test
+    void testName() {
+        // TODO: test Name
+    }
+
+    /**
+     * Test the property 'name'
+     */
+    @Test
+    void nameTest() {
+        // TODO: test name
+    }
+
+    /**
+     * Test the property 'snakeCase'
+     */
+    @Test
+    void snakeCaseTest() {
+        // TODO: test snakeCase
+    }
+
+    /**
+     * Test the property 'property'
+     */
+    @Test
+    void propertyTest() {
+        // TODO: test property
+    }
+
+    /**
+     * Test the property '_123number'
+     */
+    @Test
+    void _123numberTest() {
+        // TODO: test _123number
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/NullableClassTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/NullableClassTest.java
new file mode 100644
index 00000000000..2dc4edf27b4
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/NullableClassTest.java
@@ -0,0 +1,137 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for NullableClass
+ */
+class NullableClassTest {
+    private final NullableClass model = new NullableClass();
+
+    /**
+     * Model tests for NullableClass
+     */
+    @Test
+    void testNullableClass() {
+        // TODO: test NullableClass
+    }
+
+    /**
+     * Test the property 'integerProp'
+     */
+    @Test
+    void integerPropTest() {
+        // TODO: test integerProp
+    }
+
+    /**
+     * Test the property 'numberProp'
+     */
+    @Test
+    void numberPropTest() {
+        // TODO: test numberProp
+    }
+
+    /**
+     * Test the property 'booleanProp'
+     */
+    @Test
+    void booleanPropTest() {
+        // TODO: test booleanProp
+    }
+
+    /**
+     * Test the property 'stringProp'
+     */
+    @Test
+    void stringPropTest() {
+        // TODO: test stringProp
+    }
+
+    /**
+     * Test the property 'dateProp'
+     */
+    @Test
+    void datePropTest() {
+        // TODO: test dateProp
+    }
+
+    /**
+     * Test the property 'datetimeProp'
+     */
+    @Test
+    void datetimePropTest() {
+        // TODO: test datetimeProp
+    }
+
+    /**
+     * Test the property 'arrayNullableProp'
+     */
+    @Test
+    void arrayNullablePropTest() {
+        // TODO: test arrayNullableProp
+    }
+
+    /**
+     * Test the property 'arrayAndItemsNullableProp'
+     */
+    @Test
+    void arrayAndItemsNullablePropTest() {
+        // TODO: test arrayAndItemsNullableProp
+    }
+
+    /**
+     * Test the property 'arrayItemsNullable'
+     */
+    @Test
+    void arrayItemsNullableTest() {
+        // TODO: test arrayItemsNullable
+    }
+
+    /**
+     * Test the property 'objectNullableProp'
+     */
+    @Test
+    void objectNullablePropTest() {
+        // TODO: test objectNullableProp
+    }
+
+    /**
+     * Test the property 'objectAndItemsNullableProp'
+     */
+    @Test
+    void objectAndItemsNullablePropTest() {
+        // TODO: test objectAndItemsNullableProp
+    }
+
+    /**
+     * Test the property 'objectItemsNullable'
+     */
+    @Test
+    void objectItemsNullableTest() {
+        // TODO: test objectItemsNullable
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/NumberOnlyTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/NumberOnlyTest.java
new file mode 100644
index 00000000000..399dec94c67
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/NumberOnlyTest.java
@@ -0,0 +1,43 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.math.BigDecimal;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for NumberOnly
+ */
+class NumberOnlyTest {
+    private final NumberOnly model = new NumberOnly();
+
+    /**
+     * Model tests for NumberOnly
+     */
+    @Test
+    void testNumberOnly() {
+        // TODO: test NumberOnly
+    }
+
+    /**
+     * Test the property 'justNumber'
+     */
+    @Test
+    void justNumberTest() {
+        // TODO: test justNumber
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ObjectWithDeprecatedFieldsTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ObjectWithDeprecatedFieldsTest.java
new file mode 100644
index 00000000000..360689566a2
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ObjectWithDeprecatedFieldsTest.java
@@ -0,0 +1,71 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.openapitools.client.model.DeprecatedObject;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ObjectWithDeprecatedFields
+ */
+class ObjectWithDeprecatedFieldsTest {
+    private final ObjectWithDeprecatedFields model = new ObjectWithDeprecatedFields();
+
+    /**
+     * Model tests for ObjectWithDeprecatedFields
+     */
+    @Test
+    void testObjectWithDeprecatedFields() {
+        // TODO: test ObjectWithDeprecatedFields
+    }
+
+    /**
+     * Test the property 'uuid'
+     */
+    @Test
+    void uuidTest() {
+        // TODO: test uuid
+    }
+
+    /**
+     * Test the property 'id'
+     */
+    @Test
+    void idTest() {
+        // TODO: test id
+    }
+
+    /**
+     * Test the property 'deprecatedRef'
+     */
+    @Test
+    void deprecatedRefTest() {
+        // TODO: test deprecatedRef
+    }
+
+    /**
+     * Test the property 'bars'
+     */
+    @Test
+    void barsTest() {
+        // TODO: test bars
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/OrderTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/OrderTest.java
index 0d23109bd82..d7c9bb66162 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/OrderTest.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/OrderTest.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/OuterCompositeTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/OuterCompositeTest.java
new file mode 100644
index 00000000000..7a906cb31cd
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/OuterCompositeTest.java
@@ -0,0 +1,59 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.math.BigDecimal;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for OuterComposite
+ */
+class OuterCompositeTest {
+    private final OuterComposite model = new OuterComposite();
+
+    /**
+     * Model tests for OuterComposite
+     */
+    @Test
+    void testOuterComposite() {
+        // TODO: test OuterComposite
+    }
+
+    /**
+     * Test the property 'myNumber'
+     */
+    @Test
+    void myNumberTest() {
+        // TODO: test myNumber
+    }
+
+    /**
+     * Test the property 'myString'
+     */
+    @Test
+    void myStringTest() {
+        // TODO: test myString
+    }
+
+    /**
+     * Test the property 'myBoolean'
+     */
+    @Test
+    void myBooleanTest() {
+        // TODO: test myBoolean
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/OuterEnumDefaultValueTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/OuterEnumDefaultValueTest.java
new file mode 100644
index 00000000000..e492f3e0ff6
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/OuterEnumDefaultValueTest.java
@@ -0,0 +1,32 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for OuterEnumDefaultValue
+ */
+class OuterEnumDefaultValueTest {
+    /**
+     * Model tests for OuterEnumDefaultValue
+     */
+    @Test
+    void testOuterEnumDefaultValue() {
+        // TODO: test OuterEnumDefaultValue
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/OuterEnumIntegerDefaultValueTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/OuterEnumIntegerDefaultValueTest.java
new file mode 100644
index 00000000000..d72626405cc
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/OuterEnumIntegerDefaultValueTest.java
@@ -0,0 +1,32 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for OuterEnumIntegerDefaultValue
+ */
+class OuterEnumIntegerDefaultValueTest {
+    /**
+     * Model tests for OuterEnumIntegerDefaultValue
+     */
+    @Test
+    void testOuterEnumIntegerDefaultValue() {
+        // TODO: test OuterEnumIntegerDefaultValue
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/OuterEnumIntegerTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/OuterEnumIntegerTest.java
new file mode 100644
index 00000000000..b7dd55cda62
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/OuterEnumIntegerTest.java
@@ -0,0 +1,32 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for OuterEnumInteger
+ */
+class OuterEnumIntegerTest {
+    /**
+     * Model tests for OuterEnumInteger
+     */
+    @Test
+    void testOuterEnumInteger() {
+        // TODO: test OuterEnumInteger
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/OuterEnumTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/OuterEnumTest.java
new file mode 100644
index 00000000000..1116901010b
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/OuterEnumTest.java
@@ -0,0 +1,32 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for OuterEnum
+ */
+class OuterEnumTest {
+    /**
+     * Model tests for OuterEnum
+     */
+    @Test
+    void testOuterEnum() {
+        // TODO: test OuterEnum
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/OuterObjectWithEnumPropertyTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/OuterObjectWithEnumPropertyTest.java
new file mode 100644
index 00000000000..f773156fb5e
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/OuterObjectWithEnumPropertyTest.java
@@ -0,0 +1,43 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.openapitools.client.model.OuterEnumInteger;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for OuterObjectWithEnumProperty
+ */
+class OuterObjectWithEnumPropertyTest {
+    private final OuterObjectWithEnumProperty model = new OuterObjectWithEnumProperty();
+
+    /**
+     * Model tests for OuterObjectWithEnumProperty
+     */
+    @Test
+    void testOuterObjectWithEnumProperty() {
+        // TODO: test OuterObjectWithEnumProperty
+    }
+
+    /**
+     * Test the property 'value'
+     */
+    @Test
+    void valueTest() {
+        // TODO: test value
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ParentWithNullableTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ParentWithNullableTest.java
new file mode 100644
index 00000000000..e2a5a37b6cb
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ParentWithNullableTest.java
@@ -0,0 +1,50 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ParentWithNullable
+ */
+class ParentWithNullableTest {
+    private final ParentWithNullable model = new ParentWithNullable();
+
+    /**
+     * Model tests for ParentWithNullable
+     */
+    @Test
+    void testParentWithNullable() {
+        // TODO: test ParentWithNullable
+    }
+
+    /**
+     * Test the property 'type'
+     */
+    @Test
+    void typeTest() {
+        // TODO: test type
+    }
+
+    /**
+     * Test the property 'nullableProperty'
+     */
+    @Test
+    void nullablePropertyTest() {
+        // TODO: test nullableProperty
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/PetTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/PetTest.java
index e939e3b1d45..89a08d731f6 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/PetTest.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/PetTest.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -15,7 +15,9 @@ package org.openapitools.client.model;
 
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.LinkedHashSet;
 import java.util.List;
+import java.util.Set;
 import org.openapitools.client.model.Category;
 import org.openapitools.client.model.Tag;
 import org.junit.jupiter.api.Assertions;
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ReadOnlyFirstTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ReadOnlyFirstTest.java
new file mode 100644
index 00000000000..b3205f14720
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/ReadOnlyFirstTest.java
@@ -0,0 +1,50 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ReadOnlyFirst
+ */
+class ReadOnlyFirstTest {
+    private final ReadOnlyFirst model = new ReadOnlyFirst();
+
+    /**
+     * Model tests for ReadOnlyFirst
+     */
+    @Test
+    void testReadOnlyFirst() {
+        // TODO: test ReadOnlyFirst
+    }
+
+    /**
+     * Test the property 'bar'
+     */
+    @Test
+    void barTest() {
+        // TODO: test bar
+    }
+
+    /**
+     * Test the property 'baz'
+     */
+    @Test
+    void bazTest() {
+        // TODO: test baz
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/SingleRefTypeTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/SingleRefTypeTest.java
new file mode 100644
index 00000000000..210c2a45037
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/SingleRefTypeTest.java
@@ -0,0 +1,32 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for SingleRefType
+ */
+class SingleRefTypeTest {
+    /**
+     * Model tests for SingleRefType
+     */
+    @Test
+    void testSingleRefType() {
+        // TODO: test SingleRefType
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/SpecialModelNameTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/SpecialModelNameTest.java
new file mode 100644
index 00000000000..07c9acddd15
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/SpecialModelNameTest.java
@@ -0,0 +1,42 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for SpecialModelName
+ */
+class SpecialModelNameTest {
+    private final SpecialModelName model = new SpecialModelName();
+
+    /**
+     * Model tests for SpecialModelName
+     */
+    @Test
+    void testSpecialModelName() {
+        // TODO: test SpecialModelName
+    }
+
+    /**
+     * Test the property '$specialPropertyName'
+     */
+    @Test
+    void $specialPropertyNameTest() {
+        // TODO: test $specialPropertyName
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/TagTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/TagTest.java
index 5131a8a3e88..cfbaea84bdd 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/TagTest.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/TagTest.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/TestInlineFreeformAdditionalPropertiesRequestTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/TestInlineFreeformAdditionalPropertiesRequestTest.java
new file mode 100644
index 00000000000..011ed8b26d4
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/TestInlineFreeformAdditionalPropertiesRequestTest.java
@@ -0,0 +1,44 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.HashMap;
+import java.util.Map;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for TestInlineFreeformAdditionalPropertiesRequest
+ */
+class TestInlineFreeformAdditionalPropertiesRequestTest {
+    private final TestInlineFreeformAdditionalPropertiesRequest model = new TestInlineFreeformAdditionalPropertiesRequest();
+
+    /**
+     * Model tests for TestInlineFreeformAdditionalPropertiesRequest
+     */
+    @Test
+    void testTestInlineFreeformAdditionalPropertiesRequest() {
+        // TODO: test TestInlineFreeformAdditionalPropertiesRequest
+    }
+
+    /**
+     * Test the property 'someProperty'
+     */
+    @Test
+    void somePropertyTest() {
+        // TODO: test someProperty
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/UserTest.java b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/UserTest.java
index d0d84b12705..7065b494b84 100644
--- a/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/UserTest.java
+++ b/samples/client/petstore/java/microprofile-rest-client-3.0/src/test/java/org/openapitools/client/model/UserTest.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
diff --git a/samples/client/petstore/java/microprofile-rest-client-mutiny/src/main/java/org/openapitools/client/model/Category.java b/samples/client/petstore/java/microprofile-rest-client-mutiny/src/main/java/org/openapitools/client/model/Category.java
index 5a53099479e..dbfb7aa3cd8 100644
--- a/samples/client/petstore/java/microprofile-rest-client-mutiny/src/main/java/org/openapitools/client/model/Category.java
+++ b/samples/client/petstore/java/microprofile-rest-client-mutiny/src/main/java/org/openapitools/client/model/Category.java
@@ -24,6 +24,7 @@ import javax.json.bind.serializer.SerializationContext;
 import javax.json.stream.JsonGenerator;
 import javax.json.stream.JsonParser;
 import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
 
 /**
   * A category for a pet
diff --git a/samples/client/petstore/java/microprofile-rest-client-mutiny/src/main/java/org/openapitools/client/model/ModelApiResponse.java b/samples/client/petstore/java/microprofile-rest-client-mutiny/src/main/java/org/openapitools/client/model/ModelApiResponse.java
index 6926a2e2270..f2058433f57 100644
--- a/samples/client/petstore/java/microprofile-rest-client-mutiny/src/main/java/org/openapitools/client/model/ModelApiResponse.java
+++ b/samples/client/petstore/java/microprofile-rest-client-mutiny/src/main/java/org/openapitools/client/model/ModelApiResponse.java
@@ -24,6 +24,7 @@ import javax.json.bind.serializer.SerializationContext;
 import javax.json.stream.JsonGenerator;
 import javax.json.stream.JsonParser;
 import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
 
 /**
   * Describes the result of uploading an image resource
diff --git a/samples/client/petstore/java/microprofile-rest-client-mutiny/src/main/java/org/openapitools/client/model/Order.java b/samples/client/petstore/java/microprofile-rest-client-mutiny/src/main/java/org/openapitools/client/model/Order.java
index 4f743c78a6c..2ca6b66700f 100644
--- a/samples/client/petstore/java/microprofile-rest-client-mutiny/src/main/java/org/openapitools/client/model/Order.java
+++ b/samples/client/petstore/java/microprofile-rest-client-mutiny/src/main/java/org/openapitools/client/model/Order.java
@@ -25,6 +25,7 @@ import javax.json.bind.serializer.SerializationContext;
 import javax.json.stream.JsonGenerator;
 import javax.json.stream.JsonParser;
 import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
 
 /**
   * An order for a pets from the pet store
diff --git a/samples/client/petstore/java/microprofile-rest-client-mutiny/src/main/java/org/openapitools/client/model/Pet.java b/samples/client/petstore/java/microprofile-rest-client-mutiny/src/main/java/org/openapitools/client/model/Pet.java
index 03b5f5cd88f..fc10762ad1d 100644
--- a/samples/client/petstore/java/microprofile-rest-client-mutiny/src/main/java/org/openapitools/client/model/Pet.java
+++ b/samples/client/petstore/java/microprofile-rest-client-mutiny/src/main/java/org/openapitools/client/model/Pet.java
@@ -29,6 +29,7 @@ import javax.json.bind.serializer.SerializationContext;
 import javax.json.stream.JsonGenerator;
 import javax.json.stream.JsonParser;
 import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
 
 /**
   * A pet for sale in the pet store
diff --git a/samples/client/petstore/java/microprofile-rest-client-mutiny/src/main/java/org/openapitools/client/model/Tag.java b/samples/client/petstore/java/microprofile-rest-client-mutiny/src/main/java/org/openapitools/client/model/Tag.java
index 5bb307506c9..a15e2acf85a 100644
--- a/samples/client/petstore/java/microprofile-rest-client-mutiny/src/main/java/org/openapitools/client/model/Tag.java
+++ b/samples/client/petstore/java/microprofile-rest-client-mutiny/src/main/java/org/openapitools/client/model/Tag.java
@@ -24,6 +24,7 @@ import javax.json.bind.serializer.SerializationContext;
 import javax.json.stream.JsonGenerator;
 import javax.json.stream.JsonParser;
 import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
 
 /**
   * A tag for a pet
diff --git a/samples/client/petstore/java/microprofile-rest-client-mutiny/src/main/java/org/openapitools/client/model/User.java b/samples/client/petstore/java/microprofile-rest-client-mutiny/src/main/java/org/openapitools/client/model/User.java
index 1542e3dfc58..c59ea245f6f 100644
--- a/samples/client/petstore/java/microprofile-rest-client-mutiny/src/main/java/org/openapitools/client/model/User.java
+++ b/samples/client/petstore/java/microprofile-rest-client-mutiny/src/main/java/org/openapitools/client/model/User.java
@@ -24,6 +24,7 @@ import javax.json.bind.serializer.SerializationContext;
 import javax.json.stream.JsonGenerator;
 import javax.json.stream.JsonParser;
 import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
 
 /**
   * A User who is purchasing from the pet store
diff --git a/samples/client/petstore/java/microprofile-rest-client-outer-enum/src/main/java/org/openapitools/client/model/Cat.java b/samples/client/petstore/java/microprofile-rest-client-outer-enum/src/main/java/org/openapitools/client/model/Cat.java
index 1b03fa72cdd..1166644d566 100644
--- a/samples/client/petstore/java/microprofile-rest-client-outer-enum/src/main/java/org/openapitools/client/model/Cat.java
+++ b/samples/client/petstore/java/microprofile-rest-client-outer-enum/src/main/java/org/openapitools/client/model/Cat.java
@@ -25,6 +25,7 @@ import javax.json.bind.serializer.SerializationContext;
 import javax.json.stream.JsonGenerator;
 import javax.json.stream.JsonParser;
 import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
 
 
 public class Cat  {
diff --git a/samples/client/petstore/java/microprofile-rest-client-outer-enum/src/main/java/org/openapitools/client/model/Dog.java b/samples/client/petstore/java/microprofile-rest-client-outer-enum/src/main/java/org/openapitools/client/model/Dog.java
index 7eb427a23a3..255f4ee9ea3 100644
--- a/samples/client/petstore/java/microprofile-rest-client-outer-enum/src/main/java/org/openapitools/client/model/Dog.java
+++ b/samples/client/petstore/java/microprofile-rest-client-outer-enum/src/main/java/org/openapitools/client/model/Dog.java
@@ -25,6 +25,7 @@ import javax.json.bind.serializer.SerializationContext;
 import javax.json.stream.JsonGenerator;
 import javax.json.stream.JsonParser;
 import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
 
 
 public class Dog  {
diff --git a/samples/client/petstore/java/microprofile-rest-client-outer-enum/src/main/java/org/openapitools/client/model/Status.java b/samples/client/petstore/java/microprofile-rest-client-outer-enum/src/main/java/org/openapitools/client/model/Status.java
index 7d56e258828..f75b74510be 100644
--- a/samples/client/petstore/java/microprofile-rest-client-outer-enum/src/main/java/org/openapitools/client/model/Status.java
+++ b/samples/client/petstore/java/microprofile-rest-client-outer-enum/src/main/java/org/openapitools/client/model/Status.java
@@ -24,6 +24,7 @@ import javax.json.bind.serializer.SerializationContext;
 import javax.json.stream.JsonGenerator;
 import javax.json.stream.JsonParser;
 import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
 
 
 /**
diff --git a/samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/pom.xml b/samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/pom.xml
index 3e687e53833..ec0b6c7eb2b 100644
--- a/samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/pom.xml
+++ b/samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/pom.xml
@@ -160,7 +160,7 @@
     <jackson.jaxrs.version>2.17.1</jackson.jaxrs.version>
     <jakarta.activation.version>2.1.0</jakarta.activation.version>
     <jakarta.annotation.version>2.0.0</jakarta.annotation.version>
-    <jakarta.json.bind.version>2.0.0</jakarta.json.bind.version>
+    <jakarta.json.bind.version>3.0.0</jakarta.json.bind.version>
     <jakarta.json.version>2.0.1</jakarta.json.version>
     <jakarta.ws.rs.version>3.0.0</jakarta.ws.rs.version>
     <jakarta.xml.bind.version>3.0.1</jakarta.xml.bind.version>
diff --git a/samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/src/main/java/org/openapitools/client/model/Category.java b/samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/src/main/java/org/openapitools/client/model/Category.java
index d7d5dca2bc6..6effb8514c2 100644
--- a/samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/src/main/java/org/openapitools/client/model/Category.java
+++ b/samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/src/main/java/org/openapitools/client/model/Category.java
@@ -24,6 +24,10 @@ import jakarta.json.bind.serializer.SerializationContext;
 import jakarta.json.stream.JsonGenerator;
 import jakarta.json.stream.JsonParser;
 import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
 
 /**
   * A category for a pet
diff --git a/samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/src/main/java/org/openapitools/client/model/ModelApiResponse.java b/samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/src/main/java/org/openapitools/client/model/ModelApiResponse.java
index 2791024ba29..fc140069625 100644
--- a/samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/src/main/java/org/openapitools/client/model/ModelApiResponse.java
+++ b/samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/src/main/java/org/openapitools/client/model/ModelApiResponse.java
@@ -24,6 +24,10 @@ import jakarta.json.bind.serializer.SerializationContext;
 import jakarta.json.stream.JsonGenerator;
 import jakarta.json.stream.JsonParser;
 import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
 
 /**
   * Describes the result of uploading an image resource
diff --git a/samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/src/main/java/org/openapitools/client/model/Order.java b/samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/src/main/java/org/openapitools/client/model/Order.java
index d7e654ce3a9..06c78288e18 100644
--- a/samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/src/main/java/org/openapitools/client/model/Order.java
+++ b/samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/src/main/java/org/openapitools/client/model/Order.java
@@ -25,6 +25,10 @@ import jakarta.json.bind.serializer.SerializationContext;
 import jakarta.json.stream.JsonGenerator;
 import jakarta.json.stream.JsonParser;
 import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
 
 /**
   * An order for a pets from the pet store
diff --git a/samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/src/main/java/org/openapitools/client/model/Pet.java b/samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/src/main/java/org/openapitools/client/model/Pet.java
index d2b51d9db1c..28dd90e2ebd 100644
--- a/samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/src/main/java/org/openapitools/client/model/Pet.java
+++ b/samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/src/main/java/org/openapitools/client/model/Pet.java
@@ -29,6 +29,10 @@ import jakarta.json.bind.serializer.SerializationContext;
 import jakarta.json.stream.JsonGenerator;
 import jakarta.json.stream.JsonParser;
 import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
 
 /**
   * A pet for sale in the pet store
diff --git a/samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/src/main/java/org/openapitools/client/model/Tag.java b/samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/src/main/java/org/openapitools/client/model/Tag.java
index 1317a25b177..a12166bacce 100644
--- a/samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/src/main/java/org/openapitools/client/model/Tag.java
+++ b/samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/src/main/java/org/openapitools/client/model/Tag.java
@@ -24,6 +24,10 @@ import jakarta.json.bind.serializer.SerializationContext;
 import jakarta.json.stream.JsonGenerator;
 import jakarta.json.stream.JsonParser;
 import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
 
 /**
   * A tag for a pet
diff --git a/samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/src/main/java/org/openapitools/client/model/User.java b/samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/src/main/java/org/openapitools/client/model/User.java
index d717a4bd321..f6676366006 100644
--- a/samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/src/main/java/org/openapitools/client/model/User.java
+++ b/samples/client/petstore/java/microprofile-rest-client-with-useSingleRequestParameter/src/main/java/org/openapitools/client/model/User.java
@@ -24,6 +24,10 @@ import jakarta.json.bind.serializer.SerializationContext;
 import jakarta.json.stream.JsonGenerator;
 import jakarta.json.stream.JsonParser;
 import jakarta.json.bind.annotation.JsonbProperty;
+import jakarta.json.bind.annotation.JsonbSubtype;
+import jakarta.json.bind.annotation.JsonbTransient;
+import jakarta.json.bind.annotation.JsonbTypeInfo;
+import jakarta.json.bind.annotation.JsonbCreator;
 
 /**
   * A User who is purchasing from the pet store
diff --git a/samples/client/petstore/java/microprofile-rest-client/.openapi-generator/FILES b/samples/client/petstore/java/microprofile-rest-client/.openapi-generator/FILES
index ae145903e52..c2568cfe301 100644
--- a/samples/client/petstore/java/microprofile-rest-client/.openapi-generator/FILES
+++ b/samples/client/petstore/java/microprofile-rest-client/.openapi-generator/FILES
@@ -1,22 +1,118 @@
 README.md
+docs/AdditionalPropertiesClass.md
+docs/AllOfWithSingleRef.md
+docs/Animal.md
+docs/AnotherFakeApi.md
+docs/ArrayOfArrayOfNumberOnly.md
+docs/ArrayOfNumberOnly.md
+docs/ArrayTest.md
+docs/Capitalization.md
+docs/Cat.md
 docs/Category.md
+docs/ChildWithNullable.md
+docs/ClassModel.md
+docs/Client.md
+docs/DefaultApi.md
+docs/DeprecatedObject.md
+docs/Dog.md
+docs/EnumArrays.md
+docs/EnumClass.md
+docs/EnumTest.md
+docs/FakeApi.md
+docs/FakeBigDecimalMap200Response.md
+docs/FakeClassnameTags123Api.md
+docs/FileSchemaTestClass.md
+docs/Foo.md
+docs/FooGetDefaultResponse.md
+docs/FormatTest.md
+docs/HasOnlyReadOnly.md
+docs/HealthCheckResult.md
+docs/MapTest.md
+docs/MixedPropertiesAndAdditionalPropertiesClass.md
+docs/Model200Response.md
 docs/ModelApiResponse.md
+docs/ModelFile.md
+docs/ModelList.md
+docs/ModelReturn.md
+docs/Name.md
+docs/NullableClass.md
+docs/NumberOnly.md
+docs/ObjectWithDeprecatedFields.md
 docs/Order.md
+docs/OuterComposite.md
+docs/OuterEnum.md
+docs/OuterEnumDefaultValue.md
+docs/OuterEnumInteger.md
+docs/OuterEnumIntegerDefaultValue.md
+docs/OuterObjectWithEnumProperty.md
+docs/ParentWithNullable.md
 docs/Pet.md
 docs/PetApi.md
+docs/ReadOnlyFirst.md
+docs/SingleRefType.md
+docs/SpecialModelName.md
 docs/StoreApi.md
 docs/Tag.md
+docs/TestInlineFreeformAdditionalPropertiesRequest.md
 docs/User.md
 docs/UserApi.md
 pom.xml
+src/main/java/org/openapitools/client/api/AnotherFakeApi.java
 src/main/java/org/openapitools/client/api/ApiException.java
 src/main/java/org/openapitools/client/api/ApiExceptionMapper.java
+src/main/java/org/openapitools/client/api/DefaultApi.java
+src/main/java/org/openapitools/client/api/FakeApi.java
+src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
 src/main/java/org/openapitools/client/api/PetApi.java
 src/main/java/org/openapitools/client/api/StoreApi.java
 src/main/java/org/openapitools/client/api/UserApi.java
+src/main/java/org/openapitools/client/model/AdditionalPropertiesClass.java
+src/main/java/org/openapitools/client/model/AllOfWithSingleRef.java
+src/main/java/org/openapitools/client/model/Animal.java
+src/main/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnly.java
+src/main/java/org/openapitools/client/model/ArrayOfNumberOnly.java
+src/main/java/org/openapitools/client/model/ArrayTest.java
+src/main/java/org/openapitools/client/model/Capitalization.java
+src/main/java/org/openapitools/client/model/Cat.java
 src/main/java/org/openapitools/client/model/Category.java
+src/main/java/org/openapitools/client/model/ChildWithNullable.java
+src/main/java/org/openapitools/client/model/ClassModel.java
+src/main/java/org/openapitools/client/model/Client.java
+src/main/java/org/openapitools/client/model/DeprecatedObject.java
+src/main/java/org/openapitools/client/model/Dog.java
+src/main/java/org/openapitools/client/model/EnumArrays.java
+src/main/java/org/openapitools/client/model/EnumClass.java
+src/main/java/org/openapitools/client/model/EnumTest.java
+src/main/java/org/openapitools/client/model/FakeBigDecimalMap200Response.java
+src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
+src/main/java/org/openapitools/client/model/Foo.java
+src/main/java/org/openapitools/client/model/FooGetDefaultResponse.java
+src/main/java/org/openapitools/client/model/FormatTest.java
+src/main/java/org/openapitools/client/model/HasOnlyReadOnly.java
+src/main/java/org/openapitools/client/model/HealthCheckResult.java
+src/main/java/org/openapitools/client/model/MapTest.java
+src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
+src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelFile.java
+src/main/java/org/openapitools/client/model/ModelList.java
+src/main/java/org/openapitools/client/model/ModelReturn.java
+src/main/java/org/openapitools/client/model/Name.java
+src/main/java/org/openapitools/client/model/NullableClass.java
+src/main/java/org/openapitools/client/model/NumberOnly.java
+src/main/java/org/openapitools/client/model/ObjectWithDeprecatedFields.java
 src/main/java/org/openapitools/client/model/Order.java
+src/main/java/org/openapitools/client/model/OuterComposite.java
+src/main/java/org/openapitools/client/model/OuterEnum.java
+src/main/java/org/openapitools/client/model/OuterEnumDefaultValue.java
+src/main/java/org/openapitools/client/model/OuterEnumInteger.java
+src/main/java/org/openapitools/client/model/OuterEnumIntegerDefaultValue.java
+src/main/java/org/openapitools/client/model/OuterObjectWithEnumProperty.java
+src/main/java/org/openapitools/client/model/ParentWithNullable.java
 src/main/java/org/openapitools/client/model/Pet.java
+src/main/java/org/openapitools/client/model/ReadOnlyFirst.java
+src/main/java/org/openapitools/client/model/SingleRefType.java
+src/main/java/org/openapitools/client/model/SpecialModelName.java
 src/main/java/org/openapitools/client/model/Tag.java
+src/main/java/org/openapitools/client/model/TestInlineFreeformAdditionalPropertiesRequest.java
 src/main/java/org/openapitools/client/model/User.java
diff --git a/samples/client/petstore/java/microprofile-rest-client/README.md b/samples/client/petstore/java/microprofile-rest-client/README.md
index 4c3e40a34b5..1cb83709623 100644
--- a/samples/client/petstore/java/microprofile-rest-client/README.md
+++ b/samples/client/petstore/java/microprofile-rest-client/README.md
@@ -1,6 +1,6 @@
 # OpenAPI Petstore - MicroProfile Rest Client & MicroProfile Server
 
-This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
 
 ## Overview
 This API client was generated by the [OpenAPI Generator](https://openapi-generator.tech) project.
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/AdditionalPropertiesClass.md b/samples/client/petstore/java/microprofile-rest-client/docs/AdditionalPropertiesClass.md
new file mode 100644
index 00000000000..fe69a56eebf
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/AdditionalPropertiesClass.md
@@ -0,0 +1,14 @@
+
+
+# AdditionalPropertiesClass
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**mapProperty** | **Map&lt;String, String&gt;** |  |  [optional] |
+|**mapOfMapProperty** | **Map&lt;String, Map&lt;String, String&gt;&gt;** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/AllOfWithSingleRef.md b/samples/client/petstore/java/microprofile-rest-client/docs/AllOfWithSingleRef.md
new file mode 100644
index 00000000000..4146d56a372
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/AllOfWithSingleRef.md
@@ -0,0 +1,14 @@
+
+
+# AllOfWithSingleRef
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**username** | **String** |  |  [optional] |
+|**singleRefType** | **SingleRefType** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/Animal.md b/samples/client/petstore/java/microprofile-rest-client/docs/Animal.md
new file mode 100644
index 00000000000..d9b32f14c88
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/Animal.md
@@ -0,0 +1,14 @@
+
+
+# Animal
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**className** | **String** |  |  |
+|**color** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/AnotherFakeApi.md b/samples/client/petstore/java/microprofile-rest-client/docs/AnotherFakeApi.md
new file mode 100644
index 00000000000..73c966d2d54
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/AnotherFakeApi.md
@@ -0,0 +1,75 @@
+# AnotherFakeApi
+
+All URIs are relative to *http://petstore.swagger.io:80/v2*
+
+| Method | HTTP request | Description |
+|------------- | ------------- | -------------|
+| [**call123testSpecialTags**](AnotherFakeApi.md#call123testSpecialTags) | **PATCH** /another-fake/dummy | To test special tags |
+
+
+
+## call123testSpecialTags
+
+> Client call123testSpecialTags(client)
+
+To test special tags
+
+To test special tags and operation ID starting with number
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.AnotherFakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        AnotherFakeApi apiInstance = new AnotherFakeApi(defaultClient);
+        Client client = new Client(); // Client | client model
+        try {
+            Client result = apiInstance.call123testSpecialTags(client);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling AnotherFakeApi#call123testSpecialTags");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **client** | [**Client**](Client.md)| client model | |
+
+### Return type
+
+[**Client**](Client.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: application/json
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/ArrayOfArrayOfNumberOnly.md b/samples/client/petstore/java/microprofile-rest-client/docs/ArrayOfArrayOfNumberOnly.md
new file mode 100644
index 00000000000..0188db3eb13
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/ArrayOfArrayOfNumberOnly.md
@@ -0,0 +1,13 @@
+
+
+# ArrayOfArrayOfNumberOnly
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**arrayArrayNumber** | **List&lt;List&lt;BigDecimal&gt;&gt;** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/ArrayOfNumberOnly.md b/samples/client/petstore/java/microprofile-rest-client/docs/ArrayOfNumberOnly.md
new file mode 100644
index 00000000000..a5753530aad
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/ArrayOfNumberOnly.md
@@ -0,0 +1,13 @@
+
+
+# ArrayOfNumberOnly
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**arrayNumber** | **List&lt;BigDecimal&gt;** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/ArrayTest.md b/samples/client/petstore/java/microprofile-rest-client/docs/ArrayTest.md
new file mode 100644
index 00000000000..36077c9df30
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/ArrayTest.md
@@ -0,0 +1,15 @@
+
+
+# ArrayTest
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**arrayOfString** | **List&lt;String&gt;** |  |  [optional] |
+|**arrayArrayOfInteger** | **List&lt;List&lt;Long&gt;&gt;** |  |  [optional] |
+|**arrayArrayOfModel** | **List&lt;List&lt;ReadOnlyFirst&gt;&gt;** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/Capitalization.md b/samples/client/petstore/java/microprofile-rest-client/docs/Capitalization.md
new file mode 100644
index 00000000000..82a812711de
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/Capitalization.md
@@ -0,0 +1,18 @@
+
+
+# Capitalization
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**smallCamel** | **String** |  |  [optional] |
+|**capitalCamel** | **String** |  |  [optional] |
+|**smallSnake** | **String** |  |  [optional] |
+|**capitalSnake** | **String** |  |  [optional] |
+|**scAETHFlowPoints** | **String** |  |  [optional] |
+|**ATT_NAME** | **String** | Name of the pet  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/Cat.md b/samples/client/petstore/java/microprofile-rest-client/docs/Cat.md
new file mode 100644
index 00000000000..390dd519c8c
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/Cat.md
@@ -0,0 +1,13 @@
+
+
+# Cat
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**declawed** | **Boolean** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/Category.md b/samples/client/petstore/java/microprofile-rest-client/docs/Category.md
index a7fc939d252..ab6d1ec334d 100644
--- a/samples/client/petstore/java/microprofile-rest-client/docs/Category.md
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/Category.md
@@ -2,14 +2,13 @@
 
 # Category
 
-A category for a pet
 
 ## Properties
 
 | Name | Type | Description | Notes |
 |------------ | ------------- | ------------- | -------------|
 |**id** | **Long** |  |  [optional] |
-|**name** | **String** |  |  [optional] |
+|**name** | **String** |  |  |
 
 
 
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/ChildWithNullable.md b/samples/client/petstore/java/microprofile-rest-client/docs/ChildWithNullable.md
new file mode 100644
index 00000000000..73c0dd6d473
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/ChildWithNullable.md
@@ -0,0 +1,13 @@
+
+
+# ChildWithNullable
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**otherProperty** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/ClassModel.md b/samples/client/petstore/java/microprofile-rest-client/docs/ClassModel.md
new file mode 100644
index 00000000000..af46dea1f6c
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/ClassModel.md
@@ -0,0 +1,14 @@
+
+
+# ClassModel
+
+Model for testing model with \"_class\" property
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**propertyClass** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/Client.md b/samples/client/petstore/java/microprofile-rest-client/docs/Client.md
new file mode 100644
index 00000000000..ef07b4ab8b9
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/Client.md
@@ -0,0 +1,13 @@
+
+
+# Client
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**client** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/DefaultApi.md b/samples/client/petstore/java/microprofile-rest-client/docs/DefaultApi.md
new file mode 100644
index 00000000000..3b2c1dbda17
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/DefaultApi.md
@@ -0,0 +1,69 @@
+# DefaultApi
+
+All URIs are relative to *http://petstore.swagger.io:80/v2*
+
+| Method | HTTP request | Description |
+|------------- | ------------- | -------------|
+| [**fooGet**](DefaultApi.md#fooGet) | **GET** /foo |  |
+
+
+
+## fooGet
+
+> FooGetDefaultResponse fooGet()
+
+
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.DefaultApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        DefaultApi apiInstance = new DefaultApi(defaultClient);
+        try {
+            FooGetDefaultResponse result = apiInstance.fooGet();
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling DefaultApi#fooGet");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+This endpoint does not need any parameter.
+
+### Return type
+
+[**FooGetDefaultResponse**](FooGetDefaultResponse.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: Not defined
+- **Accept**: application/json
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | response |  -  |
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/DeprecatedObject.md b/samples/client/petstore/java/microprofile-rest-client/docs/DeprecatedObject.md
new file mode 100644
index 00000000000..48de1d62442
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/DeprecatedObject.md
@@ -0,0 +1,13 @@
+
+
+# DeprecatedObject
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**name** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/Dog.md b/samples/client/petstore/java/microprofile-rest-client/docs/Dog.md
new file mode 100644
index 00000000000..972c981c0d0
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/Dog.md
@@ -0,0 +1,13 @@
+
+
+# Dog
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**breed** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/EnumArrays.md b/samples/client/petstore/java/microprofile-rest-client/docs/EnumArrays.md
new file mode 100644
index 00000000000..b2222d5beb2
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/EnumArrays.md
@@ -0,0 +1,32 @@
+
+
+# EnumArrays
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**justSymbol** | [**JustSymbolEnum**](#JustSymbolEnum) |  |  [optional] |
+|**arrayEnum** | [**List&lt;ArrayEnumEnum&gt;**](#List&lt;ArrayEnumEnum&gt;) |  |  [optional] |
+
+
+
+## Enum: JustSymbolEnum
+
+| Name | Value |
+|---- | -----|
+| GREATER_THAN_OR_EQUAL_TO | &quot;&gt;&#x3D;&quot; |
+| DOLLAR | &quot;$&quot; |
+
+
+
+## Enum: List&lt;ArrayEnumEnum&gt;
+
+| Name | Value |
+|---- | -----|
+| FISH | &quot;fish&quot; |
+| CRAB | &quot;crab&quot; |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/EnumClass.md b/samples/client/petstore/java/microprofile-rest-client/docs/EnumClass.md
new file mode 100644
index 00000000000..b314590a759
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/EnumClass.md
@@ -0,0 +1,15 @@
+
+
+# EnumClass
+
+## Enum
+
+
+* `_ABC` (value: `"_abc"`)
+
+* `_EFG` (value: `"-efg"`)
+
+* `_XYZ_` (value: `"(xyz)"`)
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/EnumTest.md b/samples/client/petstore/java/microprofile-rest-client/docs/EnumTest.md
new file mode 100644
index 00000000000..380a2aef0bc
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/EnumTest.md
@@ -0,0 +1,58 @@
+
+
+# EnumTest
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**enumString** | [**EnumStringEnum**](#EnumStringEnum) |  |  [optional] |
+|**enumStringRequired** | [**EnumStringRequiredEnum**](#EnumStringRequiredEnum) |  |  |
+|**enumInteger** | [**EnumIntegerEnum**](#EnumIntegerEnum) |  |  [optional] |
+|**enumNumber** | [**EnumNumberEnum**](#EnumNumberEnum) |  |  [optional] |
+|**outerEnum** | **OuterEnum** |  |  [optional] |
+|**outerEnumInteger** | **OuterEnumInteger** |  |  [optional] |
+|**outerEnumDefaultValue** | **OuterEnumDefaultValue** |  |  [optional] |
+|**outerEnumIntegerDefaultValue** | **OuterEnumIntegerDefaultValue** |  |  [optional] |
+
+
+
+## Enum: EnumStringEnum
+
+| Name | Value |
+|---- | -----|
+| UPPER | &quot;UPPER&quot; |
+| LOWER | &quot;lower&quot; |
+| EMPTY | &quot;&quot; |
+
+
+
+## Enum: EnumStringRequiredEnum
+
+| Name | Value |
+|---- | -----|
+| UPPER | &quot;UPPER&quot; |
+| LOWER | &quot;lower&quot; |
+| EMPTY | &quot;&quot; |
+
+
+
+## Enum: EnumIntegerEnum
+
+| Name | Value |
+|---- | -----|
+| NUMBER_1 | 1 |
+| NUMBER_MINUS_1 | -1 |
+
+
+
+## Enum: EnumNumberEnum
+
+| Name | Value |
+|---- | -----|
+| NUMBER_1_DOT_1 | 1.1 |
+| NUMBER_MINUS_1_DOT_2 | -1.2 |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/FakeApi.md b/samples/client/petstore/java/microprofile-rest-client/docs/FakeApi.md
new file mode 100644
index 00000000000..02df4858d16
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/FakeApi.md
@@ -0,0 +1,1555 @@
+# FakeApi
+
+All URIs are relative to *http://petstore.swagger.io:80/v2*
+
+| Method | HTTP request | Description |
+|------------- | ------------- | -------------|
+| [**fakeBigDecimalMap**](FakeApi.md#fakeBigDecimalMap) | **GET** /fake/BigDecimalMap |  |
+| [**fakeHealthGet**](FakeApi.md#fakeHealthGet) | **GET** /fake/health | Health check endpoint |
+| [**fakeHttpSignatureTest**](FakeApi.md#fakeHttpSignatureTest) | **GET** /fake/http-signature-test | test http signature authentication |
+| [**fakeOuterBooleanSerialize**](FakeApi.md#fakeOuterBooleanSerialize) | **POST** /fake/outer/boolean |  |
+| [**fakeOuterCompositeSerialize**](FakeApi.md#fakeOuterCompositeSerialize) | **POST** /fake/outer/composite |  |
+| [**fakeOuterNumberSerialize**](FakeApi.md#fakeOuterNumberSerialize) | **POST** /fake/outer/number |  |
+| [**fakeOuterStringSerialize**](FakeApi.md#fakeOuterStringSerialize) | **POST** /fake/outer/string |  |
+| [**fakePropertyEnumIntegerSerialize**](FakeApi.md#fakePropertyEnumIntegerSerialize) | **POST** /fake/property/enum-int |  |
+| [**testAdditionalPropertiesReference**](FakeApi.md#testAdditionalPropertiesReference) | **POST** /fake/additionalProperties-reference | test referenced additionalProperties |
+| [**testBodyWithBinary**](FakeApi.md#testBodyWithBinary) | **PUT** /fake/body-with-binary |  |
+| [**testBodyWithFileSchema**](FakeApi.md#testBodyWithFileSchema) | **PUT** /fake/body-with-file-schema |  |
+| [**testBodyWithQueryParams**](FakeApi.md#testBodyWithQueryParams) | **PUT** /fake/body-with-query-params |  |
+| [**testClientModel**](FakeApi.md#testClientModel) | **PATCH** /fake | To test \&quot;client\&quot; model |
+| [**testEndpointParameters**](FakeApi.md#testEndpointParameters) | **POST** /fake | Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트  |
+| [**testEnumParameters**](FakeApi.md#testEnumParameters) | **GET** /fake | To test enum parameters |
+| [**testGroupParameters**](FakeApi.md#testGroupParameters) | **DELETE** /fake | Fake endpoint to test group parameters (optional) |
+| [**testInlineAdditionalProperties**](FakeApi.md#testInlineAdditionalProperties) | **POST** /fake/inline-additionalProperties | test inline additionalProperties |
+| [**testInlineFreeformAdditionalProperties**](FakeApi.md#testInlineFreeformAdditionalProperties) | **POST** /fake/inline-freeform-additionalProperties | test inline free-form additionalProperties |
+| [**testJsonFormData**](FakeApi.md#testJsonFormData) | **GET** /fake/jsonFormData | test json serialization of form data |
+| [**testNullable**](FakeApi.md#testNullable) | **POST** /fake/nullable | test nullable parent property |
+| [**testQueryParameterCollectionFormat**](FakeApi.md#testQueryParameterCollectionFormat) | **PUT** /fake/test-query-parameters |  |
+| [**testStringMapReference**](FakeApi.md#testStringMapReference) | **POST** /fake/stringMap-reference | test referenced string map |
+
+
+
+## fakeBigDecimalMap
+
+> FakeBigDecimalMap200Response fakeBigDecimalMap()
+
+
+
+for Java apache and Java native, test toUrlQueryString for maps with BegDecimal keys
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        try {
+            FakeBigDecimalMap200Response result = apiInstance.fakeBigDecimalMap();
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#fakeBigDecimalMap");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+This endpoint does not need any parameter.
+
+### Return type
+
+[**FakeBigDecimalMap200Response**](FakeBigDecimalMap200Response.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: Not defined
+- **Accept**: */*
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
+
+## fakeHealthGet
+
+> HealthCheckResult fakeHealthGet()
+
+Health check endpoint
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        try {
+            HealthCheckResult result = apiInstance.fakeHealthGet();
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#fakeHealthGet");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+This endpoint does not need any parameter.
+
+### Return type
+
+[**HealthCheckResult**](HealthCheckResult.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: Not defined
+- **Accept**: application/json
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | The instance started successfully |  -  |
+
+
+## fakeHttpSignatureTest
+
+> void fakeHttpSignatureTest(pet, query1, header1)
+
+test http signature authentication
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.auth.*;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+        
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        Pet pet = new Pet(); // Pet | Pet object that needs to be added to the store
+        String query1 = "query1_example"; // String | query parameter
+        String header1 = "header1_example"; // String | header parameter
+        try {
+            void result = apiInstance.fakeHttpSignatureTest(pet, query1, header1);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#fakeHttpSignatureTest");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **pet** | [**Pet**](Pet.md)| Pet object that needs to be added to the store | |
+| **query1** | **String**| query parameter | [optional] |
+| **header1** | **String**| header parameter | [optional] |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+[http_signature_test](../README.md#http_signature_test)
+
+### HTTP request headers
+
+- **Content-Type**: application/json, application/xml
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | The instance started successfully |  -  |
+
+
+## fakeOuterBooleanSerialize
+
+> Boolean fakeOuterBooleanSerialize(body)
+
+
+
+Test serialization of outer boolean types
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        Boolean body = true; // Boolean | Input boolean as post body
+        try {
+            Boolean result = apiInstance.fakeOuterBooleanSerialize(body);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#fakeOuterBooleanSerialize");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **body** | **Boolean**| Input boolean as post body | [optional] |
+
+### Return type
+
+**Boolean**
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: */*
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Output boolean |  -  |
+
+
+## fakeOuterCompositeSerialize
+
+> OuterComposite fakeOuterCompositeSerialize(outerComposite)
+
+
+
+Test serialization of object with outer number type
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        OuterComposite outerComposite = new OuterComposite(); // OuterComposite | Input composite as post body
+        try {
+            OuterComposite result = apiInstance.fakeOuterCompositeSerialize(outerComposite);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#fakeOuterCompositeSerialize");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **outerComposite** | [**OuterComposite**](OuterComposite.md)| Input composite as post body | [optional] |
+
+### Return type
+
+[**OuterComposite**](OuterComposite.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: */*
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Output composite |  -  |
+
+
+## fakeOuterNumberSerialize
+
+> BigDecimal fakeOuterNumberSerialize(body)
+
+
+
+Test serialization of outer number types
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        BigDecimal body = new BigDecimal(78); // BigDecimal | Input number as post body
+        try {
+            BigDecimal result = apiInstance.fakeOuterNumberSerialize(body);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#fakeOuterNumberSerialize");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **body** | **BigDecimal**| Input number as post body | [optional] |
+
+### Return type
+
+[**BigDecimal**](BigDecimal.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: */*
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Output number |  -  |
+
+
+## fakeOuterStringSerialize
+
+> String fakeOuterStringSerialize(body)
+
+
+
+Test serialization of outer string types
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        String body = "body_example"; // String | Input string as post body
+        try {
+            String result = apiInstance.fakeOuterStringSerialize(body);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#fakeOuterStringSerialize");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **body** | **String**| Input string as post body | [optional] |
+
+### Return type
+
+**String**
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: */*
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Output string |  -  |
+
+
+## fakePropertyEnumIntegerSerialize
+
+> OuterObjectWithEnumProperty fakePropertyEnumIntegerSerialize(outerObjectWithEnumProperty)
+
+
+
+Test serialization of enum (int) properties with examples
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        OuterObjectWithEnumProperty outerObjectWithEnumProperty = new OuterObjectWithEnumProperty(); // OuterObjectWithEnumProperty | Input enum (int) as post body
+        try {
+            OuterObjectWithEnumProperty result = apiInstance.fakePropertyEnumIntegerSerialize(outerObjectWithEnumProperty);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#fakePropertyEnumIntegerSerialize");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **outerObjectWithEnumProperty** | [**OuterObjectWithEnumProperty**](OuterObjectWithEnumProperty.md)| Input enum (int) as post body | |
+
+### Return type
+
+[**OuterObjectWithEnumProperty**](OuterObjectWithEnumProperty.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: */*
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Output enum (int) |  -  |
+
+
+## testAdditionalPropertiesReference
+
+> void testAdditionalPropertiesReference(requestBody)
+
+test referenced additionalProperties
+
+
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        Map<String, Object> requestBody = null; // Map<String, Object> | request body
+        try {
+            void result = apiInstance.testAdditionalPropertiesReference(requestBody);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testAdditionalPropertiesReference");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **requestBody** | [**Map&lt;String, Object&gt;**](Object.md)| request body | |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
+
+## testBodyWithBinary
+
+> void testBodyWithBinary(body)
+
+
+
+For this test, the body has to be a binary file.
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        File body = new File("/path/to/file"); // File | image to upload
+        try {
+            void result = apiInstance.testBodyWithBinary(body);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testBodyWithBinary");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **body** | **File**| image to upload | |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: image/png
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Success |  -  |
+
+
+## testBodyWithFileSchema
+
+> void testBodyWithFileSchema(fileSchemaTestClass)
+
+
+
+For this test, the body for this request must reference a schema named &#x60;File&#x60;.
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        FileSchemaTestClass fileSchemaTestClass = new FileSchemaTestClass(); // FileSchemaTestClass | 
+        try {
+            void result = apiInstance.testBodyWithFileSchema(fileSchemaTestClass);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testBodyWithFileSchema");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **fileSchemaTestClass** | [**FileSchemaTestClass**](FileSchemaTestClass.md)|  | |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Success |  -  |
+
+
+## testBodyWithQueryParams
+
+> void testBodyWithQueryParams(query, user)
+
+
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        String query = "query_example"; // String | 
+        User user = new User(); // User | 
+        try {
+            void result = apiInstance.testBodyWithQueryParams(query, user);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testBodyWithQueryParams");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **query** | **String**|  | |
+| **user** | [**User**](User.md)|  | |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Success |  -  |
+
+
+## testClientModel
+
+> Client testClientModel(client)
+
+To test \&quot;client\&quot; model
+
+To test \&quot;client\&quot; model
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        Client client = new Client(); // Client | client model
+        try {
+            Client result = apiInstance.testClientModel(client);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testClientModel");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **client** | [**Client**](Client.md)| client model | |
+
+### Return type
+
+[**Client**](Client.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: application/json
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
+
+## testEndpointParameters
+
+> void testEndpointParameters(number, _double, patternWithoutDelimiter, _byte, integer, int32, int64, _float, string, binary, date, dateTime, password, paramCallback)
+
+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 
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.auth.*;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+        
+        // Configure HTTP basic authorization: http_basic_test
+        HttpBasicAuth http_basic_test = (HttpBasicAuth) defaultClient.getAuthentication("http_basic_test");
+        http_basic_test.setUsername("YOUR USERNAME");
+        http_basic_test.setPassword("YOUR PASSWORD");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        BigDecimal number = new BigDecimal(78); // BigDecimal | None
+        Double _double = 3.4D; // Double | None
+        String patternWithoutDelimiter = "patternWithoutDelimiter_example"; // String | None
+        byte[] _byte = null; // byte[] | None
+        Integer integer = 56; // Integer | None
+        Integer int32 = 56; // Integer | None
+        Long int64 = 56L; // Long | None
+        Float _float = 3.4F; // Float | None
+        String string = "string_example"; // String | None
+        File binary = new File("/path/to/file"); // File | None
+        Date date = new Date(); // Date | None
+        Date dateTime = new Date(); // Date | None
+        String password = "password_example"; // String | None
+        String paramCallback = "paramCallback_example"; // String | None
+        try {
+            void result = apiInstance.testEndpointParameters(number, _double, patternWithoutDelimiter, _byte, integer, int32, int64, _float, string, binary, date, dateTime, password, paramCallback);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testEndpointParameters");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **number** | **BigDecimal**| None | |
+| **_double** | **Double**| None | |
+| **patternWithoutDelimiter** | **String**| None | |
+| **_byte** | **byte[]**| None | |
+| **integer** | **Integer**| None | [optional] |
+| **int32** | **Integer**| None | [optional] |
+| **int64** | **Long**| None | [optional] |
+| **_float** | **Float**| None | [optional] |
+| **string** | **String**| None | [optional] |
+| **binary** | **File**| None | [optional] |
+| **date** | **Date**| None | [optional] |
+| **dateTime** | **Date**| None | [optional] |
+| **password** | **String**| None | [optional] |
+| **paramCallback** | **String**| None | [optional] |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+[http_basic_test](../README.md#http_basic_test)
+
+### HTTP request headers
+
+- **Content-Type**: application/x-www-form-urlencoded
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **400** | Invalid username supplied |  -  |
+| **404** | User not found |  -  |
+
+
+## testEnumParameters
+
+> void testEnumParameters(enumHeaderStringArray, enumHeaderString, enumQueryStringArray, enumQueryString, enumQueryInteger, enumQueryDouble, enumQueryModelArray, enumFormStringArray, enumFormString)
+
+To test enum parameters
+
+To test enum parameters
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        List<String> enumHeaderStringArray = Arrays.asList("$"); // List<String> | Header parameter enum test (string array)
+        String enumHeaderString = "_abc"; // String | Header parameter enum test (string)
+        List<String> enumQueryStringArray = Arrays.asList("$"); // List<String> | Query parameter enum test (string array)
+        String enumQueryString = "_abc"; // String | Query parameter enum test (string)
+        Integer enumQueryInteger = 1; // Integer | Query parameter enum test (double)
+        Double enumQueryDouble = 1.1D; // Double | Query parameter enum test (double)
+        List<EnumClass> enumQueryModelArray = Arrays.asList(-efg); // List<EnumClass> | 
+        List<String> enumFormStringArray = Arrays.asList("$"); // List<String> | Form parameter enum test (string array)
+        String enumFormString = "_abc"; // String | Form parameter enum test (string)
+        try {
+            void result = apiInstance.testEnumParameters(enumHeaderStringArray, enumHeaderString, enumQueryStringArray, enumQueryString, enumQueryInteger, enumQueryDouble, enumQueryModelArray, enumFormStringArray, enumFormString);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testEnumParameters");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **enumHeaderStringArray** | [**List&lt;String&gt;**](String.md)| Header parameter enum test (string array) | [optional] [enum: >, $] |
+| **enumHeaderString** | **String**| Header parameter enum test (string) | [optional] [default to -efg] [enum: _abc, -efg, (xyz)] |
+| **enumQueryStringArray** | [**List&lt;String&gt;**](String.md)| Query parameter enum test (string array) | [optional] [enum: >, $] |
+| **enumQueryString** | **String**| Query parameter enum test (string) | [optional] [default to -efg] [enum: _abc, -efg, (xyz)] |
+| **enumQueryInteger** | **Integer**| Query parameter enum test (double) | [optional] [enum: 1, -2] |
+| **enumQueryDouble** | **Double**| Query parameter enum test (double) | [optional] [enum: 1.1, -1.2] |
+| **enumQueryModelArray** | [**List&lt;EnumClass&gt;**](EnumClass.md)|  | [optional] |
+| **enumFormStringArray** | [**List&lt;String&gt;**](String.md)| Form parameter enum test (string array) | [optional] [enum: >, $] |
+| **enumFormString** | **String**| Form parameter enum test (string) | [optional] [default to -efg] [enum: _abc, -efg, (xyz)] |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/x-www-form-urlencoded
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **400** | Invalid request |  -  |
+| **404** | Not found |  -  |
+
+
+## testGroupParameters
+
+> void testGroupParameters(requiredStringGroup, requiredBooleanGroup, requiredInt64Group, stringGroup, booleanGroup, int64Group)
+
+Fake endpoint to test group parameters (optional)
+
+Fake endpoint to test group parameters (optional)
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.auth.*;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+        
+        // Configure HTTP bearer authorization: bearer_test
+        HttpBearerAuth bearer_test = (HttpBearerAuth) defaultClient.getAuthentication("bearer_test");
+        bearer_test.setBearerToken("BEARER TOKEN");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        Integer requiredStringGroup = 56; // Integer | Required String in group parameters
+        Boolean requiredBooleanGroup = true; // Boolean | Required Boolean in group parameters
+        Long requiredInt64Group = 56L; // Long | Required Integer in group parameters
+        Integer stringGroup = 56; // Integer | String in group parameters
+        Boolean booleanGroup = true; // Boolean | Boolean in group parameters
+        Long int64Group = 56L; // Long | Integer in group parameters
+        try {
+            void result = apiInstance.testGroupParameters(requiredStringGroup, requiredBooleanGroup, requiredInt64Group, stringGroup, booleanGroup, int64Group);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testGroupParameters");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **requiredStringGroup** | **Integer**| Required String in group parameters | |
+| **requiredBooleanGroup** | **Boolean**| Required Boolean in group parameters | |
+| **requiredInt64Group** | **Long**| Required Integer in group parameters | |
+| **stringGroup** | **Integer**| String in group parameters | [optional] |
+| **booleanGroup** | **Boolean**| Boolean in group parameters | [optional] |
+| **int64Group** | **Long**| Integer in group parameters | [optional] |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+[bearer_test](../README.md#bearer_test)
+
+### HTTP request headers
+
+- **Content-Type**: Not defined
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **400** | Something wrong |  -  |
+
+
+## testInlineAdditionalProperties
+
+> void testInlineAdditionalProperties(requestBody)
+
+test inline additionalProperties
+
+
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        Map<String, String> requestBody = new HashMap(); // Map<String, String> | request body
+        try {
+            void result = apiInstance.testInlineAdditionalProperties(requestBody);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testInlineAdditionalProperties");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **requestBody** | [**Map&lt;String, String&gt;**](String.md)| request body | |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
+
+## testInlineFreeformAdditionalProperties
+
+> void testInlineFreeformAdditionalProperties(testInlineFreeformAdditionalPropertiesRequest)
+
+test inline free-form additionalProperties
+
+
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        TestInlineFreeformAdditionalPropertiesRequest testInlineFreeformAdditionalPropertiesRequest = new TestInlineFreeformAdditionalPropertiesRequest(); // TestInlineFreeformAdditionalPropertiesRequest | request body
+        try {
+            void result = apiInstance.testInlineFreeformAdditionalProperties(testInlineFreeformAdditionalPropertiesRequest);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testInlineFreeformAdditionalProperties");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **testInlineFreeformAdditionalPropertiesRequest** | [**TestInlineFreeformAdditionalPropertiesRequest**](TestInlineFreeformAdditionalPropertiesRequest.md)| request body | |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
+
+## testJsonFormData
+
+> void testJsonFormData(param, param2)
+
+test json serialization of form data
+
+
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        String param = "param_example"; // String | field1
+        String param2 = "param2_example"; // String | field2
+        try {
+            void result = apiInstance.testJsonFormData(param, param2);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testJsonFormData");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **param** | **String**| field1 | |
+| **param2** | **String**| field2 | |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/x-www-form-urlencoded
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
+
+## testNullable
+
+> void testNullable(childWithNullable)
+
+test nullable parent property
+
+
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        ChildWithNullable childWithNullable = new ChildWithNullable(); // ChildWithNullable | request body
+        try {
+            void result = apiInstance.testNullable(childWithNullable);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testNullable");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **childWithNullable** | [**ChildWithNullable**](ChildWithNullable.md)| request body | |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
+
+## testQueryParameterCollectionFormat
+
+> void testQueryParameterCollectionFormat(pipe, ioutil, http, url, context, allowEmpty, language)
+
+
+
+To test the collection format in query parameters
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        List<String> pipe = Arrays.asList(); // List<String> | 
+        List<String> ioutil = Arrays.asList(); // List<String> | 
+        List<String> http = Arrays.asList(); // List<String> | 
+        List<String> url = Arrays.asList(); // List<String> | 
+        List<String> context = Arrays.asList(); // List<String> | 
+        String allowEmpty = "allowEmpty_example"; // String | 
+        Map<String, String> language = new HashMap(); // Map<String, String> | 
+        try {
+            void result = apiInstance.testQueryParameterCollectionFormat(pipe, ioutil, http, url, context, allowEmpty, language);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testQueryParameterCollectionFormat");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **pipe** | [**List&lt;String&gt;**](String.md)|  | |
+| **ioutil** | [**List&lt;String&gt;**](String.md)|  | |
+| **http** | [**List&lt;String&gt;**](String.md)|  | |
+| **url** | [**List&lt;String&gt;**](String.md)|  | |
+| **context** | [**List&lt;String&gt;**](String.md)|  | |
+| **allowEmpty** | **String**|  | |
+| **language** | [**Map&lt;String, String&gt;**](String.md)|  | [optional] |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: Not defined
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Success |  -  |
+
+
+## testStringMapReference
+
+> void testStringMapReference(requestBody)
+
+test referenced string map
+
+
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+        FakeApi apiInstance = new FakeApi(defaultClient);
+        Map<String, String> requestBody = new HashMap(); // Map<String, String> | request body
+        try {
+            void result = apiInstance.testStringMapReference(requestBody);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeApi#testStringMapReference");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **requestBody** | [**Map&lt;String, String&gt;**](String.md)| request body | |
+
+### Return type
+
+[**void**](Void.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: Not defined
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/FakeBigDecimalMap200Response.md b/samples/client/petstore/java/microprofile-rest-client/docs/FakeBigDecimalMap200Response.md
new file mode 100644
index 00000000000..475be1d2d73
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/FakeBigDecimalMap200Response.md
@@ -0,0 +1,14 @@
+
+
+# FakeBigDecimalMap200Response
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**someId** | **BigDecimal** |  |  [optional] |
+|**someMap** | **Map&lt;String, BigDecimal&gt;** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/FakeClassnameTags123Api.md b/samples/client/petstore/java/microprofile-rest-client/docs/FakeClassnameTags123Api.md
new file mode 100644
index 00000000000..e4ff70ed909
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/FakeClassnameTags123Api.md
@@ -0,0 +1,82 @@
+# FakeClassnameTags123Api
+
+All URIs are relative to *http://petstore.swagger.io:80/v2*
+
+| Method | HTTP request | Description |
+|------------- | ------------- | -------------|
+| [**testClassname**](FakeClassnameTags123Api.md#testClassname) | **PATCH** /fake_classname_test | To test class name in snake case |
+
+
+
+## testClassname
+
+> Client testClassname(client)
+
+To test class name in snake case
+
+To test class name in snake case
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.auth.*;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.FakeClassnameTags123Api;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+        
+        // Configure API key authorization: api_key_query
+        ApiKeyAuth api_key_query = (ApiKeyAuth) defaultClient.getAuthentication("api_key_query");
+        api_key_query.setApiKey("YOUR API KEY");
+        // Uncomment the following line to set a prefix for the API key, e.g. "Token" (defaults to null)
+        //api_key_query.setApiKeyPrefix("Token");
+
+        FakeClassnameTags123Api apiInstance = new FakeClassnameTags123Api(defaultClient);
+        Client client = new Client(); // Client | client model
+        try {
+            Client result = apiInstance.testClassname(client);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling FakeClassnameTags123Api#testClassname");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **client** | [**Client**](Client.md)| client model | |
+
+### Return type
+
+[**Client**](Client.md)
+
+### Authorization
+
+[api_key_query](../README.md#api_key_query)
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: application/json
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/FileSchemaTestClass.md b/samples/client/petstore/java/microprofile-rest-client/docs/FileSchemaTestClass.md
new file mode 100644
index 00000000000..85d1a063669
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/FileSchemaTestClass.md
@@ -0,0 +1,14 @@
+
+
+# FileSchemaTestClass
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**_file** | [**ModelFile**](ModelFile.md) |  |  [optional] |
+|**files** | [**List&lt;ModelFile&gt;**](ModelFile.md) |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/Foo.md b/samples/client/petstore/java/microprofile-rest-client/docs/Foo.md
new file mode 100644
index 00000000000..6b3f0556528
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/Foo.md
@@ -0,0 +1,13 @@
+
+
+# Foo
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**bar** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/FooGetDefaultResponse.md b/samples/client/petstore/java/microprofile-rest-client/docs/FooGetDefaultResponse.md
new file mode 100644
index 00000000000..ff3d7a3a56c
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/FooGetDefaultResponse.md
@@ -0,0 +1,13 @@
+
+
+# FooGetDefaultResponse
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**string** | [**Foo**](Foo.md) |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/FormatTest.md b/samples/client/petstore/java/microprofile-rest-client/docs/FormatTest.md
new file mode 100644
index 00000000000..d5b492c6e4e
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/FormatTest.md
@@ -0,0 +1,28 @@
+
+
+# FormatTest
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**integer** | **Integer** |  |  [optional] |
+|**int32** | **Integer** |  |  [optional] |
+|**int64** | **Long** |  |  [optional] |
+|**number** | **BigDecimal** |  |  |
+|**_float** | **Float** |  |  [optional] |
+|**_double** | **Double** |  |  [optional] |
+|**decimal** | **BigDecimal** |  |  [optional] |
+|**string** | **String** |  |  [optional] |
+|**_byte** | **byte[]** |  |  |
+|**binary** | **File** |  |  [optional] |
+|**date** | **Date** |  |  |
+|**dateTime** | **Date** |  |  [optional] |
+|**uuid** | **UUID** |  |  [optional] |
+|**password** | **String** |  |  |
+|**patternWithDigits** | **String** | A string that is a 10 digit number. Can have leading zeros. |  [optional] |
+|**patternWithDigitsAndDelimiter** | **String** | A string starting with &#39;image_&#39; (case insensitive) and one to three digits following i.e. Image_01. |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/HasOnlyReadOnly.md b/samples/client/petstore/java/microprofile-rest-client/docs/HasOnlyReadOnly.md
new file mode 100644
index 00000000000..29da5205dbb
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/HasOnlyReadOnly.md
@@ -0,0 +1,14 @@
+
+
+# HasOnlyReadOnly
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**bar** | **String** |  |  [optional] [readonly] |
+|**foo** | **String** |  |  [optional] [readonly] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/HealthCheckResult.md b/samples/client/petstore/java/microprofile-rest-client/docs/HealthCheckResult.md
new file mode 100644
index 00000000000..4885e6f1cad
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/HealthCheckResult.md
@@ -0,0 +1,14 @@
+
+
+# HealthCheckResult
+
+Just a string to inform instance is up and running. Make it nullable in hope to get it as pointer in generated model.
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**nullableMessage** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/MapTest.md b/samples/client/petstore/java/microprofile-rest-client/docs/MapTest.md
new file mode 100644
index 00000000000..54380188e1d
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/MapTest.md
@@ -0,0 +1,25 @@
+
+
+# MapTest
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**mapMapOfString** | **Map&lt;String, Map&lt;String, String&gt;&gt;** |  |  [optional] |
+|**mapOfEnumString** | [**Map&lt;String, InnerEnum&gt;**](#Map&lt;String, InnerEnum&gt;) |  |  [optional] |
+|**directMap** | **Map&lt;String, Boolean&gt;** |  |  [optional] |
+|**indirectMap** | **Map&lt;String, Boolean&gt;** |  |  [optional] |
+
+
+
+## Enum: Map&lt;String, InnerEnum&gt;
+
+| Name | Value |
+|---- | -----|
+| UPPER | &quot;UPPER&quot; |
+| LOWER | &quot;lower&quot; |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/MixedPropertiesAndAdditionalPropertiesClass.md b/samples/client/petstore/java/microprofile-rest-client/docs/MixedPropertiesAndAdditionalPropertiesClass.md
new file mode 100644
index 00000000000..f9867c07e7c
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/MixedPropertiesAndAdditionalPropertiesClass.md
@@ -0,0 +1,15 @@
+
+
+# MixedPropertiesAndAdditionalPropertiesClass
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**uuid** | **UUID** |  |  [optional] |
+|**dateTime** | **Date** |  |  [optional] |
+|**map** | [**Map&lt;String, Animal&gt;**](Animal.md) |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/Model200Response.md b/samples/client/petstore/java/microprofile-rest-client/docs/Model200Response.md
new file mode 100644
index 00000000000..109411580c6
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/Model200Response.md
@@ -0,0 +1,15 @@
+
+
+# Model200Response
+
+Model for testing model name starting with number
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**name** | **Integer** |  |  [optional] |
+|**propertyClass** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/ModelApiResponse.md b/samples/client/petstore/java/microprofile-rest-client/docs/ModelApiResponse.md
index cd7e3c400be..e374c2dd2de 100644
--- a/samples/client/petstore/java/microprofile-rest-client/docs/ModelApiResponse.md
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/ModelApiResponse.md
@@ -2,7 +2,6 @@
 
 # ModelApiResponse
 
-Describes the result of uploading an image resource
 
 ## Properties
 
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/ModelFile.md b/samples/client/petstore/java/microprofile-rest-client/docs/ModelFile.md
new file mode 100644
index 00000000000..adcde984f52
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/ModelFile.md
@@ -0,0 +1,14 @@
+
+
+# ModelFile
+
+Must be named `File` for test.
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**sourceURI** | **String** | Test capitalization |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/ModelList.md b/samples/client/petstore/java/microprofile-rest-client/docs/ModelList.md
new file mode 100644
index 00000000000..f93ab7dde8d
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/ModelList.md
@@ -0,0 +1,13 @@
+
+
+# ModelList
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**_123list** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/ModelReturn.md b/samples/client/petstore/java/microprofile-rest-client/docs/ModelReturn.md
new file mode 100644
index 00000000000..0bd356861eb
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/ModelReturn.md
@@ -0,0 +1,14 @@
+
+
+# ModelReturn
+
+Model for testing reserved words
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**_return** | **Integer** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/Name.md b/samples/client/petstore/java/microprofile-rest-client/docs/Name.md
new file mode 100644
index 00000000000..c901d943530
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/Name.md
@@ -0,0 +1,17 @@
+
+
+# Name
+
+Model for testing model name same as property name
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**name** | **Integer** |  |  |
+|**snakeCase** | **Integer** |  |  [optional] [readonly] |
+|**property** | **String** |  |  [optional] |
+|**_123number** | **Integer** |  |  [optional] [readonly] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/NullableClass.md b/samples/client/petstore/java/microprofile-rest-client/docs/NullableClass.md
new file mode 100644
index 00000000000..ba2b7f38034
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/NullableClass.md
@@ -0,0 +1,24 @@
+
+
+# NullableClass
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**integerProp** | **Integer** |  |  [optional] |
+|**numberProp** | **BigDecimal** |  |  [optional] |
+|**booleanProp** | **Boolean** |  |  [optional] |
+|**stringProp** | **String** |  |  [optional] |
+|**dateProp** | **Date** |  |  [optional] |
+|**datetimeProp** | **Date** |  |  [optional] |
+|**arrayNullableProp** | **List&lt;Object&gt;** |  |  [optional] |
+|**arrayAndItemsNullableProp** | **List&lt;Object&gt;** |  |  [optional] |
+|**arrayItemsNullable** | **List&lt;Object&gt;** |  |  [optional] |
+|**objectNullableProp** | **Map&lt;String, Object&gt;** |  |  [optional] |
+|**objectAndItemsNullableProp** | **Map&lt;String, Object&gt;** |  |  [optional] |
+|**objectItemsNullable** | **Map&lt;String, Object&gt;** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/NumberOnly.md b/samples/client/petstore/java/microprofile-rest-client/docs/NumberOnly.md
new file mode 100644
index 00000000000..b8ed1a4cfae
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/NumberOnly.md
@@ -0,0 +1,13 @@
+
+
+# NumberOnly
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**justNumber** | **BigDecimal** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/ObjectWithDeprecatedFields.md b/samples/client/petstore/java/microprofile-rest-client/docs/ObjectWithDeprecatedFields.md
new file mode 100644
index 00000000000..f1cf571f4c0
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/ObjectWithDeprecatedFields.md
@@ -0,0 +1,16 @@
+
+
+# ObjectWithDeprecatedFields
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**uuid** | **String** |  |  [optional] |
+|**id** | **BigDecimal** |  |  [optional] |
+|**deprecatedRef** | [**DeprecatedObject**](DeprecatedObject.md) |  |  [optional] |
+|**bars** | **List&lt;String&gt;** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/Order.md b/samples/client/petstore/java/microprofile-rest-client/docs/Order.md
index 7bfa42e6a90..4993c503e5f 100644
--- a/samples/client/petstore/java/microprofile-rest-client/docs/Order.md
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/Order.md
@@ -2,7 +2,6 @@
 
 # Order
 
-An order for a pets from the pet store
 
 ## Properties
 
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/OuterComposite.md b/samples/client/petstore/java/microprofile-rest-client/docs/OuterComposite.md
new file mode 100644
index 00000000000..98b56e0763f
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/OuterComposite.md
@@ -0,0 +1,15 @@
+
+
+# OuterComposite
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**myNumber** | **BigDecimal** |  |  [optional] |
+|**myString** | **String** |  |  [optional] |
+|**myBoolean** | **Boolean** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/OuterEnum.md b/samples/client/petstore/java/microprofile-rest-client/docs/OuterEnum.md
new file mode 100644
index 00000000000..1f9b723eb8e
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/OuterEnum.md
@@ -0,0 +1,15 @@
+
+
+# OuterEnum
+
+## Enum
+
+
+* `PLACED` (value: `"placed"`)
+
+* `APPROVED` (value: `"approved"`)
+
+* `DELIVERED` (value: `"delivered"`)
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/OuterEnumDefaultValue.md b/samples/client/petstore/java/microprofile-rest-client/docs/OuterEnumDefaultValue.md
new file mode 100644
index 00000000000..cbc7f4ba54d
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/OuterEnumDefaultValue.md
@@ -0,0 +1,15 @@
+
+
+# OuterEnumDefaultValue
+
+## Enum
+
+
+* `PLACED` (value: `"placed"`)
+
+* `APPROVED` (value: `"approved"`)
+
+* `DELIVERED` (value: `"delivered"`)
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/OuterEnumInteger.md b/samples/client/petstore/java/microprofile-rest-client/docs/OuterEnumInteger.md
new file mode 100644
index 00000000000..f71dea30ad0
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/OuterEnumInteger.md
@@ -0,0 +1,15 @@
+
+
+# OuterEnumInteger
+
+## Enum
+
+
+* `NUMBER_0` (value: `0`)
+
+* `NUMBER_1` (value: `1`)
+
+* `NUMBER_2` (value: `2`)
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/OuterEnumIntegerDefaultValue.md b/samples/client/petstore/java/microprofile-rest-client/docs/OuterEnumIntegerDefaultValue.md
new file mode 100644
index 00000000000..99e6389f427
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/OuterEnumIntegerDefaultValue.md
@@ -0,0 +1,15 @@
+
+
+# OuterEnumIntegerDefaultValue
+
+## Enum
+
+
+* `NUMBER_0` (value: `0`)
+
+* `NUMBER_1` (value: `1`)
+
+* `NUMBER_2` (value: `2`)
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/OuterObjectWithEnumProperty.md b/samples/client/petstore/java/microprofile-rest-client/docs/OuterObjectWithEnumProperty.md
new file mode 100644
index 00000000000..0fafaaa2715
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/OuterObjectWithEnumProperty.md
@@ -0,0 +1,13 @@
+
+
+# OuterObjectWithEnumProperty
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**value** | **OuterEnumInteger** |  |  |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/ParentWithNullable.md b/samples/client/petstore/java/microprofile-rest-client/docs/ParentWithNullable.md
new file mode 100644
index 00000000000..e4d32298563
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/ParentWithNullable.md
@@ -0,0 +1,22 @@
+
+
+# ParentWithNullable
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**type** | [**TypeEnum**](#TypeEnum) |  |  [optional] |
+|**nullableProperty** | **String** |  |  [optional] |
+
+
+
+## Enum: TypeEnum
+
+| Name | Value |
+|---- | -----|
+| CHILD_WITH_NULLABLE | &quot;ChildWithNullable&quot; |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/Pet.md b/samples/client/petstore/java/microprofile-rest-client/docs/Pet.md
index 8bb36330123..54af77a9f5a 100644
--- a/samples/client/petstore/java/microprofile-rest-client/docs/Pet.md
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/Pet.md
@@ -2,7 +2,6 @@
 
 # Pet
 
-A pet for sale in the pet store
 
 ## Properties
 
@@ -11,7 +10,7 @@ A pet for sale in the pet store
 |**id** | **Long** |  |  [optional] |
 |**category** | [**Category**](Category.md) |  |  [optional] |
 |**name** | **String** |  |  |
-|**photoUrls** | **List&lt;String&gt;** |  |  |
+|**photoUrls** | **Set&lt;String&gt;** |  |  |
 |**tags** | [**List&lt;Tag&gt;**](Tag.md) |  |  [optional] |
 |**status** | [**StatusEnum**](#StatusEnum) | pet status in the store |  [optional] |
 
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/PetApi.md b/samples/client/petstore/java/microprofile-rest-client/docs/PetApi.md
index fb5361b0808..bf4b4333d96 100644
--- a/samples/client/petstore/java/microprofile-rest-client/docs/PetApi.md
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/PetApi.md
@@ -1,6 +1,6 @@
 # PetApi
 
-All URIs are relative to *http://petstore.swagger.io/v2*
+All URIs are relative to *http://petstore.swagger.io:80/v2*
 
 | Method | HTTP request | Description |
 |------------- | ------------- | -------------|
@@ -12,12 +12,13 @@ All URIs are relative to *http://petstore.swagger.io/v2*
 | [**updatePet**](PetApi.md#updatePet) | **PUT** /pet | Update an existing pet |
 | [**updatePetWithForm**](PetApi.md#updatePetWithForm) | **POST** /pet/{petId} | Updates a pet in the store with form data |
 | [**uploadFile**](PetApi.md#uploadFile) | **POST** /pet/{petId}/uploadImage | uploads an image |
+| [**uploadFileWithRequiredFile**](PetApi.md#uploadFileWithRequiredFile) | **POST** /fake/{petId}/uploadImageWithRequiredFile | uploads an image (required) |
 
 
 
 ## addPet
 
-> Pet addPet(pet)
+> void addPet(pet)
 
 Add a new pet to the store
 
@@ -37,7 +38,7 @@ import org.openapitools.client.api.PetApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
         
         // Configure OAuth2 access token for authorization: petstore_auth
         OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
@@ -46,7 +47,7 @@ public class Example {
         PetApi apiInstance = new PetApi(defaultClient);
         Pet pet = new Pet(); // Pet | Pet object that needs to be added to the store
         try {
-            Pet result = apiInstance.addPet(pet);
+            void result = apiInstance.addPet(pet);
             System.out.println(result);
         } catch (ApiException e) {
             System.err.println("Exception when calling PetApi#addPet");
@@ -68,7 +69,7 @@ public class Example {
 
 ### Return type
 
-[**Pet**](Pet.md)
+[**void**](Void.md)
 
 ### Authorization
 
@@ -77,13 +78,13 @@ public class Example {
 ### HTTP request headers
 
 - **Content-Type**: application/json, application/xml
-- **Accept**: application/xml, application/json
+- **Accept**: Not defined
 
 
 ### HTTP response details
 | Status code | Description | Response headers |
 |-------------|-------------|------------------|
-| **200** | successful operation |  -  |
+| **200** | Successful operation |  -  |
 | **405** | Invalid input |  -  |
 
 
@@ -109,7 +110,7 @@ import org.openapitools.client.api.PetApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
         
         // Configure OAuth2 access token for authorization: petstore_auth
         OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
@@ -157,6 +158,7 @@ public class Example {
 ### HTTP response details
 | Status code | Description | Response headers |
 |-------------|-------------|------------------|
+| **200** | Successful operation |  -  |
 | **400** | Invalid pet value |  -  |
 
 
@@ -182,7 +184,7 @@ import org.openapitools.client.api.PetApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
         
         // Configure OAuth2 access token for authorization: petstore_auth
         OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
@@ -234,7 +236,7 @@ public class Example {
 
 ## findPetsByTags
 
-> List&lt;Pet&gt; findPetsByTags(tags)
+> Set&lt;Pet&gt; findPetsByTags(tags)
 
 Finds Pets by tags
 
@@ -254,16 +256,16 @@ import org.openapitools.client.api.PetApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
         
         // Configure OAuth2 access token for authorization: petstore_auth
         OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
         petstore_auth.setAccessToken("YOUR ACCESS TOKEN");
 
         PetApi apiInstance = new PetApi(defaultClient);
-        List<String> tags = Arrays.asList(); // List<String> | Tags to filter by
+        Set<String> tags = Arrays.asList(); // Set<String> | Tags to filter by
         try {
-            List<Pet> result = apiInstance.findPetsByTags(tags);
+            Set<Pet> result = apiInstance.findPetsByTags(tags);
             System.out.println(result);
         } catch (ApiException e) {
             System.err.println("Exception when calling PetApi#findPetsByTags");
@@ -281,11 +283,11 @@ public class Example {
 
 | Name | Type | Description  | Notes |
 |------------- | ------------- | ------------- | -------------|
-| **tags** | [**List&lt;String&gt;**](String.md)| Tags to filter by | |
+| **tags** | [**Set&lt;String&gt;**](String.md)| Tags to filter by | |
 
 ### Return type
 
-[**List&lt;Pet&gt;**](Pet.md)
+[**Set&lt;Pet&gt;**](Pet.md)
 
 ### Authorization
 
@@ -326,7 +328,7 @@ import org.openapitools.client.api.PetApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
         
         // Configure API key authorization: api_key
         ApiKeyAuth api_key = (ApiKeyAuth) defaultClient.getAuthentication("api_key");
@@ -381,7 +383,7 @@ public class Example {
 
 ## updatePet
 
-> Pet updatePet(pet)
+> void updatePet(pet)
 
 Update an existing pet
 
@@ -401,7 +403,7 @@ import org.openapitools.client.api.PetApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
         
         // Configure OAuth2 access token for authorization: petstore_auth
         OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
@@ -410,7 +412,7 @@ public class Example {
         PetApi apiInstance = new PetApi(defaultClient);
         Pet pet = new Pet(); // Pet | Pet object that needs to be added to the store
         try {
-            Pet result = apiInstance.updatePet(pet);
+            void result = apiInstance.updatePet(pet);
             System.out.println(result);
         } catch (ApiException e) {
             System.err.println("Exception when calling PetApi#updatePet");
@@ -432,7 +434,7 @@ public class Example {
 
 ### Return type
 
-[**Pet**](Pet.md)
+[**void**](Void.md)
 
 ### Authorization
 
@@ -441,13 +443,13 @@ public class Example {
 ### HTTP request headers
 
 - **Content-Type**: application/json, application/xml
-- **Accept**: application/xml, application/json
+- **Accept**: Not defined
 
 
 ### HTTP response details
 | Status code | Description | Response headers |
 |-------------|-------------|------------------|
-| **200** | successful operation |  -  |
+| **200** | Successful operation |  -  |
 | **400** | Invalid ID supplied |  -  |
 | **404** | Pet not found |  -  |
 | **405** | Validation exception |  -  |
@@ -475,7 +477,7 @@ import org.openapitools.client.api.PetApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
         
         // Configure OAuth2 access token for authorization: petstore_auth
         OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
@@ -525,6 +527,7 @@ public class Example {
 ### HTTP response details
 | Status code | Description | Response headers |
 |-------------|-------------|------------------|
+| **200** | Successful operation |  -  |
 | **405** | Invalid input |  -  |
 
 
@@ -550,7 +553,7 @@ import org.openapitools.client.api.PetApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
         
         // Configure OAuth2 access token for authorization: petstore_auth
         OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
@@ -602,3 +605,78 @@ public class Example {
 |-------------|-------------|------------------|
 | **200** | successful operation |  -  |
 
+
+## uploadFileWithRequiredFile
+
+> ModelApiResponse uploadFileWithRequiredFile(petId, requiredFile, additionalMetadata)
+
+uploads an image (required)
+
+
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.auth.*;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.PetApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+        
+        // Configure OAuth2 access token for authorization: petstore_auth
+        OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
+        petstore_auth.setAccessToken("YOUR ACCESS TOKEN");
+
+        PetApi apiInstance = new PetApi(defaultClient);
+        Long petId = 56L; // Long | ID of pet to update
+        File requiredFile = new File("/path/to/file"); // File | file to upload
+        String additionalMetadata = "additionalMetadata_example"; // String | Additional data to pass to server
+        try {
+            ModelApiResponse result = apiInstance.uploadFileWithRequiredFile(petId, requiredFile, additionalMetadata);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling PetApi#uploadFileWithRequiredFile");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **petId** | **Long**| ID of pet to update | |
+| **requiredFile** | **File**| file to upload | |
+| **additionalMetadata** | **String**| Additional data to pass to server | [optional] |
+
+### Return type
+
+[**ModelApiResponse**](ModelApiResponse.md)
+
+### Authorization
+
+[petstore_auth](../README.md#petstore_auth)
+
+### HTTP request headers
+
+- **Content-Type**: multipart/form-data
+- **Accept**: application/json
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful operation |  -  |
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/ReadOnlyFirst.md b/samples/client/petstore/java/microprofile-rest-client/docs/ReadOnlyFirst.md
new file mode 100644
index 00000000000..ad6af7ee155
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/ReadOnlyFirst.md
@@ -0,0 +1,14 @@
+
+
+# ReadOnlyFirst
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**bar** | **String** |  |  [optional] [readonly] |
+|**baz** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/SingleRefType.md b/samples/client/petstore/java/microprofile-rest-client/docs/SingleRefType.md
new file mode 100644
index 00000000000..cc269bb871f
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/SingleRefType.md
@@ -0,0 +1,13 @@
+
+
+# SingleRefType
+
+## Enum
+
+
+* `ADMIN` (value: `"admin"`)
+
+* `USER` (value: `"user"`)
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/SpecialModelName.md b/samples/client/petstore/java/microprofile-rest-client/docs/SpecialModelName.md
new file mode 100644
index 00000000000..4b6a06e3622
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/SpecialModelName.md
@@ -0,0 +1,13 @@
+
+
+# SpecialModelName
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**$specialPropertyName** | **Long** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/StoreApi.md b/samples/client/petstore/java/microprofile-rest-client/docs/StoreApi.md
index ae64b8574e2..7e03edf04b7 100644
--- a/samples/client/petstore/java/microprofile-rest-client/docs/StoreApi.md
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/StoreApi.md
@@ -1,12 +1,12 @@
 # StoreApi
 
-All URIs are relative to *http://petstore.swagger.io/v2*
+All URIs are relative to *http://petstore.swagger.io:80/v2*
 
 | Method | HTTP request | Description |
 |------------- | ------------- | -------------|
-| [**deleteOrder**](StoreApi.md#deleteOrder) | **DELETE** /store/order/{orderId} | Delete purchase order by ID |
+| [**deleteOrder**](StoreApi.md#deleteOrder) | **DELETE** /store/order/{order_id} | Delete purchase order by ID |
 | [**getInventory**](StoreApi.md#getInventory) | **GET** /store/inventory | Returns pet inventories by status |
-| [**getOrderById**](StoreApi.md#getOrderById) | **GET** /store/order/{orderId} | Find purchase order by ID |
+| [**getOrderById**](StoreApi.md#getOrderById) | **GET** /store/order/{order_id} | Find purchase order by ID |
 | [**placeOrder**](StoreApi.md#placeOrder) | **POST** /store/order | Place an order for a pet |
 
 
@@ -32,7 +32,7 @@ import org.openapitools.client.api.StoreApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         StoreApi apiInstance = new StoreApi(defaultClient);
         String orderId = "orderId_example"; // String | ID of the order that needs to be deleted
@@ -100,7 +100,7 @@ import org.openapitools.client.api.StoreApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
         
         // Configure API key authorization: api_key
         ApiKeyAuth api_key = (ApiKeyAuth) defaultClient.getAuthentication("api_key");
@@ -168,7 +168,7 @@ import org.openapitools.client.api.StoreApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         StoreApi apiInstance = new StoreApi(defaultClient);
         Long orderId = 56L; // Long | ID of pet that needs to be fetched
@@ -236,7 +236,7 @@ import org.openapitools.client.api.StoreApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         StoreApi apiInstance = new StoreApi(defaultClient);
         Order order = new Order(); // Order | order placed for purchasing the pet
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/Tag.md b/samples/client/petstore/java/microprofile-rest-client/docs/Tag.md
index abfde4afb50..5088b2dd1c3 100644
--- a/samples/client/petstore/java/microprofile-rest-client/docs/Tag.md
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/Tag.md
@@ -2,7 +2,6 @@
 
 # Tag
 
-A tag for a pet
 
 ## Properties
 
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/TestInlineFreeformAdditionalPropertiesRequest.md b/samples/client/petstore/java/microprofile-rest-client/docs/TestInlineFreeformAdditionalPropertiesRequest.md
new file mode 100644
index 00000000000..dc066e6c7da
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/TestInlineFreeformAdditionalPropertiesRequest.md
@@ -0,0 +1,13 @@
+
+
+# TestInlineFreeformAdditionalPropertiesRequest
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+|**someProperty** | **String** |  |  [optional] |
+
+
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/User.md b/samples/client/petstore/java/microprofile-rest-client/docs/User.md
index 426845227bd..08813e4b10b 100644
--- a/samples/client/petstore/java/microprofile-rest-client/docs/User.md
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/User.md
@@ -2,7 +2,6 @@
 
 # User
 
-A User who is purchasing from the pet store
 
 ## Properties
 
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/UserApi.md b/samples/client/petstore/java/microprofile-rest-client/docs/UserApi.md
index 89c1bfc6026..d82f8da184b 100644
--- a/samples/client/petstore/java/microprofile-rest-client/docs/UserApi.md
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/UserApi.md
@@ -1,6 +1,6 @@
 # UserApi
 
-All URIs are relative to *http://petstore.swagger.io/v2*
+All URIs are relative to *http://petstore.swagger.io:80/v2*
 
 | Method | HTTP request | Description |
 |------------- | ------------- | -------------|
@@ -30,20 +30,13 @@ This can only be done by the logged in user.
 import org.openapitools.client.ApiClient;
 import org.openapitools.client.ApiException;
 import org.openapitools.client.Configuration;
-import org.openapitools.client.auth.*;
 import org.openapitools.client.models.*;
 import org.openapitools.client.api.UserApi;
 
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
-        
-        // Configure API key authorization: api_key
-        ApiKeyAuth api_key = (ApiKeyAuth) defaultClient.getAuthentication("api_key");
-        api_key.setApiKey("YOUR API KEY");
-        // Uncomment the following line to set a prefix for the API key, e.g. "Token" (defaults to null)
-        //api_key.setApiKeyPrefix("Token");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         UserApi apiInstance = new UserApi(defaultClient);
         User user = new User(); // User | Created user object
@@ -74,7 +67,7 @@ public class Example {
 
 ### Authorization
 
-[api_key](../README.md#api_key)
+No authorization required
 
 ### HTTP request headers
 
@@ -103,20 +96,13 @@ Creates list of users with given input array
 import org.openapitools.client.ApiClient;
 import org.openapitools.client.ApiException;
 import org.openapitools.client.Configuration;
-import org.openapitools.client.auth.*;
 import org.openapitools.client.models.*;
 import org.openapitools.client.api.UserApi;
 
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
-        
-        // Configure API key authorization: api_key
-        ApiKeyAuth api_key = (ApiKeyAuth) defaultClient.getAuthentication("api_key");
-        api_key.setApiKey("YOUR API KEY");
-        // Uncomment the following line to set a prefix for the API key, e.g. "Token" (defaults to null)
-        //api_key.setApiKeyPrefix("Token");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         UserApi apiInstance = new UserApi(defaultClient);
         List<User> user = Arrays.asList(); // List<User> | List of user object
@@ -147,7 +133,7 @@ public class Example {
 
 ### Authorization
 
-[api_key](../README.md#api_key)
+No authorization required
 
 ### HTTP request headers
 
@@ -176,20 +162,13 @@ Creates list of users with given input array
 import org.openapitools.client.ApiClient;
 import org.openapitools.client.ApiException;
 import org.openapitools.client.Configuration;
-import org.openapitools.client.auth.*;
 import org.openapitools.client.models.*;
 import org.openapitools.client.api.UserApi;
 
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
-        
-        // Configure API key authorization: api_key
-        ApiKeyAuth api_key = (ApiKeyAuth) defaultClient.getAuthentication("api_key");
-        api_key.setApiKey("YOUR API KEY");
-        // Uncomment the following line to set a prefix for the API key, e.g. "Token" (defaults to null)
-        //api_key.setApiKeyPrefix("Token");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         UserApi apiInstance = new UserApi(defaultClient);
         List<User> user = Arrays.asList(); // List<User> | List of user object
@@ -220,7 +199,7 @@ public class Example {
 
 ### Authorization
 
-[api_key](../README.md#api_key)
+No authorization required
 
 ### HTTP request headers
 
@@ -249,20 +228,13 @@ This can only be done by the logged in user.
 import org.openapitools.client.ApiClient;
 import org.openapitools.client.ApiException;
 import org.openapitools.client.Configuration;
-import org.openapitools.client.auth.*;
 import org.openapitools.client.models.*;
 import org.openapitools.client.api.UserApi;
 
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
-        
-        // Configure API key authorization: api_key
-        ApiKeyAuth api_key = (ApiKeyAuth) defaultClient.getAuthentication("api_key");
-        api_key.setApiKey("YOUR API KEY");
-        // Uncomment the following line to set a prefix for the API key, e.g. "Token" (defaults to null)
-        //api_key.setApiKeyPrefix("Token");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         UserApi apiInstance = new UserApi(defaultClient);
         String username = "username_example"; // String | The name that needs to be deleted
@@ -293,7 +265,7 @@ public class Example {
 
 ### Authorization
 
-[api_key](../README.md#api_key)
+No authorization required
 
 ### HTTP request headers
 
@@ -329,7 +301,7 @@ import org.openapitools.client.api.UserApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         UserApi apiInstance = new UserApi(defaultClient);
         String username = "username_example"; // String | The name that needs to be fetched. Use user1 for testing.
@@ -397,7 +369,7 @@ import org.openapitools.client.api.UserApi;
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         UserApi apiInstance = new UserApi(defaultClient);
         String username = "username_example"; // String | The user name for login
@@ -441,7 +413,7 @@ No authorization required
 ### HTTP response details
 | Status code | Description | Response headers |
 |-------------|-------------|------------------|
-| **200** | successful operation |  * Set-Cookie - Cookie authentication key for use with the &#x60;api_key&#x60; apiKey authentication. <br>  * X-Rate-Limit - calls per hour allowed by the user <br>  * X-Expires-After - date in UTC when token expires <br>  |
+| **200** | successful operation |  * X-Rate-Limit - calls per hour allowed by the user <br>  * X-Expires-After - date in UTC when token expires <br>  |
 | **400** | Invalid username/password supplied |  -  |
 
 
@@ -460,20 +432,13 @@ Logs out current logged in user session
 import org.openapitools.client.ApiClient;
 import org.openapitools.client.ApiException;
 import org.openapitools.client.Configuration;
-import org.openapitools.client.auth.*;
 import org.openapitools.client.models.*;
 import org.openapitools.client.api.UserApi;
 
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
-        
-        // Configure API key authorization: api_key
-        ApiKeyAuth api_key = (ApiKeyAuth) defaultClient.getAuthentication("api_key");
-        api_key.setApiKey("YOUR API KEY");
-        // Uncomment the following line to set a prefix for the API key, e.g. "Token" (defaults to null)
-        //api_key.setApiKeyPrefix("Token");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         UserApi apiInstance = new UserApi(defaultClient);
         try {
@@ -500,7 +465,7 @@ This endpoint does not need any parameter.
 
 ### Authorization
 
-[api_key](../README.md#api_key)
+No authorization required
 
 ### HTTP request headers
 
@@ -529,20 +494,13 @@ This can only be done by the logged in user.
 import org.openapitools.client.ApiClient;
 import org.openapitools.client.ApiException;
 import org.openapitools.client.Configuration;
-import org.openapitools.client.auth.*;
 import org.openapitools.client.models.*;
 import org.openapitools.client.api.UserApi;
 
 public class Example {
     public static void main(String[] args) {
         ApiClient defaultClient = Configuration.getDefaultApiClient();
-        defaultClient.setBasePath("http://petstore.swagger.io/v2");
-        
-        // Configure API key authorization: api_key
-        ApiKeyAuth api_key = (ApiKeyAuth) defaultClient.getAuthentication("api_key");
-        api_key.setApiKey("YOUR API KEY");
-        // Uncomment the following line to set a prefix for the API key, e.g. "Token" (defaults to null)
-        //api_key.setApiKeyPrefix("Token");
+        defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
 
         UserApi apiInstance = new UserApi(defaultClient);
         String username = "username_example"; // String | name that need to be deleted
@@ -575,7 +533,7 @@ public class Example {
 
 ### Authorization
 
-[api_key](../README.md#api_key)
+No authorization required
 
 ### HTTP request headers
 
diff --git a/samples/client/petstore/java/microprofile-rest-client/pom.xml b/samples/client/petstore/java/microprofile-rest-client/pom.xml
index 6dee8d3a89b..f3bb0cf3c40 100644
--- a/samples/client/petstore/java/microprofile-rest-client/pom.xml
+++ b/samples/client/petstore/java/microprofile-rest-client/pom.xml
@@ -4,7 +4,7 @@
   <artifactId>microprofile-rest-client</artifactId>
   <packaging>jar</packaging>
   <name>microprofile-rest-client</name>
-  <description>This is a sample server Petstore server. For this sample, you can use the api key &#x60;special-key&#x60; to test the authorization filters.</description>
+  <description>This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \&quot; \\</description>
   <version>1.0.0</version>
   <build>
     <sourceDirectory>src/main/java</sourceDirectory>
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/AnotherFakeApi.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/AnotherFakeApi.java
new file mode 100644
index 00000000000..a15c245c849
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/AnotherFakeApi.java
@@ -0,0 +1,54 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.api;
+
+import org.openapitools.client.model.Client;
+
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import javax.ws.rs.*;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.MediaType;
+import org.apache.cxf.jaxrs.ext.multipart.*;
+
+
+import org.eclipse.microprofile.rest.client.annotation.RegisterProvider;
+import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
+
+/**
+ * OpenAPI Petstore
+ *
+ * <p>This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ */
+
+@RegisterRestClient(configKey="anotherfake-api")
+@RegisterProvider(ApiExceptionMapper.class)
+@Path("/another-fake/dummy")
+public interface AnotherFakeApi  {
+
+    /**
+     * To test special tags
+     *
+     * To test special tags and operation ID starting with number
+     *
+     */
+    @PATCH
+    
+    @Consumes({ "application/json" })
+    @Produces({ "application/json" })
+    Client call123testSpecialTags(Client client) throws ApiException, ProcessingException;
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/ApiException.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/ApiException.java
index 13fb50ad633..06a1cc2eaed 100644
--- a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/ApiException.java
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/ApiException.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/ApiExceptionMapper.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/ApiExceptionMapper.java
index 51c2aa50a62..323e30a2c52 100644
--- a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/ApiExceptionMapper.java
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/ApiExceptionMapper.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/DefaultApi.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/DefaultApi.java
new file mode 100644
index 00000000000..1ca1a836550
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/DefaultApi.java
@@ -0,0 +1,47 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.api;
+
+import org.openapitools.client.model.FooGetDefaultResponse;
+
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import javax.ws.rs.*;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.MediaType;
+import org.apache.cxf.jaxrs.ext.multipart.*;
+
+
+import org.eclipse.microprofile.rest.client.annotation.RegisterProvider;
+import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
+
+/**
+ * OpenAPI Petstore
+ *
+ * <p>This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ */
+
+@RegisterRestClient(configKey="default-api")
+@RegisterProvider(ApiExceptionMapper.class)
+@Path("/foo")
+public interface DefaultApi  {
+
+    @GET
+    
+    @Produces({ "application/json" })
+    FooGetDefaultResponse fooGet() throws ApiException, ProcessingException;
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/FakeApi.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/FakeApi.java
new file mode 100644
index 00000000000..411aebd5d17
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/FakeApi.java
@@ -0,0 +1,237 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.api;
+
+import java.math.BigDecimal;
+import org.openapitools.client.model.ChildWithNullable;
+import org.openapitools.client.model.Client;
+import java.util.Date;
+import org.openapitools.client.model.EnumClass;
+import org.openapitools.client.model.FakeBigDecimalMap200Response;
+import java.io.File;
+import org.openapitools.client.model.FileSchemaTestClass;
+import org.openapitools.client.model.HealthCheckResult;
+import org.openapitools.client.model.OuterComposite;
+import org.openapitools.client.model.OuterObjectWithEnumProperty;
+import org.openapitools.client.model.Pet;
+import org.openapitools.client.model.TestInlineFreeformAdditionalPropertiesRequest;
+import org.openapitools.client.model.User;
+
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import javax.ws.rs.*;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.MediaType;
+import org.apache.cxf.jaxrs.ext.multipart.*;
+
+
+import org.eclipse.microprofile.rest.client.annotation.RegisterProvider;
+import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
+
+/**
+ * OpenAPI Petstore
+ *
+ * <p>This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ */
+
+@RegisterRestClient(configKey="fake-api")
+@RegisterProvider(ApiExceptionMapper.class)
+@Path("/fake")
+public interface FakeApi  {
+
+    @GET
+    @Path("/BigDecimalMap")
+    @Produces({ "*/*" })
+    FakeBigDecimalMap200Response fakeBigDecimalMap() throws ApiException, ProcessingException;
+
+    /**
+     * Health check endpoint
+     *
+     */
+    @GET
+    @Path("/health")
+    @Produces({ "application/json" })
+    HealthCheckResult fakeHealthGet() throws ApiException, ProcessingException;
+
+    /**
+     * test http signature authentication
+     *
+     */
+    @GET
+    @Path("/http-signature-test")
+    @Consumes({ "application/json", "application/xml" })
+    void fakeHttpSignatureTest(Pet pet, @QueryParam("query_1") String query1, @HeaderParam("header_1")  String header1) throws ApiException, ProcessingException;
+
+    @POST
+    @Path("/outer/boolean")
+    @Consumes({ "application/json" })
+    @Produces({ "*/*" })
+    Boolean fakeOuterBooleanSerialize(Boolean body) throws ApiException, ProcessingException;
+
+    @POST
+    @Path("/outer/composite")
+    @Consumes({ "application/json" })
+    @Produces({ "*/*" })
+    OuterComposite fakeOuterCompositeSerialize(OuterComposite outerComposite) throws ApiException, ProcessingException;
+
+    @POST
+    @Path("/outer/number")
+    @Consumes({ "application/json" })
+    @Produces({ "*/*" })
+    BigDecimal fakeOuterNumberSerialize(BigDecimal body) throws ApiException, ProcessingException;
+
+    @POST
+    @Path("/outer/string")
+    @Consumes({ "application/json" })
+    @Produces({ "*/*" })
+    String fakeOuterStringSerialize(String body) throws ApiException, ProcessingException;
+
+    @POST
+    @Path("/property/enum-int")
+    @Consumes({ "application/json" })
+    @Produces({ "*/*" })
+    OuterObjectWithEnumProperty fakePropertyEnumIntegerSerialize(OuterObjectWithEnumProperty outerObjectWithEnumProperty) throws ApiException, ProcessingException;
+
+    /**
+     * test referenced additionalProperties
+     *
+     * 
+     *
+     */
+    @POST
+    @Path("/additionalProperties-reference")
+    @Consumes({ "application/json" })
+    void testAdditionalPropertiesReference(Map<String, Object> requestBody) throws ApiException, ProcessingException;
+
+    @PUT
+    @Path("/body-with-binary")
+    @Consumes({ "image/png" })
+    void testBodyWithBinary(File body) throws ApiException, ProcessingException;
+
+    @PUT
+    @Path("/body-with-file-schema")
+    @Consumes({ "application/json" })
+    void testBodyWithFileSchema(FileSchemaTestClass fileSchemaTestClass) throws ApiException, ProcessingException;
+
+    @PUT
+    @Path("/body-with-query-params")
+    @Consumes({ "application/json" })
+    void testBodyWithQueryParams(@QueryParam("query") String query, User user) throws ApiException, ProcessingException;
+
+    /**
+     * To test \&quot;client\&quot; model
+     *
+     * To test \&quot;client\&quot; model
+     *
+     */
+    @PATCH
+    
+    @Consumes({ "application/json" })
+    @Produces({ "application/json" })
+    Client testClientModel(Client client) throws ApiException, ProcessingException;
+
+    /**
+     * 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 
+     *
+     */
+    @POST
+    
+    @Consumes({ "application/x-www-form-urlencoded" })
+    void testEndpointParameters(@Multipart(value = "number")  BigDecimal number, @Multipart(value = "double")  Double _double, @Multipart(value = "pattern_without_delimiter")  String patternWithoutDelimiter, @Multipart(value = "byte")  byte[] _byte, @Multipart(value = "integer", required = false)  Integer integer, @Multipart(value = "int32", required = false)  Integer int32, @Multipart(value = "int64", required = false)  Long int64, @Multipart(value = "float", required = false)  Float _float, @Multipart(value = "string", required = false)  String string,  @Multipart(value = "binary" , required = false) Attachment binaryDetail, @Multipart(value = "date", required = false)  Date date, @Multipart(value = "dateTime", required = false)  Date dateTime, @Multipart(value = "password", required = false)  String password, @Multipart(value = "callback", required = false)  String paramCallback) throws ApiException, ProcessingException;
+
+    /**
+     * To test enum parameters
+     *
+     * To test enum parameters
+     *
+     */
+    @GET
+    
+    @Consumes({ "application/x-www-form-urlencoded" })
+    void testEnumParameters(@HeaderParam("enum_header_string_array")  List<String> enumHeaderStringArray, @HeaderParam("enum_header_string")  String enumHeaderString, @QueryParam("enum_query_string_array") List<String> enumQueryStringArray, @QueryParam("enum_query_string") @DefaultValue("-efg") String enumQueryString, @QueryParam("enum_query_integer") Integer enumQueryInteger, @QueryParam("enum_query_double") Double enumQueryDouble, @QueryParam("enum_query_model_array") List<EnumClass> enumQueryModelArray, @Multipart(value = "enum_form_string_array", required = false)  List<String> enumFormStringArray, @Multipart(value = "enum_form_string", required = false)  String enumFormString) throws ApiException, ProcessingException;
+
+    /**
+     * Fake endpoint to test group parameters (optional)
+     *
+     * Fake endpoint to test group parameters (optional)
+     *
+     */
+    @DELETE
+    
+    void testGroupParameters(@QueryParam("required_string_group") Integer requiredStringGroup, @HeaderParam("required_boolean_group")  Boolean requiredBooleanGroup, @QueryParam("required_int64_group") Long requiredInt64Group, @QueryParam("string_group") Integer stringGroup, @HeaderParam("boolean_group")  Boolean booleanGroup, @QueryParam("int64_group") Long int64Group) throws ApiException, ProcessingException;
+
+    /**
+     * test inline additionalProperties
+     *
+     * 
+     *
+     */
+    @POST
+    @Path("/inline-additionalProperties")
+    @Consumes({ "application/json" })
+    void testInlineAdditionalProperties(Map<String, String> requestBody) throws ApiException, ProcessingException;
+
+    /**
+     * test inline free-form additionalProperties
+     *
+     * 
+     *
+     */
+    @POST
+    @Path("/inline-freeform-additionalProperties")
+    @Consumes({ "application/json" })
+    void testInlineFreeformAdditionalProperties(TestInlineFreeformAdditionalPropertiesRequest testInlineFreeformAdditionalPropertiesRequest) throws ApiException, ProcessingException;
+
+    /**
+     * test json serialization of form data
+     *
+     * 
+     *
+     */
+    @GET
+    @Path("/jsonFormData")
+    @Consumes({ "application/x-www-form-urlencoded" })
+    void testJsonFormData(@Multipart(value = "param")  String param, @Multipart(value = "param2")  String param2) throws ApiException, ProcessingException;
+
+    /**
+     * test nullable parent property
+     *
+     * 
+     *
+     */
+    @POST
+    @Path("/nullable")
+    @Consumes({ "application/json" })
+    void testNullable(ChildWithNullable childWithNullable) throws ApiException, ProcessingException;
+
+    @PUT
+    @Path("/test-query-parameters")
+    void testQueryParameterCollectionFormat(@QueryParam("pipe") List<String> pipe, @QueryParam("ioutil") List<String> ioutil, @QueryParam("http") List<String> http, @QueryParam("url") List<String> url, @QueryParam("context") List<String> context, @QueryParam("allowEmpty") String allowEmpty, @QueryParam("language") Map<String, String> language) throws ApiException, ProcessingException;
+
+    /**
+     * test referenced string map
+     *
+     * 
+     *
+     */
+    @POST
+    @Path("/stringMap-reference")
+    @Consumes({ "application/json" })
+    void testStringMapReference(Map<String, String> requestBody) throws ApiException, ProcessingException;
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
new file mode 100644
index 00000000000..ec882fa3ce5
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
@@ -0,0 +1,54 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.api;
+
+import org.openapitools.client.model.Client;
+
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import javax.ws.rs.*;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.MediaType;
+import org.apache.cxf.jaxrs.ext.multipart.*;
+
+
+import org.eclipse.microprofile.rest.client.annotation.RegisterProvider;
+import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
+
+/**
+ * OpenAPI Petstore
+ *
+ * <p>This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ */
+
+@RegisterRestClient(configKey="fakeclassnametags123-api")
+@RegisterProvider(ApiExceptionMapper.class)
+@Path("/fake_classname_test")
+public interface FakeClassnameTags123Api  {
+
+    /**
+     * To test class name in snake case
+     *
+     * To test class name in snake case
+     *
+     */
+    @PATCH
+    
+    @Consumes({ "application/json" })
+    @Produces({ "application/json" })
+    Client testClassname(Client client) throws ApiException, ProcessingException;
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/PetApi.java
index 49b83482426..f5ce26c6765 100644
--- a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/PetApi.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -15,6 +15,7 @@ package org.openapitools.client.api;
 import java.io.File;
 import org.openapitools.client.model.ModelApiResponse;
 import org.openapitools.client.model.Pet;
+import java.util.Set;
 
 import java.io.InputStream;
 import java.io.OutputStream;
@@ -33,13 +34,13 @@ import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
 /**
  * OpenAPI Petstore
  *
- * <p>This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * <p>This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  */
 
 @RegisterRestClient(configKey="pet-api")
 @RegisterProvider(ApiExceptionMapper.class)
-@Path("/pet")
+@Path("")
 public interface PetApi  {
 
     /**
@@ -49,10 +50,9 @@ public interface PetApi  {
      *
      */
     @POST
-    
+    @Path("/pet")
     @Consumes({ "application/json", "application/xml" })
-    @Produces({ "application/xml", "application/json" })
-    Pet addPet(Pet pet) throws ApiException, ProcessingException;
+    void addPet(Pet pet) throws ApiException, ProcessingException;
 
     /**
      * Deletes a pet
@@ -61,7 +61,7 @@ public interface PetApi  {
      *
      */
     @DELETE
-    @Path("/{petId}")
+    @Path("/pet/{petId}")
     void deletePet(@PathParam("petId") Long petId, @HeaderParam("api_key")  String apiKey) throws ApiException, ProcessingException;
 
     /**
@@ -71,7 +71,7 @@ public interface PetApi  {
      *
      */
     @GET
-    @Path("/findByStatus")
+    @Path("/pet/findByStatus")
     @Produces({ "application/xml", "application/json" })
     List<Pet> findPetsByStatus(@QueryParam("status") List<String> status) throws ApiException, ProcessingException;
 
@@ -84,9 +84,9 @@ public interface PetApi  {
      */
     @Deprecated
     @GET
-    @Path("/findByTags")
+    @Path("/pet/findByTags")
     @Produces({ "application/xml", "application/json" })
-    List<Pet> findPetsByTags(@QueryParam("tags") List<String> tags) throws ApiException, ProcessingException;
+    Set<Pet> findPetsByTags(@QueryParam("tags") Set<String> tags) throws ApiException, ProcessingException;
 
     /**
      * Find pet by ID
@@ -95,7 +95,7 @@ public interface PetApi  {
      *
      */
     @GET
-    @Path("/{petId}")
+    @Path("/pet/{petId}")
     @Produces({ "application/xml", "application/json" })
     Pet getPetById(@PathParam("petId") Long petId) throws ApiException, ProcessingException;
 
@@ -106,10 +106,9 @@ public interface PetApi  {
      *
      */
     @PUT
-    
+    @Path("/pet")
     @Consumes({ "application/json", "application/xml" })
-    @Produces({ "application/xml", "application/json" })
-    Pet updatePet(Pet pet) throws ApiException, ProcessingException;
+    void updatePet(Pet pet) throws ApiException, ProcessingException;
 
     /**
      * Updates a pet in the store with form data
@@ -118,7 +117,7 @@ public interface PetApi  {
      *
      */
     @POST
-    @Path("/{petId}")
+    @Path("/pet/{petId}")
     @Consumes({ "application/x-www-form-urlencoded" })
     void updatePetWithForm(@PathParam("petId") Long petId, @Multipart(value = "name", required = false)  String name, @Multipart(value = "status", required = false)  String status) throws ApiException, ProcessingException;
 
@@ -129,8 +128,20 @@ public interface PetApi  {
      *
      */
     @POST
-    @Path("/{petId}/uploadImage")
+    @Path("/pet/{petId}/uploadImage")
     @Consumes({ "multipart/form-data" })
     @Produces({ "application/json" })
     ModelApiResponse uploadFile(@PathParam("petId") Long petId, @Multipart(value = "additionalMetadata", required = false)  String additionalMetadata,  @Multipart(value = "file" , required = false) Attachment _fileDetail) throws ApiException, ProcessingException;
+
+    /**
+     * uploads an image (required)
+     *
+     * 
+     *
+     */
+    @POST
+    @Path("/fake/{petId}/uploadImageWithRequiredFile")
+    @Consumes({ "multipart/form-data" })
+    @Produces({ "application/json" })
+    ModelApiResponse uploadFileWithRequiredFile(@PathParam("petId") Long petId,  @Multipart(value = "requiredFile" ) Attachment requiredFileDetail, @Multipart(value = "additionalMetadata", required = false)  String additionalMetadata) throws ApiException, ProcessingException;
 }
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/StoreApi.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/StoreApi.java
index 84e982c9e01..d63a429c9e9 100644
--- a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/StoreApi.java
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/StoreApi.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -31,7 +31,7 @@ import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
 /**
  * OpenAPI Petstore
  *
- * <p>This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * <p>This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  */
 
@@ -47,8 +47,8 @@ public interface StoreApi  {
      *
      */
     @DELETE
-    @Path("/order/{orderId}")
-    void deleteOrder(@PathParam("orderId") String orderId) throws ApiException, ProcessingException;
+    @Path("/order/{order_id}")
+    void deleteOrder(@PathParam("order_id") String orderId) throws ApiException, ProcessingException;
 
     /**
      * Returns pet inventories by status
@@ -68,9 +68,9 @@ public interface StoreApi  {
      *
      */
     @GET
-    @Path("/order/{orderId}")
+    @Path("/order/{order_id}")
     @Produces({ "application/xml", "application/json" })
-    Order getOrderById(@PathParam("orderId") Long orderId) throws ApiException, ProcessingException;
+    Order getOrderById(@PathParam("order_id") Long orderId) throws ApiException, ProcessingException;
 
     /**
      * Place an order for a pet
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/UserApi.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/UserApi.java
index 4a30e10a9fb..d1088c95cff 100644
--- a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/UserApi.java
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/UserApi.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -32,7 +32,7 @@ import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
 /**
  * OpenAPI Petstore
  *
- * <p>This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * <p>This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  */
 
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/AdditionalPropertiesClass.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/AdditionalPropertiesClass.java
new file mode 100644
index 00000000000..9a40b7262f7
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/AdditionalPropertiesClass.java
@@ -0,0 +1,139 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Map;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class AdditionalPropertiesClass  {
+  
+  @JsonbProperty("map_property")
+  private Map<String, String> mapProperty = null;
+
+  @JsonbProperty("map_of_map_property")
+  private Map<String, Map<String, String>> mapOfMapProperty = null;
+
+  /**
+   * Get mapProperty
+   * @return mapProperty
+   **/
+  public Map<String, String> getMapProperty() {
+    return mapProperty;
+  }
+
+  /**
+   * Set mapProperty
+   */
+  public void setMapProperty(Map<String, String> mapProperty) {
+    this.mapProperty = mapProperty;
+  }
+
+  public AdditionalPropertiesClass mapProperty(Map<String, String> mapProperty) {
+    this.mapProperty = mapProperty;
+    return this;
+  }
+
+  public AdditionalPropertiesClass putMapPropertyItem(String key, String mapPropertyItem) {
+    if (this.mapProperty == null) {
+      this.mapProperty = new HashMap<>();
+    }
+    this.mapProperty.put(key, mapPropertyItem);
+    return this;
+  }
+
+  /**
+   * Get mapOfMapProperty
+   * @return mapOfMapProperty
+   **/
+  public Map<String, Map<String, String>> getMapOfMapProperty() {
+    return mapOfMapProperty;
+  }
+
+  /**
+   * Set mapOfMapProperty
+   */
+  public void setMapOfMapProperty(Map<String, Map<String, String>> mapOfMapProperty) {
+    this.mapOfMapProperty = mapOfMapProperty;
+  }
+
+  public AdditionalPropertiesClass mapOfMapProperty(Map<String, Map<String, String>> mapOfMapProperty) {
+    this.mapOfMapProperty = mapOfMapProperty;
+    return this;
+  }
+
+  public AdditionalPropertiesClass putMapOfMapPropertyItem(String key, Map<String, String> mapOfMapPropertyItem) {
+    if (this.mapOfMapProperty == null) {
+      this.mapOfMapProperty = new HashMap<>();
+    }
+    this.mapOfMapProperty.put(key, mapOfMapPropertyItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    AdditionalPropertiesClass additionalPropertiesClass = (AdditionalPropertiesClass) o;
+    return Objects.equals(this.mapProperty, additionalPropertiesClass.mapProperty) &&
+        Objects.equals(this.mapOfMapProperty, additionalPropertiesClass.mapOfMapProperty);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(mapProperty, mapOfMapProperty);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class AdditionalPropertiesClass {\n");
+    
+    sb.append("    mapProperty: ").append(toIndentedString(mapProperty)).append("\n");
+    sb.append("    mapOfMapProperty: ").append(toIndentedString(mapOfMapProperty)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/AllOfWithSingleRef.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/AllOfWithSingleRef.java
new file mode 100644
index 00000000000..80b81b328ca
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/AllOfWithSingleRef.java
@@ -0,0 +1,122 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import org.openapitools.client.model.SingleRefType;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class AllOfWithSingleRef  {
+  
+  @JsonbProperty("username")
+  private String username;
+
+  @JsonbProperty("SingleRefType")
+  private SingleRefType singleRefType;
+
+  /**
+   * Get username
+   * @return username
+   **/
+  public String getUsername() {
+    return username;
+  }
+
+  /**
+   * Set username
+   */
+  public void setUsername(String username) {
+    this.username = username;
+  }
+
+  public AllOfWithSingleRef username(String username) {
+    this.username = username;
+    return this;
+  }
+
+  /**
+   * Get singleRefType
+   * @return singleRefType
+   **/
+  public SingleRefType getSingleRefType() {
+    return singleRefType;
+  }
+
+  /**
+   * Set singleRefType
+   */
+  public void setSingleRefType(SingleRefType singleRefType) {
+    this.singleRefType = singleRefType;
+  }
+
+  public AllOfWithSingleRef singleRefType(SingleRefType singleRefType) {
+    this.singleRefType = singleRefType;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    AllOfWithSingleRef allOfWithSingleRef = (AllOfWithSingleRef) o;
+    return Objects.equals(this.username, allOfWithSingleRef.username) &&
+        Objects.equals(this.singleRefType, allOfWithSingleRef.singleRefType);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(username, singleRefType);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class AllOfWithSingleRef {\n");
+    
+    sb.append("    username: ").append(toIndentedString(username)).append("\n");
+    sb.append("    singleRefType: ").append(toIndentedString(singleRefType)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Animal.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Animal.java
new file mode 100644
index 00000000000..5b5e41797b1
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Animal.java
@@ -0,0 +1,121 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class Animal  {
+  
+  @JsonbProperty("className")
+  private String className;
+
+  @JsonbProperty("color")
+  private String color = "red";
+
+  /**
+   * Get className
+   * @return className
+   **/
+  public String getClassName() {
+    return className;
+  }
+
+  /**
+   * Set className
+   */
+  public void setClassName(String className) {
+    this.className = className;
+  }
+
+  public Animal className(String className) {
+    this.className = className;
+    return this;
+  }
+
+  /**
+   * Get color
+   * @return color
+   **/
+  public String getColor() {
+    return color;
+  }
+
+  /**
+   * Set color
+   */
+  public void setColor(String color) {
+    this.color = color;
+  }
+
+  public Animal color(String color) {
+    this.color = color;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Animal animal = (Animal) o;
+    return Objects.equals(this.className, animal.className) &&
+        Objects.equals(this.color, animal.color);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(className, color);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Animal {\n");
+    
+    sb.append("    className: ").append(toIndentedString(className)).append("\n");
+    sb.append("    color: ").append(toIndentedString(color)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnly.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnly.java
new file mode 100644
index 00000000000..7acf21a3c85
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnly.java
@@ -0,0 +1,108 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class ArrayOfArrayOfNumberOnly  {
+  
+  @JsonbProperty("ArrayArrayNumber")
+  private List<List<BigDecimal>> arrayArrayNumber = null;
+
+  /**
+   * Get arrayArrayNumber
+   * @return arrayArrayNumber
+   **/
+  public List<List<BigDecimal>> getArrayArrayNumber() {
+    return arrayArrayNumber;
+  }
+
+  /**
+   * Set arrayArrayNumber
+   */
+  public void setArrayArrayNumber(List<List<BigDecimal>> arrayArrayNumber) {
+    this.arrayArrayNumber = arrayArrayNumber;
+  }
+
+  public ArrayOfArrayOfNumberOnly arrayArrayNumber(List<List<BigDecimal>> arrayArrayNumber) {
+    this.arrayArrayNumber = arrayArrayNumber;
+    return this;
+  }
+
+  public ArrayOfArrayOfNumberOnly addArrayArrayNumberItem(List<BigDecimal> arrayArrayNumberItem) {
+    if (this.arrayArrayNumber == null) {
+      this.arrayArrayNumber = new ArrayList<>();
+    }
+    this.arrayArrayNumber.add(arrayArrayNumberItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ArrayOfArrayOfNumberOnly arrayOfArrayOfNumberOnly = (ArrayOfArrayOfNumberOnly) o;
+    return Objects.equals(this.arrayArrayNumber, arrayOfArrayOfNumberOnly.arrayArrayNumber);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(arrayArrayNumber);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ArrayOfArrayOfNumberOnly {\n");
+    
+    sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ArrayOfNumberOnly.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ArrayOfNumberOnly.java
new file mode 100644
index 00000000000..1b6cb911e51
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ArrayOfNumberOnly.java
@@ -0,0 +1,108 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class ArrayOfNumberOnly  {
+  
+  @JsonbProperty("ArrayNumber")
+  private List<BigDecimal> arrayNumber = null;
+
+  /**
+   * Get arrayNumber
+   * @return arrayNumber
+   **/
+  public List<BigDecimal> getArrayNumber() {
+    return arrayNumber;
+  }
+
+  /**
+   * Set arrayNumber
+   */
+  public void setArrayNumber(List<BigDecimal> arrayNumber) {
+    this.arrayNumber = arrayNumber;
+  }
+
+  public ArrayOfNumberOnly arrayNumber(List<BigDecimal> arrayNumber) {
+    this.arrayNumber = arrayNumber;
+    return this;
+  }
+
+  public ArrayOfNumberOnly addArrayNumberItem(BigDecimal arrayNumberItem) {
+    if (this.arrayNumber == null) {
+      this.arrayNumber = new ArrayList<>();
+    }
+    this.arrayNumber.add(arrayNumberItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ArrayOfNumberOnly arrayOfNumberOnly = (ArrayOfNumberOnly) o;
+    return Objects.equals(this.arrayNumber, arrayOfNumberOnly.arrayNumber);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(arrayNumber);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ArrayOfNumberOnly {\n");
+    
+    sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ArrayTest.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ArrayTest.java
new file mode 100644
index 00000000000..a1fe7d28258
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ArrayTest.java
@@ -0,0 +1,174 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.openapitools.client.model.ReadOnlyFirst;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class ArrayTest  {
+  
+  @JsonbProperty("array_of_string")
+  private List<String> arrayOfString = null;
+
+  @JsonbProperty("array_array_of_integer")
+  private List<List<Long>> arrayArrayOfInteger = null;
+
+  @JsonbProperty("array_array_of_model")
+  private List<List<ReadOnlyFirst>> arrayArrayOfModel = null;
+
+  /**
+   * Get arrayOfString
+   * @return arrayOfString
+   **/
+  public List<String> getArrayOfString() {
+    return arrayOfString;
+  }
+
+  /**
+   * Set arrayOfString
+   */
+  public void setArrayOfString(List<String> arrayOfString) {
+    this.arrayOfString = arrayOfString;
+  }
+
+  public ArrayTest arrayOfString(List<String> arrayOfString) {
+    this.arrayOfString = arrayOfString;
+    return this;
+  }
+
+  public ArrayTest addArrayOfStringItem(String arrayOfStringItem) {
+    if (this.arrayOfString == null) {
+      this.arrayOfString = new ArrayList<>();
+    }
+    this.arrayOfString.add(arrayOfStringItem);
+    return this;
+  }
+
+  /**
+   * Get arrayArrayOfInteger
+   * @return arrayArrayOfInteger
+   **/
+  public List<List<Long>> getArrayArrayOfInteger() {
+    return arrayArrayOfInteger;
+  }
+
+  /**
+   * Set arrayArrayOfInteger
+   */
+  public void setArrayArrayOfInteger(List<List<Long>> arrayArrayOfInteger) {
+    this.arrayArrayOfInteger = arrayArrayOfInteger;
+  }
+
+  public ArrayTest arrayArrayOfInteger(List<List<Long>> arrayArrayOfInteger) {
+    this.arrayArrayOfInteger = arrayArrayOfInteger;
+    return this;
+  }
+
+  public ArrayTest addArrayArrayOfIntegerItem(List<Long> arrayArrayOfIntegerItem) {
+    if (this.arrayArrayOfInteger == null) {
+      this.arrayArrayOfInteger = new ArrayList<>();
+    }
+    this.arrayArrayOfInteger.add(arrayArrayOfIntegerItem);
+    return this;
+  }
+
+  /**
+   * Get arrayArrayOfModel
+   * @return arrayArrayOfModel
+   **/
+  public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
+    return arrayArrayOfModel;
+  }
+
+  /**
+   * Set arrayArrayOfModel
+   */
+  public void setArrayArrayOfModel(List<List<ReadOnlyFirst>> arrayArrayOfModel) {
+    this.arrayArrayOfModel = arrayArrayOfModel;
+  }
+
+  public ArrayTest arrayArrayOfModel(List<List<ReadOnlyFirst>> arrayArrayOfModel) {
+    this.arrayArrayOfModel = arrayArrayOfModel;
+    return this;
+  }
+
+  public ArrayTest addArrayArrayOfModelItem(List<ReadOnlyFirst> arrayArrayOfModelItem) {
+    if (this.arrayArrayOfModel == null) {
+      this.arrayArrayOfModel = new ArrayList<>();
+    }
+    this.arrayArrayOfModel.add(arrayArrayOfModelItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ArrayTest arrayTest = (ArrayTest) o;
+    return Objects.equals(this.arrayOfString, arrayTest.arrayOfString) &&
+        Objects.equals(this.arrayArrayOfInteger, arrayTest.arrayArrayOfInteger) &&
+        Objects.equals(this.arrayArrayOfModel, arrayTest.arrayArrayOfModel);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(arrayOfString, arrayArrayOfInteger, arrayArrayOfModel);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ArrayTest {\n");
+    
+    sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
+    sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
+    sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Capitalization.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Capitalization.java
new file mode 100644
index 00000000000..440707e5286
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Capitalization.java
@@ -0,0 +1,224 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class Capitalization  {
+  
+  @JsonbProperty("smallCamel")
+  private String smallCamel;
+
+  @JsonbProperty("CapitalCamel")
+  private String capitalCamel;
+
+  @JsonbProperty("small_Snake")
+  private String smallSnake;
+
+  @JsonbProperty("Capital_Snake")
+  private String capitalSnake;
+
+  @JsonbProperty("SCA_ETH_Flow_Points")
+  private String scAETHFlowPoints;
+
+ /**
+  * Name of the pet 
+  */
+  @JsonbProperty("ATT_NAME")
+  private String ATT_NAME;
+
+  /**
+   * Get smallCamel
+   * @return smallCamel
+   **/
+  public String getSmallCamel() {
+    return smallCamel;
+  }
+
+  /**
+   * Set smallCamel
+   */
+  public void setSmallCamel(String smallCamel) {
+    this.smallCamel = smallCamel;
+  }
+
+  public Capitalization smallCamel(String smallCamel) {
+    this.smallCamel = smallCamel;
+    return this;
+  }
+
+  /**
+   * Get capitalCamel
+   * @return capitalCamel
+   **/
+  public String getCapitalCamel() {
+    return capitalCamel;
+  }
+
+  /**
+   * Set capitalCamel
+   */
+  public void setCapitalCamel(String capitalCamel) {
+    this.capitalCamel = capitalCamel;
+  }
+
+  public Capitalization capitalCamel(String capitalCamel) {
+    this.capitalCamel = capitalCamel;
+    return this;
+  }
+
+  /**
+   * Get smallSnake
+   * @return smallSnake
+   **/
+  public String getSmallSnake() {
+    return smallSnake;
+  }
+
+  /**
+   * Set smallSnake
+   */
+  public void setSmallSnake(String smallSnake) {
+    this.smallSnake = smallSnake;
+  }
+
+  public Capitalization smallSnake(String smallSnake) {
+    this.smallSnake = smallSnake;
+    return this;
+  }
+
+  /**
+   * Get capitalSnake
+   * @return capitalSnake
+   **/
+  public String getCapitalSnake() {
+    return capitalSnake;
+  }
+
+  /**
+   * Set capitalSnake
+   */
+  public void setCapitalSnake(String capitalSnake) {
+    this.capitalSnake = capitalSnake;
+  }
+
+  public Capitalization capitalSnake(String capitalSnake) {
+    this.capitalSnake = capitalSnake;
+    return this;
+  }
+
+  /**
+   * Get scAETHFlowPoints
+   * @return scAETHFlowPoints
+   **/
+  public String getScAETHFlowPoints() {
+    return scAETHFlowPoints;
+  }
+
+  /**
+   * Set scAETHFlowPoints
+   */
+  public void setScAETHFlowPoints(String scAETHFlowPoints) {
+    this.scAETHFlowPoints = scAETHFlowPoints;
+  }
+
+  public Capitalization scAETHFlowPoints(String scAETHFlowPoints) {
+    this.scAETHFlowPoints = scAETHFlowPoints;
+    return this;
+  }
+
+  /**
+   * Name of the pet 
+   * @return ATT_NAME
+   **/
+  public String getATTNAME() {
+    return ATT_NAME;
+  }
+
+  /**
+   * Set ATT_NAME
+   */
+  public void setATTNAME(String ATT_NAME) {
+    this.ATT_NAME = ATT_NAME;
+  }
+
+  public Capitalization ATT_NAME(String ATT_NAME) {
+    this.ATT_NAME = ATT_NAME;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Capitalization capitalization = (Capitalization) o;
+    return Objects.equals(this.smallCamel, capitalization.smallCamel) &&
+        Objects.equals(this.capitalCamel, capitalization.capitalCamel) &&
+        Objects.equals(this.smallSnake, capitalization.smallSnake) &&
+        Objects.equals(this.capitalSnake, capitalization.capitalSnake) &&
+        Objects.equals(this.scAETHFlowPoints, capitalization.scAETHFlowPoints) &&
+        Objects.equals(this.ATT_NAME, capitalization.ATT_NAME);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(smallCamel, capitalCamel, smallSnake, capitalSnake, scAETHFlowPoints, ATT_NAME);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Capitalization {\n");
+    
+    sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
+    sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
+    sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
+    sb.append("    capitalSnake: ").append(toIndentedString(capitalSnake)).append("\n");
+    sb.append("    scAETHFlowPoints: ").append(toIndentedString(scAETHFlowPoints)).append("\n");
+    sb.append("    ATT_NAME: ").append(toIndentedString(ATT_NAME)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Cat.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Cat.java
new file mode 100644
index 00000000000..ce0fe89e5bb
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Cat.java
@@ -0,0 +1,98 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import org.openapitools.client.model.Animal;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class Cat extends Animal {
+  
+  @JsonbProperty("declawed")
+  private Boolean declawed;
+
+  /**
+   * Get declawed
+   * @return declawed
+   **/
+  public Boolean getDeclawed() {
+    return declawed;
+  }
+
+  /**
+   * Set declawed
+   */
+  public void setDeclawed(Boolean declawed) {
+    this.declawed = declawed;
+  }
+
+  public Cat declawed(Boolean declawed) {
+    this.declawed = declawed;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Cat cat = (Cat) o;
+    return Objects.equals(this.declawed, cat.declawed) &&
+        super.equals(o);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(declawed, super.hashCode());
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Cat {\n");
+    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+    sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Category.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Category.java
index 5a53099479e..e72028194ba 100644
--- a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Category.java
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Category.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -24,10 +24,8 @@ import javax.json.bind.serializer.SerializationContext;
 import javax.json.stream.JsonGenerator;
 import javax.json.stream.JsonParser;
 import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
 
-/**
-  * A category for a pet
-  */
 
 public class Category  {
   
@@ -35,7 +33,7 @@ public class Category  {
   private Long id;
 
   @JsonbProperty("name")
-  private String name;
+  private String name = "default-name";
 
   /**
    * Get id
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ChildWithNullable.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ChildWithNullable.java
new file mode 100644
index 00000000000..39704940cb8
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ChildWithNullable.java
@@ -0,0 +1,98 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import org.openapitools.client.model.ParentWithNullable;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class ChildWithNullable extends ParentWithNullable {
+  
+  @JsonbProperty("otherProperty")
+  private String otherProperty;
+
+  /**
+   * Get otherProperty
+   * @return otherProperty
+   **/
+  public String getOtherProperty() {
+    return otherProperty;
+  }
+
+  /**
+   * Set otherProperty
+   */
+  public void setOtherProperty(String otherProperty) {
+    this.otherProperty = otherProperty;
+  }
+
+  public ChildWithNullable otherProperty(String otherProperty) {
+    this.otherProperty = otherProperty;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ChildWithNullable childWithNullable = (ChildWithNullable) o;
+    return Objects.equals(this.otherProperty, childWithNullable.otherProperty) &&
+        super.equals(o);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(otherProperty, super.hashCode());
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ChildWithNullable {\n");
+    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+    sb.append("    otherProperty: ").append(toIndentedString(otherProperty)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ClassModel.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ClassModel.java
new file mode 100644
index 00000000000..3f19ba4c89b
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ClassModel.java
@@ -0,0 +1,99 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+/**
+  * Model for testing model with \"_class\" property
+  */
+
+public class ClassModel  {
+  
+  @JsonbProperty("_class")
+  private String propertyClass;
+
+  /**
+   * Get propertyClass
+   * @return propertyClass
+   **/
+  public String getPropertyClass() {
+    return propertyClass;
+  }
+
+  /**
+   * Set propertyClass
+   */
+  public void setPropertyClass(String propertyClass) {
+    this.propertyClass = propertyClass;
+  }
+
+  public ClassModel propertyClass(String propertyClass) {
+    this.propertyClass = propertyClass;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ClassModel classModel = (ClassModel) o;
+    return Objects.equals(this.propertyClass, classModel.propertyClass);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(propertyClass);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ClassModel {\n");
+    
+    sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Client.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Client.java
new file mode 100644
index 00000000000..25902e22be2
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Client.java
@@ -0,0 +1,96 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class Client  {
+  
+  @JsonbProperty("client")
+  private String client;
+
+  /**
+   * Get client
+   * @return client
+   **/
+  public String getClient() {
+    return client;
+  }
+
+  /**
+   * Set client
+   */
+  public void setClient(String client) {
+    this.client = client;
+  }
+
+  public Client client(String client) {
+    this.client = client;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Client client = (Client) o;
+    return Objects.equals(this.client, client.client);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(client);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Client {\n");
+    
+    sb.append("    client: ").append(toIndentedString(client)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/DeprecatedObject.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/DeprecatedObject.java
new file mode 100644
index 00000000000..1a4638a275a
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/DeprecatedObject.java
@@ -0,0 +1,96 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class DeprecatedObject  {
+  
+  @JsonbProperty("name")
+  private String name;
+
+  /**
+   * Get name
+   * @return name
+   **/
+  public String getName() {
+    return name;
+  }
+
+  /**
+   * Set name
+   */
+  public void setName(String name) {
+    this.name = name;
+  }
+
+  public DeprecatedObject name(String name) {
+    this.name = name;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    DeprecatedObject deprecatedObject = (DeprecatedObject) o;
+    return Objects.equals(this.name, deprecatedObject.name);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(name);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class DeprecatedObject {\n");
+    
+    sb.append("    name: ").append(toIndentedString(name)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Dog.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Dog.java
new file mode 100644
index 00000000000..50ccc9b5f7c
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Dog.java
@@ -0,0 +1,98 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import org.openapitools.client.model.Animal;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class Dog extends Animal {
+  
+  @JsonbProperty("breed")
+  private String breed;
+
+  /**
+   * Get breed
+   * @return breed
+   **/
+  public String getBreed() {
+    return breed;
+  }
+
+  /**
+   * Set breed
+   */
+  public void setBreed(String breed) {
+    this.breed = breed;
+  }
+
+  public Dog breed(String breed) {
+    this.breed = breed;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Dog dog = (Dog) o;
+    return Objects.equals(this.breed, dog.breed) &&
+        super.equals(o);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(breed, super.hashCode());
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Dog {\n");
+    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+    sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/EnumArrays.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/EnumArrays.java
new file mode 100644
index 00000000000..29267b36bf1
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/EnumArrays.java
@@ -0,0 +1,216 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class EnumArrays  {
+  
+  @JsonbTypeSerializer(JustSymbolEnum.Serializer.class)
+  @JsonbTypeDeserializer(JustSymbolEnum.Deserializer.class)
+  public enum JustSymbolEnum {
+
+    GREATER_THAN_OR_EQUAL_TO(String.valueOf(">=")), DOLLAR(String.valueOf("$"));
+
+
+    String value;
+
+    JustSymbolEnum (String v) {
+        value = v;
+    }
+
+    public String value() {
+        return value;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(value);
+    }
+
+    public static final class Deserializer implements JsonbDeserializer<JustSymbolEnum> {
+        @Override
+        public JustSymbolEnum deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+            for (JustSymbolEnum b : JustSymbolEnum.values()) {
+                if (String.valueOf(b.value).equals(parser.getString())) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + parser.getString() + "'");
+        }
+    }
+
+    public static final class Serializer implements JsonbSerializer<JustSymbolEnum> {
+        @Override
+        public void serialize(JustSymbolEnum obj, JsonGenerator generator, SerializationContext ctx) {
+            generator.write(obj.value);
+        }
+    }
+  }
+
+  @JsonbProperty("just_symbol")
+  private JustSymbolEnum justSymbol;
+
+  @JsonbTypeSerializer(ArrayEnumEnum.Serializer.class)
+  @JsonbTypeDeserializer(ArrayEnumEnum.Deserializer.class)
+  public enum ArrayEnumEnum {
+
+    FISH(String.valueOf("fish")), CRAB(String.valueOf("crab"));
+
+
+    String value;
+
+    ArrayEnumEnum (String v) {
+        value = v;
+    }
+
+    public String value() {
+        return value;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(value);
+    }
+
+    public static final class Deserializer implements JsonbDeserializer<ArrayEnumEnum> {
+        @Override
+        public ArrayEnumEnum deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+            for (ArrayEnumEnum b : ArrayEnumEnum.values()) {
+                if (String.valueOf(b.value).equals(parser.getString())) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + parser.getString() + "'");
+        }
+    }
+
+    public static final class Serializer implements JsonbSerializer<ArrayEnumEnum> {
+        @Override
+        public void serialize(ArrayEnumEnum obj, JsonGenerator generator, SerializationContext ctx) {
+            generator.write(obj.value);
+        }
+    }
+  }
+
+  @JsonbProperty("array_enum")
+  private List<ArrayEnumEnum> arrayEnum = null;
+
+  /**
+   * Get justSymbol
+   * @return justSymbol
+   **/
+  public JustSymbolEnum getJustSymbol() {
+    return justSymbol;
+  }
+
+  /**
+   * Set justSymbol
+   */
+  public void setJustSymbol(JustSymbolEnum justSymbol) {
+    this.justSymbol = justSymbol;
+  }
+
+  public EnumArrays justSymbol(JustSymbolEnum justSymbol) {
+    this.justSymbol = justSymbol;
+    return this;
+  }
+
+  /**
+   * Get arrayEnum
+   * @return arrayEnum
+   **/
+  public List<ArrayEnumEnum> getArrayEnum() {
+    return arrayEnum;
+  }
+
+  /**
+   * Set arrayEnum
+   */
+  public void setArrayEnum(List<ArrayEnumEnum> arrayEnum) {
+    this.arrayEnum = arrayEnum;
+  }
+
+  public EnumArrays arrayEnum(List<ArrayEnumEnum> arrayEnum) {
+    this.arrayEnum = arrayEnum;
+    return this;
+  }
+
+  public EnumArrays addArrayEnumItem(ArrayEnumEnum arrayEnumItem) {
+    if (this.arrayEnum == null) {
+      this.arrayEnum = new ArrayList<>();
+    }
+    this.arrayEnum.add(arrayEnumItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    EnumArrays enumArrays = (EnumArrays) o;
+    return Objects.equals(this.justSymbol, enumArrays.justSymbol) &&
+        Objects.equals(this.arrayEnum, enumArrays.arrayEnum);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(justSymbol, arrayEnum);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class EnumArrays {\n");
+    
+    sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
+    sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/EnumClass.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/EnumClass.java
new file mode 100644
index 00000000000..e322dfe00e8
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/EnumClass.java
@@ -0,0 +1,77 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+/**
+ * Gets or Sets EnumClass
+ */
+@JsonbTypeSerializer(EnumClass.Serializer.class)
+@JsonbTypeDeserializer(EnumClass.Deserializer.class)
+public enum EnumClass {
+  
+  _ABC("_abc"),
+  
+  _EFG("-efg"),
+  
+  _XYZ_("(xyz)");
+
+  private String value;
+
+  EnumClass(String value) {
+    this.value = value;
+  }
+
+  @Override
+  public String toString() {
+    return String.valueOf(value);
+  }
+
+  public static final class Deserializer implements JsonbDeserializer<EnumClass> {
+    @Override
+    public EnumClass deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+      return fromValue(parser.getString());
+    }
+  }
+
+  public static final class Serializer implements JsonbSerializer<EnumClass> {
+    @Override
+    public void serialize(EnumClass obj, JsonGenerator generator, SerializationContext ctx) {
+      generator.write(obj.value);
+    }
+  }
+
+  public static EnumClass fromValue(String text) {
+    for (EnumClass b : EnumClass.values()) {
+      if (String.valueOf(b.value).equals(text)) {
+        return b;
+      }
+    }
+    throw new IllegalArgumentException("Unexpected value '" + text + "'");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/EnumTest.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/EnumTest.java
new file mode 100644
index 00000000000..489fb70ed74
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/EnumTest.java
@@ -0,0 +1,443 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import org.openapitools.client.model.OuterEnum;
+import org.openapitools.client.model.OuterEnumDefaultValue;
+import org.openapitools.client.model.OuterEnumInteger;
+import org.openapitools.client.model.OuterEnumIntegerDefaultValue;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class EnumTest  {
+  
+  @JsonbTypeSerializer(EnumStringEnum.Serializer.class)
+  @JsonbTypeDeserializer(EnumStringEnum.Deserializer.class)
+  public enum EnumStringEnum {
+
+    UPPER(String.valueOf("UPPER")), LOWER(String.valueOf("lower")), EMPTY(String.valueOf(""));
+
+
+    String value;
+
+    EnumStringEnum (String v) {
+        value = v;
+    }
+
+    public String value() {
+        return value;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(value);
+    }
+
+    public static final class Deserializer implements JsonbDeserializer<EnumStringEnum> {
+        @Override
+        public EnumStringEnum deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+            for (EnumStringEnum b : EnumStringEnum.values()) {
+                if (String.valueOf(b.value).equals(parser.getString())) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + parser.getString() + "'");
+        }
+    }
+
+    public static final class Serializer implements JsonbSerializer<EnumStringEnum> {
+        @Override
+        public void serialize(EnumStringEnum obj, JsonGenerator generator, SerializationContext ctx) {
+            generator.write(obj.value);
+        }
+    }
+  }
+
+  @JsonbProperty("enum_string")
+  private EnumStringEnum enumString;
+
+  @JsonbTypeSerializer(EnumStringRequiredEnum.Serializer.class)
+  @JsonbTypeDeserializer(EnumStringRequiredEnum.Deserializer.class)
+  public enum EnumStringRequiredEnum {
+
+    UPPER(String.valueOf("UPPER")), LOWER(String.valueOf("lower")), EMPTY(String.valueOf(""));
+
+
+    String value;
+
+    EnumStringRequiredEnum (String v) {
+        value = v;
+    }
+
+    public String value() {
+        return value;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(value);
+    }
+
+    public static final class Deserializer implements JsonbDeserializer<EnumStringRequiredEnum> {
+        @Override
+        public EnumStringRequiredEnum deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+            for (EnumStringRequiredEnum b : EnumStringRequiredEnum.values()) {
+                if (String.valueOf(b.value).equals(parser.getString())) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + parser.getString() + "'");
+        }
+    }
+
+    public static final class Serializer implements JsonbSerializer<EnumStringRequiredEnum> {
+        @Override
+        public void serialize(EnumStringRequiredEnum obj, JsonGenerator generator, SerializationContext ctx) {
+            generator.write(obj.value);
+        }
+    }
+  }
+
+  @JsonbProperty("enum_string_required")
+  private EnumStringRequiredEnum enumStringRequired;
+
+  @JsonbTypeSerializer(EnumIntegerEnum.Serializer.class)
+  @JsonbTypeDeserializer(EnumIntegerEnum.Deserializer.class)
+  public enum EnumIntegerEnum {
+
+    NUMBER_1(Integer.valueOf(1)), NUMBER_MINUS_1(Integer.valueOf(-1));
+
+
+    Integer value;
+
+    EnumIntegerEnum (Integer v) {
+        value = v;
+    }
+
+    public Integer value() {
+        return value;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(value);
+    }
+
+    public static final class Deserializer implements JsonbDeserializer<EnumIntegerEnum> {
+        @Override
+        public EnumIntegerEnum deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+            for (EnumIntegerEnum b : EnumIntegerEnum.values()) {
+                if (String.valueOf(b.value).equals(parser.getString())) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + parser.getString() + "'");
+        }
+    }
+
+    public static final class Serializer implements JsonbSerializer<EnumIntegerEnum> {
+        @Override
+        public void serialize(EnumIntegerEnum obj, JsonGenerator generator, SerializationContext ctx) {
+            generator.write(obj.value);
+        }
+    }
+  }
+
+  @JsonbProperty("enum_integer")
+  private EnumIntegerEnum enumInteger;
+
+  @JsonbTypeSerializer(EnumNumberEnum.Serializer.class)
+  @JsonbTypeDeserializer(EnumNumberEnum.Deserializer.class)
+  public enum EnumNumberEnum {
+
+    NUMBER_1_DOT_1(Double.valueOf(1.1)), NUMBER_MINUS_1_DOT_2(Double.valueOf(-1.2));
+
+
+    Double value;
+
+    EnumNumberEnum (Double v) {
+        value = v;
+    }
+
+    public Double value() {
+        return value;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(value);
+    }
+
+    public static final class Deserializer implements JsonbDeserializer<EnumNumberEnum> {
+        @Override
+        public EnumNumberEnum deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+            for (EnumNumberEnum b : EnumNumberEnum.values()) {
+                if (String.valueOf(b.value).equals(parser.getString())) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + parser.getString() + "'");
+        }
+    }
+
+    public static final class Serializer implements JsonbSerializer<EnumNumberEnum> {
+        @Override
+        public void serialize(EnumNumberEnum obj, JsonGenerator generator, SerializationContext ctx) {
+            generator.write(obj.value);
+        }
+    }
+  }
+
+  @JsonbProperty("enum_number")
+  private EnumNumberEnum enumNumber;
+
+  @JsonbProperty("outerEnum")
+  private OuterEnum outerEnum;
+
+  @JsonbProperty("outerEnumInteger")
+  private OuterEnumInteger outerEnumInteger;
+
+  @JsonbProperty("outerEnumDefaultValue")
+  private OuterEnumDefaultValue outerEnumDefaultValue = OuterEnumDefaultValue.PLACED;
+
+  @JsonbProperty("outerEnumIntegerDefaultValue")
+  private OuterEnumIntegerDefaultValue outerEnumIntegerDefaultValue = OuterEnumIntegerDefaultValue.NUMBER_0;
+
+  /**
+   * Get enumString
+   * @return enumString
+   **/
+  public EnumStringEnum getEnumString() {
+    return enumString;
+  }
+
+  /**
+   * Set enumString
+   */
+  public void setEnumString(EnumStringEnum enumString) {
+    this.enumString = enumString;
+  }
+
+  public EnumTest enumString(EnumStringEnum enumString) {
+    this.enumString = enumString;
+    return this;
+  }
+
+  /**
+   * Get enumStringRequired
+   * @return enumStringRequired
+   **/
+  public EnumStringRequiredEnum getEnumStringRequired() {
+    return enumStringRequired;
+  }
+
+  /**
+   * Set enumStringRequired
+   */
+  public void setEnumStringRequired(EnumStringRequiredEnum enumStringRequired) {
+    this.enumStringRequired = enumStringRequired;
+  }
+
+  public EnumTest enumStringRequired(EnumStringRequiredEnum enumStringRequired) {
+    this.enumStringRequired = enumStringRequired;
+    return this;
+  }
+
+  /**
+   * Get enumInteger
+   * @return enumInteger
+   **/
+  public EnumIntegerEnum getEnumInteger() {
+    return enumInteger;
+  }
+
+  /**
+   * Set enumInteger
+   */
+  public void setEnumInteger(EnumIntegerEnum enumInteger) {
+    this.enumInteger = enumInteger;
+  }
+
+  public EnumTest enumInteger(EnumIntegerEnum enumInteger) {
+    this.enumInteger = enumInteger;
+    return this;
+  }
+
+  /**
+   * Get enumNumber
+   * @return enumNumber
+   **/
+  public EnumNumberEnum getEnumNumber() {
+    return enumNumber;
+  }
+
+  /**
+   * Set enumNumber
+   */
+  public void setEnumNumber(EnumNumberEnum enumNumber) {
+    this.enumNumber = enumNumber;
+  }
+
+  public EnumTest enumNumber(EnumNumberEnum enumNumber) {
+    this.enumNumber = enumNumber;
+    return this;
+  }
+
+  /**
+   * Get outerEnum
+   * @return outerEnum
+   **/
+  public OuterEnum getOuterEnum() {
+    return outerEnum;
+  }
+
+  /**
+   * Set outerEnum
+   */
+  public void setOuterEnum(OuterEnum outerEnum) {
+    this.outerEnum = outerEnum;
+  }
+
+  public EnumTest outerEnum(OuterEnum outerEnum) {
+    this.outerEnum = outerEnum;
+    return this;
+  }
+
+  /**
+   * Get outerEnumInteger
+   * @return outerEnumInteger
+   **/
+  public OuterEnumInteger getOuterEnumInteger() {
+    return outerEnumInteger;
+  }
+
+  /**
+   * Set outerEnumInteger
+   */
+  public void setOuterEnumInteger(OuterEnumInteger outerEnumInteger) {
+    this.outerEnumInteger = outerEnumInteger;
+  }
+
+  public EnumTest outerEnumInteger(OuterEnumInteger outerEnumInteger) {
+    this.outerEnumInteger = outerEnumInteger;
+    return this;
+  }
+
+  /**
+   * Get outerEnumDefaultValue
+   * @return outerEnumDefaultValue
+   **/
+  public OuterEnumDefaultValue getOuterEnumDefaultValue() {
+    return outerEnumDefaultValue;
+  }
+
+  /**
+   * Set outerEnumDefaultValue
+   */
+  public void setOuterEnumDefaultValue(OuterEnumDefaultValue outerEnumDefaultValue) {
+    this.outerEnumDefaultValue = outerEnumDefaultValue;
+  }
+
+  public EnumTest outerEnumDefaultValue(OuterEnumDefaultValue outerEnumDefaultValue) {
+    this.outerEnumDefaultValue = outerEnumDefaultValue;
+    return this;
+  }
+
+  /**
+   * Get outerEnumIntegerDefaultValue
+   * @return outerEnumIntegerDefaultValue
+   **/
+  public OuterEnumIntegerDefaultValue getOuterEnumIntegerDefaultValue() {
+    return outerEnumIntegerDefaultValue;
+  }
+
+  /**
+   * Set outerEnumIntegerDefaultValue
+   */
+  public void setOuterEnumIntegerDefaultValue(OuterEnumIntegerDefaultValue outerEnumIntegerDefaultValue) {
+    this.outerEnumIntegerDefaultValue = outerEnumIntegerDefaultValue;
+  }
+
+  public EnumTest outerEnumIntegerDefaultValue(OuterEnumIntegerDefaultValue outerEnumIntegerDefaultValue) {
+    this.outerEnumIntegerDefaultValue = outerEnumIntegerDefaultValue;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    EnumTest enumTest = (EnumTest) o;
+    return Objects.equals(this.enumString, enumTest.enumString) &&
+        Objects.equals(this.enumStringRequired, enumTest.enumStringRequired) &&
+        Objects.equals(this.enumInteger, enumTest.enumInteger) &&
+        Objects.equals(this.enumNumber, enumTest.enumNumber) &&
+        Objects.equals(this.outerEnum, enumTest.outerEnum) &&
+        Objects.equals(this.outerEnumInteger, enumTest.outerEnumInteger) &&
+        Objects.equals(this.outerEnumDefaultValue, enumTest.outerEnumDefaultValue) &&
+        Objects.equals(this.outerEnumIntegerDefaultValue, enumTest.outerEnumIntegerDefaultValue);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(enumString, enumStringRequired, enumInteger, enumNumber, outerEnum, outerEnumInteger, outerEnumDefaultValue, outerEnumIntegerDefaultValue);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class EnumTest {\n");
+    
+    sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
+    sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
+    sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
+    sb.append("    enumNumber: ").append(toIndentedString(enumNumber)).append("\n");
+    sb.append("    outerEnum: ").append(toIndentedString(outerEnum)).append("\n");
+    sb.append("    outerEnumInteger: ").append(toIndentedString(outerEnumInteger)).append("\n");
+    sb.append("    outerEnumDefaultValue: ").append(toIndentedString(outerEnumDefaultValue)).append("\n");
+    sb.append("    outerEnumIntegerDefaultValue: ").append(toIndentedString(outerEnumIntegerDefaultValue)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/FakeBigDecimalMap200Response.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/FakeBigDecimalMap200Response.java
new file mode 100644
index 00000000000..43696c63f3c
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/FakeBigDecimalMap200Response.java
@@ -0,0 +1,132 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.math.BigDecimal;
+import java.util.HashMap;
+import java.util.Map;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class FakeBigDecimalMap200Response  {
+  
+  @JsonbProperty("someId")
+  private BigDecimal someId;
+
+  @JsonbProperty("someMap")
+  private Map<String, BigDecimal> someMap = null;
+
+  /**
+   * Get someId
+   * @return someId
+   **/
+  public BigDecimal getSomeId() {
+    return someId;
+  }
+
+  /**
+   * Set someId
+   */
+  public void setSomeId(BigDecimal someId) {
+    this.someId = someId;
+  }
+
+  public FakeBigDecimalMap200Response someId(BigDecimal someId) {
+    this.someId = someId;
+    return this;
+  }
+
+  /**
+   * Get someMap
+   * @return someMap
+   **/
+  public Map<String, BigDecimal> getSomeMap() {
+    return someMap;
+  }
+
+  /**
+   * Set someMap
+   */
+  public void setSomeMap(Map<String, BigDecimal> someMap) {
+    this.someMap = someMap;
+  }
+
+  public FakeBigDecimalMap200Response someMap(Map<String, BigDecimal> someMap) {
+    this.someMap = someMap;
+    return this;
+  }
+
+  public FakeBigDecimalMap200Response putSomeMapItem(String key, BigDecimal someMapItem) {
+    if (this.someMap == null) {
+      this.someMap = new HashMap<>();
+    }
+    this.someMap.put(key, someMapItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    FakeBigDecimalMap200Response fakeBigDecimalMap200Response = (FakeBigDecimalMap200Response) o;
+    return Objects.equals(this.someId, fakeBigDecimalMap200Response.someId) &&
+        Objects.equals(this.someMap, fakeBigDecimalMap200Response.someMap);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(someId, someMap);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class FakeBigDecimalMap200Response {\n");
+    
+    sb.append("    someId: ").append(toIndentedString(someId)).append("\n");
+    sb.append("    someMap: ").append(toIndentedString(someMap)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
new file mode 100644
index 00000000000..4ede19f0d15
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
@@ -0,0 +1,133 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.openapitools.client.model.ModelFile;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class FileSchemaTestClass  {
+  
+  @JsonbProperty("file")
+  private ModelFile _file;
+
+  @JsonbProperty("files")
+  private List<ModelFile> files = null;
+
+  /**
+   * Get _file
+   * @return _file
+   **/
+  public ModelFile getFile() {
+    return _file;
+  }
+
+  /**
+   * Set _file
+   */
+  public void setFile(ModelFile _file) {
+    this._file = _file;
+  }
+
+  public FileSchemaTestClass _file(ModelFile _file) {
+    this._file = _file;
+    return this;
+  }
+
+  /**
+   * Get files
+   * @return files
+   **/
+  public List<ModelFile> getFiles() {
+    return files;
+  }
+
+  /**
+   * Set files
+   */
+  public void setFiles(List<ModelFile> files) {
+    this.files = files;
+  }
+
+  public FileSchemaTestClass files(List<ModelFile> files) {
+    this.files = files;
+    return this;
+  }
+
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
+    if (this.files == null) {
+      this.files = new ArrayList<>();
+    }
+    this.files.add(filesItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
+        Objects.equals(this.files, fileSchemaTestClass.files);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_file, files);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class FileSchemaTestClass {\n");
+    
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
+    sb.append("    files: ").append(toIndentedString(files)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Foo.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Foo.java
new file mode 100644
index 00000000000..53bccc72e8d
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Foo.java
@@ -0,0 +1,96 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class Foo  {
+  
+  @JsonbProperty("bar")
+  private String bar = "bar";
+
+  /**
+   * Get bar
+   * @return bar
+   **/
+  public String getBar() {
+    return bar;
+  }
+
+  /**
+   * Set bar
+   */
+  public void setBar(String bar) {
+    this.bar = bar;
+  }
+
+  public Foo bar(String bar) {
+    this.bar = bar;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Foo foo = (Foo) o;
+    return Objects.equals(this.bar, foo.bar);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(bar);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Foo {\n");
+    
+    sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/FooGetDefaultResponse.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/FooGetDefaultResponse.java
new file mode 100644
index 00000000000..3c440a0baa4
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/FooGetDefaultResponse.java
@@ -0,0 +1,97 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import org.openapitools.client.model.Foo;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class FooGetDefaultResponse  {
+  
+  @JsonbProperty("string")
+  private Foo string;
+
+  /**
+   * Get string
+   * @return string
+   **/
+  public Foo getString() {
+    return string;
+  }
+
+  /**
+   * Set string
+   */
+  public void setString(Foo string) {
+    this.string = string;
+  }
+
+  public FooGetDefaultResponse string(Foo string) {
+    this.string = string;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    FooGetDefaultResponse fooGetDefaultResponse = (FooGetDefaultResponse) o;
+    return Objects.equals(this.string, fooGetDefaultResponse.string);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(string);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class FooGetDefaultResponse {\n");
+    
+    sb.append("    string: ").append(toIndentedString(string)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/FormatTest.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/FormatTest.java
new file mode 100644
index 00000000000..ae0b8b73543
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/FormatTest.java
@@ -0,0 +1,491 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.io.File;
+import java.math.BigDecimal;
+import java.util.Date;
+import java.util.UUID;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class FormatTest  {
+  
+  @JsonbProperty("integer")
+  private Integer integer;
+
+  @JsonbProperty("int32")
+  private Integer int32;
+
+  @JsonbProperty("int64")
+  private Long int64;
+
+  @JsonbProperty("number")
+  private BigDecimal number;
+
+  @JsonbProperty("float")
+  private Float _float;
+
+  @JsonbProperty("double")
+  private Double _double;
+
+  @JsonbProperty("decimal")
+  private BigDecimal decimal;
+
+  @JsonbProperty("string")
+  private String string;
+
+  @JsonbProperty("byte")
+  private byte[] _byte;
+
+  @JsonbProperty("binary")
+  private File binary;
+
+  @JsonbProperty("date")
+  private Date date;
+
+  @JsonbProperty("dateTime")
+  private Date dateTime;
+
+  @JsonbProperty("uuid")
+  private UUID uuid;
+
+  @JsonbProperty("password")
+  private String password;
+
+ /**
+  * A string that is a 10 digit number. Can have leading zeros.
+  */
+  @JsonbProperty("pattern_with_digits")
+  private String patternWithDigits;
+
+ /**
+  * A string starting with 'image_' (case insensitive) and one to three digits following i.e. Image_01.
+  */
+  @JsonbProperty("pattern_with_digits_and_delimiter")
+  private String patternWithDigitsAndDelimiter;
+
+  /**
+   * Get integer
+   * minimum: 10
+   * maximum: 100
+   * @return integer
+   **/
+  public Integer getInteger() {
+    return integer;
+  }
+
+  /**
+   * Set integer
+   */
+  public void setInteger(Integer integer) {
+    this.integer = integer;
+  }
+
+  public FormatTest integer(Integer integer) {
+    this.integer = integer;
+    return this;
+  }
+
+  /**
+   * Get int32
+   * minimum: 20
+   * maximum: 200
+   * @return int32
+   **/
+  public Integer getInt32() {
+    return int32;
+  }
+
+  /**
+   * Set int32
+   */
+  public void setInt32(Integer int32) {
+    this.int32 = int32;
+  }
+
+  public FormatTest int32(Integer int32) {
+    this.int32 = int32;
+    return this;
+  }
+
+  /**
+   * Get int64
+   * @return int64
+   **/
+  public Long getInt64() {
+    return int64;
+  }
+
+  /**
+   * Set int64
+   */
+  public void setInt64(Long int64) {
+    this.int64 = int64;
+  }
+
+  public FormatTest int64(Long int64) {
+    this.int64 = int64;
+    return this;
+  }
+
+  /**
+   * Get number
+   * minimum: 32.1
+   * maximum: 543.2
+   * @return number
+   **/
+  public BigDecimal getNumber() {
+    return number;
+  }
+
+  /**
+   * Set number
+   */
+  public void setNumber(BigDecimal number) {
+    this.number = number;
+  }
+
+  public FormatTest number(BigDecimal number) {
+    this.number = number;
+    return this;
+  }
+
+  /**
+   * Get _float
+   * minimum: 54.3
+   * maximum: 987.6
+   * @return _float
+   **/
+  public Float getFloat() {
+    return _float;
+  }
+
+  /**
+   * Set _float
+   */
+  public void setFloat(Float _float) {
+    this._float = _float;
+  }
+
+  public FormatTest _float(Float _float) {
+    this._float = _float;
+    return this;
+  }
+
+  /**
+   * Get _double
+   * minimum: 67.8
+   * maximum: 123.4
+   * @return _double
+   **/
+  public Double getDouble() {
+    return _double;
+  }
+
+  /**
+   * Set _double
+   */
+  public void setDouble(Double _double) {
+    this._double = _double;
+  }
+
+  public FormatTest _double(Double _double) {
+    this._double = _double;
+    return this;
+  }
+
+  /**
+   * Get decimal
+   * @return decimal
+   **/
+  public BigDecimal getDecimal() {
+    return decimal;
+  }
+
+  /**
+   * Set decimal
+   */
+  public void setDecimal(BigDecimal decimal) {
+    this.decimal = decimal;
+  }
+
+  public FormatTest decimal(BigDecimal decimal) {
+    this.decimal = decimal;
+    return this;
+  }
+
+  /**
+   * Get string
+   * @return string
+   **/
+  public String getString() {
+    return string;
+  }
+
+  /**
+   * Set string
+   */
+  public void setString(String string) {
+    this.string = string;
+  }
+
+  public FormatTest string(String string) {
+    this.string = string;
+    return this;
+  }
+
+  /**
+   * Get _byte
+   * @return _byte
+   **/
+  public byte[] getByte() {
+    return _byte;
+  }
+
+  /**
+   * Set _byte
+   */
+  public void setByte(byte[] _byte) {
+    this._byte = _byte;
+  }
+
+  public FormatTest _byte(byte[] _byte) {
+    this._byte = _byte;
+    return this;
+  }
+
+  /**
+   * Get binary
+   * @return binary
+   **/
+  public File getBinary() {
+    return binary;
+  }
+
+  /**
+   * Set binary
+   */
+  public void setBinary(File binary) {
+    this.binary = binary;
+  }
+
+  public FormatTest binary(File binary) {
+    this.binary = binary;
+    return this;
+  }
+
+  /**
+   * Get date
+   * @return date
+   **/
+  public Date getDate() {
+    return date;
+  }
+
+  /**
+   * Set date
+   */
+  public void setDate(Date date) {
+    this.date = date;
+  }
+
+  public FormatTest date(Date date) {
+    this.date = date;
+    return this;
+  }
+
+  /**
+   * Get dateTime
+   * @return dateTime
+   **/
+  public Date getDateTime() {
+    return dateTime;
+  }
+
+  /**
+   * Set dateTime
+   */
+  public void setDateTime(Date dateTime) {
+    this.dateTime = dateTime;
+  }
+
+  public FormatTest dateTime(Date dateTime) {
+    this.dateTime = dateTime;
+    return this;
+  }
+
+  /**
+   * Get uuid
+   * @return uuid
+   **/
+  public UUID getUuid() {
+    return uuid;
+  }
+
+  /**
+   * Set uuid
+   */
+  public void setUuid(UUID uuid) {
+    this.uuid = uuid;
+  }
+
+  public FormatTest uuid(UUID uuid) {
+    this.uuid = uuid;
+    return this;
+  }
+
+  /**
+   * Get password
+   * @return password
+   **/
+  public String getPassword() {
+    return password;
+  }
+
+  /**
+   * Set password
+   */
+  public void setPassword(String password) {
+    this.password = password;
+  }
+
+  public FormatTest password(String password) {
+    this.password = password;
+    return this;
+  }
+
+  /**
+   * A string that is a 10 digit number. Can have leading zeros.
+   * @return patternWithDigits
+   **/
+  public String getPatternWithDigits() {
+    return patternWithDigits;
+  }
+
+  /**
+   * Set patternWithDigits
+   */
+  public void setPatternWithDigits(String patternWithDigits) {
+    this.patternWithDigits = patternWithDigits;
+  }
+
+  public FormatTest patternWithDigits(String patternWithDigits) {
+    this.patternWithDigits = patternWithDigits;
+    return this;
+  }
+
+  /**
+   * A string starting with &#39;image_&#39; (case insensitive) and one to three digits following i.e. Image_01.
+   * @return patternWithDigitsAndDelimiter
+   **/
+  public String getPatternWithDigitsAndDelimiter() {
+    return patternWithDigitsAndDelimiter;
+  }
+
+  /**
+   * Set patternWithDigitsAndDelimiter
+   */
+  public void setPatternWithDigitsAndDelimiter(String patternWithDigitsAndDelimiter) {
+    this.patternWithDigitsAndDelimiter = patternWithDigitsAndDelimiter;
+  }
+
+  public FormatTest patternWithDigitsAndDelimiter(String patternWithDigitsAndDelimiter) {
+    this.patternWithDigitsAndDelimiter = patternWithDigitsAndDelimiter;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    FormatTest formatTest = (FormatTest) o;
+    return Objects.equals(this.integer, formatTest.integer) &&
+        Objects.equals(this.int32, formatTest.int32) &&
+        Objects.equals(this.int64, formatTest.int64) &&
+        Objects.equals(this.number, formatTest.number) &&
+        Objects.equals(this._float, formatTest._float) &&
+        Objects.equals(this._double, formatTest._double) &&
+        Objects.equals(this.decimal, formatTest.decimal) &&
+        Objects.equals(this.string, formatTest.string) &&
+        Arrays.equals(this._byte, formatTest._byte) &&
+        Objects.equals(this.binary, formatTest.binary) &&
+        Objects.equals(this.date, formatTest.date) &&
+        Objects.equals(this.dateTime, formatTest.dateTime) &&
+        Objects.equals(this.uuid, formatTest.uuid) &&
+        Objects.equals(this.password, formatTest.password) &&
+        Objects.equals(this.patternWithDigits, formatTest.patternWithDigits) &&
+        Objects.equals(this.patternWithDigitsAndDelimiter, formatTest.patternWithDigitsAndDelimiter);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(integer, int32, int64, number, _float, _double, decimal, string, Arrays.hashCode(_byte), binary, date, dateTime, uuid, password, patternWithDigits, patternWithDigitsAndDelimiter);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class FormatTest {\n");
+    
+    sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
+    sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
+    sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
+    sb.append("    number: ").append(toIndentedString(number)).append("\n");
+    sb.append("    _float: ").append(toIndentedString(_float)).append("\n");
+    sb.append("    _double: ").append(toIndentedString(_double)).append("\n");
+    sb.append("    decimal: ").append(toIndentedString(decimal)).append("\n");
+    sb.append("    string: ").append(toIndentedString(string)).append("\n");
+    sb.append("    _byte: ").append(toIndentedString(_byte)).append("\n");
+    sb.append("    binary: ").append(toIndentedString(binary)).append("\n");
+    sb.append("    date: ").append(toIndentedString(date)).append("\n");
+    sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
+    sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
+    sb.append("    password: ").append("*").append("\n");
+    sb.append("    patternWithDigits: ").append(toIndentedString(patternWithDigits)).append("\n");
+    sb.append("    patternWithDigitsAndDelimiter: ").append(toIndentedString(patternWithDigitsAndDelimiter)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/HasOnlyReadOnly.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/HasOnlyReadOnly.java
new file mode 100644
index 00000000000..d57075a1917
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/HasOnlyReadOnly.java
@@ -0,0 +1,111 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class HasOnlyReadOnly  {
+  
+  @JsonbProperty("bar")
+  private String bar;
+
+  @JsonbProperty("foo")
+  private String foo;
+
+  public HasOnlyReadOnly() {
+  }
+
+ @JsonbCreator
+  public HasOnlyReadOnly(
+    @JsonbProperty(value = "bar", nillable = true) String bar, 
+    @JsonbProperty(value = "foo", nillable = true) String foo
+  ) {
+    this.bar = bar;
+    this.foo = foo;
+  }
+  
+  /**
+   * Get bar
+   * @return bar
+   **/
+  public String getBar() {
+    return bar;
+  }
+
+
+  /**
+   * Get foo
+   * @return foo
+   **/
+  public String getFoo() {
+    return foo;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    HasOnlyReadOnly hasOnlyReadOnly = (HasOnlyReadOnly) o;
+    return Objects.equals(this.bar, hasOnlyReadOnly.bar) &&
+        Objects.equals(this.foo, hasOnlyReadOnly.foo);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(bar, foo);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class HasOnlyReadOnly {\n");
+    
+    sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
+    sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/HealthCheckResult.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/HealthCheckResult.java
new file mode 100644
index 00000000000..e54c3f3d1e6
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/HealthCheckResult.java
@@ -0,0 +1,99 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+/**
+  * Just a string to inform instance is up and running. Make it nullable in hope to get it as pointer in generated model.
+  */
+
+public class HealthCheckResult  {
+  
+  @JsonbProperty("NullableMessage")
+  private String nullableMessage;
+
+  /**
+   * Get nullableMessage
+   * @return nullableMessage
+   **/
+  public String getNullableMessage() {
+    return nullableMessage;
+  }
+
+  /**
+   * Set nullableMessage
+   */
+  public void setNullableMessage(String nullableMessage) {
+    this.nullableMessage = nullableMessage;
+  }
+
+  public HealthCheckResult nullableMessage(String nullableMessage) {
+    this.nullableMessage = nullableMessage;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    HealthCheckResult healthCheckResult = (HealthCheckResult) o;
+    return Objects.equals(this.nullableMessage, healthCheckResult.nullableMessage);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(nullableMessage);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class HealthCheckResult {\n");
+    
+    sb.append("    nullableMessage: ").append(toIndentedString(nullableMessage)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/MapTest.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/MapTest.java
new file mode 100644
index 00000000000..e6977a0567d
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/MapTest.java
@@ -0,0 +1,247 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Map;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class MapTest  {
+  
+  @JsonbProperty("map_map_of_string")
+  private Map<String, Map<String, String>> mapMapOfString = null;
+
+  @JsonbTypeSerializer(InnerEnum.Serializer.class)
+  @JsonbTypeDeserializer(InnerEnum.Deserializer.class)
+  public enum InnerEnum {
+
+    UPPER(String.valueOf("UPPER")), LOWER(String.valueOf("lower"));
+
+
+    String value;
+
+    InnerEnum (String v) {
+        value = v;
+    }
+
+    public String value() {
+        return value;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(value);
+    }
+
+    public static final class Deserializer implements JsonbDeserializer<InnerEnum> {
+        @Override
+        public InnerEnum deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+            for (InnerEnum b : InnerEnum.values()) {
+                if (String.valueOf(b.value).equals(parser.getString())) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + parser.getString() + "'");
+        }
+    }
+
+    public static final class Serializer implements JsonbSerializer<InnerEnum> {
+        @Override
+        public void serialize(InnerEnum obj, JsonGenerator generator, SerializationContext ctx) {
+            generator.write(obj.value);
+        }
+    }
+  }
+
+  @JsonbProperty("map_of_enum_string")
+  private Map<String, InnerEnum> mapOfEnumString = null;
+
+  @JsonbProperty("direct_map")
+  private Map<String, Boolean> directMap = null;
+
+  @JsonbProperty("indirect_map")
+  private Map<String, Boolean> indirectMap = null;
+
+  /**
+   * Get mapMapOfString
+   * @return mapMapOfString
+   **/
+  public Map<String, Map<String, String>> getMapMapOfString() {
+    return mapMapOfString;
+  }
+
+  /**
+   * Set mapMapOfString
+   */
+  public void setMapMapOfString(Map<String, Map<String, String>> mapMapOfString) {
+    this.mapMapOfString = mapMapOfString;
+  }
+
+  public MapTest mapMapOfString(Map<String, Map<String, String>> mapMapOfString) {
+    this.mapMapOfString = mapMapOfString;
+    return this;
+  }
+
+  public MapTest putMapMapOfStringItem(String key, Map<String, String> mapMapOfStringItem) {
+    if (this.mapMapOfString == null) {
+      this.mapMapOfString = new HashMap<>();
+    }
+    this.mapMapOfString.put(key, mapMapOfStringItem);
+    return this;
+  }
+
+  /**
+   * Get mapOfEnumString
+   * @return mapOfEnumString
+   **/
+  public Map<String, InnerEnum> getMapOfEnumString() {
+    return mapOfEnumString;
+  }
+
+  /**
+   * Set mapOfEnumString
+   */
+  public void setMapOfEnumString(Map<String, InnerEnum> mapOfEnumString) {
+    this.mapOfEnumString = mapOfEnumString;
+  }
+
+  public MapTest mapOfEnumString(Map<String, InnerEnum> mapOfEnumString) {
+    this.mapOfEnumString = mapOfEnumString;
+    return this;
+  }
+
+  public MapTest putMapOfEnumStringItem(String key, InnerEnum mapOfEnumStringItem) {
+    if (this.mapOfEnumString == null) {
+      this.mapOfEnumString = new HashMap<>();
+    }
+    this.mapOfEnumString.put(key, mapOfEnumStringItem);
+    return this;
+  }
+
+  /**
+   * Get directMap
+   * @return directMap
+   **/
+  public Map<String, Boolean> getDirectMap() {
+    return directMap;
+  }
+
+  /**
+   * Set directMap
+   */
+  public void setDirectMap(Map<String, Boolean> directMap) {
+    this.directMap = directMap;
+  }
+
+  public MapTest directMap(Map<String, Boolean> directMap) {
+    this.directMap = directMap;
+    return this;
+  }
+
+  public MapTest putDirectMapItem(String key, Boolean directMapItem) {
+    if (this.directMap == null) {
+      this.directMap = new HashMap<>();
+    }
+    this.directMap.put(key, directMapItem);
+    return this;
+  }
+
+  /**
+   * Get indirectMap
+   * @return indirectMap
+   **/
+  public Map<String, Boolean> getIndirectMap() {
+    return indirectMap;
+  }
+
+  /**
+   * Set indirectMap
+   */
+  public void setIndirectMap(Map<String, Boolean> indirectMap) {
+    this.indirectMap = indirectMap;
+  }
+
+  public MapTest indirectMap(Map<String, Boolean> indirectMap) {
+    this.indirectMap = indirectMap;
+    return this;
+  }
+
+  public MapTest putIndirectMapItem(String key, Boolean indirectMapItem) {
+    if (this.indirectMap == null) {
+      this.indirectMap = new HashMap<>();
+    }
+    this.indirectMap.put(key, indirectMapItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    MapTest mapTest = (MapTest) o;
+    return Objects.equals(this.mapMapOfString, mapTest.mapMapOfString) &&
+        Objects.equals(this.mapOfEnumString, mapTest.mapOfEnumString) &&
+        Objects.equals(this.directMap, mapTest.directMap) &&
+        Objects.equals(this.indirectMap, mapTest.indirectMap);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(mapMapOfString, mapOfEnumString, directMap, indirectMap);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class MapTest {\n");
+    
+    sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
+    sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
+    sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
+    sb.append("    indirectMap: ").append(toIndentedString(indirectMap)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
new file mode 100644
index 00000000000..d9599a2b4d2
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -0,0 +1,159 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.UUID;
+import org.openapitools.client.model.Animal;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class MixedPropertiesAndAdditionalPropertiesClass  {
+  
+  @JsonbProperty("uuid")
+  private UUID uuid;
+
+  @JsonbProperty("dateTime")
+  private Date dateTime;
+
+  @JsonbProperty("map")
+  private Map<String, Animal> map = null;
+
+  /**
+   * Get uuid
+   * @return uuid
+   **/
+  public UUID getUuid() {
+    return uuid;
+  }
+
+  /**
+   * Set uuid
+   */
+  public void setUuid(UUID uuid) {
+    this.uuid = uuid;
+  }
+
+  public MixedPropertiesAndAdditionalPropertiesClass uuid(UUID uuid) {
+    this.uuid = uuid;
+    return this;
+  }
+
+  /**
+   * Get dateTime
+   * @return dateTime
+   **/
+  public Date getDateTime() {
+    return dateTime;
+  }
+
+  /**
+   * Set dateTime
+   */
+  public void setDateTime(Date dateTime) {
+    this.dateTime = dateTime;
+  }
+
+  public MixedPropertiesAndAdditionalPropertiesClass dateTime(Date dateTime) {
+    this.dateTime = dateTime;
+    return this;
+  }
+
+  /**
+   * Get map
+   * @return map
+   **/
+  public Map<String, Animal> getMap() {
+    return map;
+  }
+
+  /**
+   * Set map
+   */
+  public void setMap(Map<String, Animal> map) {
+    this.map = map;
+  }
+
+  public MixedPropertiesAndAdditionalPropertiesClass map(Map<String, Animal> map) {
+    this.map = map;
+    return this;
+  }
+
+  public MixedPropertiesAndAdditionalPropertiesClass putMapItem(String key, Animal mapItem) {
+    if (this.map == null) {
+      this.map = new HashMap<>();
+    }
+    this.map.put(key, mapItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    MixedPropertiesAndAdditionalPropertiesClass mixedPropertiesAndAdditionalPropertiesClass = (MixedPropertiesAndAdditionalPropertiesClass) o;
+    return Objects.equals(this.uuid, mixedPropertiesAndAdditionalPropertiesClass.uuid) &&
+        Objects.equals(this.dateTime, mixedPropertiesAndAdditionalPropertiesClass.dateTime) &&
+        Objects.equals(this.map, mixedPropertiesAndAdditionalPropertiesClass.map);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(uuid, dateTime, map);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
+    
+    sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
+    sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
+    sb.append("    map: ").append(toIndentedString(map)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Model200Response.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Model200Response.java
new file mode 100644
index 00000000000..1e6501396a5
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Model200Response.java
@@ -0,0 +1,124 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+/**
+  * Model for testing model name starting with number
+  */
+
+public class Model200Response  {
+  
+  @JsonbProperty("name")
+  private Integer name;
+
+  @JsonbProperty("class")
+  private String propertyClass;
+
+  /**
+   * Get name
+   * @return name
+   **/
+  public Integer getName() {
+    return name;
+  }
+
+  /**
+   * Set name
+   */
+  public void setName(Integer name) {
+    this.name = name;
+  }
+
+  public Model200Response name(Integer name) {
+    this.name = name;
+    return this;
+  }
+
+  /**
+   * Get propertyClass
+   * @return propertyClass
+   **/
+  public String getPropertyClass() {
+    return propertyClass;
+  }
+
+  /**
+   * Set propertyClass
+   */
+  public void setPropertyClass(String propertyClass) {
+    this.propertyClass = propertyClass;
+  }
+
+  public Model200Response propertyClass(String propertyClass) {
+    this.propertyClass = propertyClass;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Model200Response _200response = (Model200Response) o;
+    return Objects.equals(this.name, _200response.name) &&
+        Objects.equals(this.propertyClass, _200response.propertyClass);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(name, propertyClass);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Model200Response {\n");
+    
+    sb.append("    name: ").append(toIndentedString(name)).append("\n");
+    sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ModelApiResponse.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ModelApiResponse.java
index 6926a2e2270..78c6036f6b6 100644
--- a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ModelApiResponse.java
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ModelApiResponse.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -24,10 +24,8 @@ import javax.json.bind.serializer.SerializationContext;
 import javax.json.stream.JsonGenerator;
 import javax.json.stream.JsonParser;
 import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
 
-/**
-  * Describes the result of uploading an image resource
-  */
 
 public class ModelApiResponse  {
   
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ModelFile.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ModelFile.java
new file mode 100644
index 00000000000..81d92e29b7a
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ModelFile.java
@@ -0,0 +1,102 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+/**
+  * Must be named `File` for test.
+  */
+
+public class ModelFile  {
+  
+ /**
+  * Test capitalization
+  */
+  @JsonbProperty("sourceURI")
+  private String sourceURI;
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+   **/
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  /**
+   * Set sourceURI
+   */
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ModelList.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ModelList.java
new file mode 100644
index 00000000000..1a73f5d3b87
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ModelList.java
@@ -0,0 +1,96 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class ModelList  {
+  
+  @JsonbProperty("123-list")
+  private String _123list;
+
+  /**
+   * Get _123list
+   * @return _123list
+   **/
+  public String get123list() {
+    return _123list;
+  }
+
+  /**
+   * Set _123list
+   */
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ModelReturn.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ModelReturn.java
new file mode 100644
index 00000000000..cd0fbdb8b72
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ModelReturn.java
@@ -0,0 +1,99 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+/**
+  * Model for testing reserved words
+  */
+
+public class ModelReturn  {
+  
+  @JsonbProperty("return")
+  private Integer _return;
+
+  /**
+   * Get _return
+   * @return _return
+   **/
+  public Integer getReturn() {
+    return _return;
+  }
+
+  /**
+   * Set _return
+   */
+  public void setReturn(Integer _return) {
+    this._return = _return;
+  }
+
+  public ModelReturn _return(Integer _return) {
+    this._return = _return;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelReturn _return = (ModelReturn) o;
+    return Objects.equals(this._return, _return._return);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_return);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelReturn {\n");
+    
+    sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Name.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Name.java
new file mode 100644
index 00000000000..72824cd1d4c
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Name.java
@@ -0,0 +1,164 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+/**
+  * Model for testing model name same as property name
+  */
+
+public class Name  {
+  
+  @JsonbProperty("name")
+  private Integer name;
+
+  @JsonbProperty("snake_case")
+  private Integer snakeCase;
+
+  @JsonbProperty("property")
+  private String property;
+
+  @JsonbProperty("123Number")
+  private Integer _123number;
+
+  public Name() {
+  }
+
+ @JsonbCreator
+  public Name(
+    @JsonbProperty(value = "snake_case", nillable = true) Integer snakeCase, 
+    @JsonbProperty(value = "123Number", nillable = true) Integer _123number
+  ) {
+    this.snakeCase = snakeCase;
+    this._123number = _123number;
+  }
+  
+  /**
+   * Get name
+   * @return name
+   **/
+  public Integer getName() {
+    return name;
+  }
+
+  /**
+   * Set name
+   */
+  public void setName(Integer name) {
+    this.name = name;
+  }
+
+  public Name name(Integer name) {
+    this.name = name;
+    return this;
+  }
+
+  /**
+   * Get snakeCase
+   * @return snakeCase
+   **/
+  public Integer getSnakeCase() {
+    return snakeCase;
+  }
+
+
+  /**
+   * Get property
+   * @return property
+   **/
+  public String getProperty() {
+    return property;
+  }
+
+  /**
+   * Set property
+   */
+  public void setProperty(String property) {
+    this.property = property;
+  }
+
+  public Name property(String property) {
+    this.property = property;
+    return this;
+  }
+
+  /**
+   * Get _123number
+   * @return _123number
+   **/
+  public Integer get123number() {
+    return _123number;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Name name = (Name) o;
+    return Objects.equals(this.name, name.name) &&
+        Objects.equals(this.snakeCase, name.snakeCase) &&
+        Objects.equals(this.property, name.property) &&
+        Objects.equals(this._123number, name._123number);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(name, snakeCase, property, _123number);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Name {\n");
+    
+    sb.append("    name: ").append(toIndentedString(name)).append("\n");
+    sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
+    sb.append("    property: ").append(toIndentedString(property)).append("\n");
+    sb.append("    _123number: ").append(toIndentedString(_123number)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/NullableClass.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/NullableClass.java
new file mode 100644
index 00000000000..57edf7e20a4
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/NullableClass.java
@@ -0,0 +1,427 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class NullableClass extends HashMap<String, Object> {
+  
+  @JsonbProperty("integer_prop")
+  private Integer integerProp;
+
+  @JsonbProperty("number_prop")
+  private BigDecimal numberProp;
+
+  @JsonbProperty("boolean_prop")
+  private Boolean booleanProp;
+
+  @JsonbProperty("string_prop")
+  private String stringProp;
+
+  @JsonbProperty("date_prop")
+  private Date dateProp;
+
+  @JsonbProperty("datetime_prop")
+  private Date datetimeProp;
+
+  @JsonbProperty("array_nullable_prop")
+  private List<Object> arrayNullableProp = null;
+
+  @JsonbProperty("array_and_items_nullable_prop")
+  private List<Object> arrayAndItemsNullableProp = null;
+
+  @JsonbProperty("array_items_nullable")
+  private List<Object> arrayItemsNullable = null;
+
+  @JsonbProperty("object_nullable_prop")
+  private Map<String, Object> objectNullableProp = null;
+
+  @JsonbProperty("object_and_items_nullable_prop")
+  private Map<String, Object> objectAndItemsNullableProp = null;
+
+  @JsonbProperty("object_items_nullable")
+  private Map<String, Object> objectItemsNullable = null;
+
+  /**
+   * Get integerProp
+   * @return integerProp
+   **/
+  public Integer getIntegerProp() {
+    return integerProp;
+  }
+
+  /**
+   * Set integerProp
+   */
+  public void setIntegerProp(Integer integerProp) {
+    this.integerProp = integerProp;
+  }
+
+  public NullableClass integerProp(Integer integerProp) {
+    this.integerProp = integerProp;
+    return this;
+  }
+
+  /**
+   * Get numberProp
+   * @return numberProp
+   **/
+  public BigDecimal getNumberProp() {
+    return numberProp;
+  }
+
+  /**
+   * Set numberProp
+   */
+  public void setNumberProp(BigDecimal numberProp) {
+    this.numberProp = numberProp;
+  }
+
+  public NullableClass numberProp(BigDecimal numberProp) {
+    this.numberProp = numberProp;
+    return this;
+  }
+
+  /**
+   * Get booleanProp
+   * @return booleanProp
+   **/
+  public Boolean getBooleanProp() {
+    return booleanProp;
+  }
+
+  /**
+   * Set booleanProp
+   */
+  public void setBooleanProp(Boolean booleanProp) {
+    this.booleanProp = booleanProp;
+  }
+
+  public NullableClass booleanProp(Boolean booleanProp) {
+    this.booleanProp = booleanProp;
+    return this;
+  }
+
+  /**
+   * Get stringProp
+   * @return stringProp
+   **/
+  public String getStringProp() {
+    return stringProp;
+  }
+
+  /**
+   * Set stringProp
+   */
+  public void setStringProp(String stringProp) {
+    this.stringProp = stringProp;
+  }
+
+  public NullableClass stringProp(String stringProp) {
+    this.stringProp = stringProp;
+    return this;
+  }
+
+  /**
+   * Get dateProp
+   * @return dateProp
+   **/
+  public Date getDateProp() {
+    return dateProp;
+  }
+
+  /**
+   * Set dateProp
+   */
+  public void setDateProp(Date dateProp) {
+    this.dateProp = dateProp;
+  }
+
+  public NullableClass dateProp(Date dateProp) {
+    this.dateProp = dateProp;
+    return this;
+  }
+
+  /**
+   * Get datetimeProp
+   * @return datetimeProp
+   **/
+  public Date getDatetimeProp() {
+    return datetimeProp;
+  }
+
+  /**
+   * Set datetimeProp
+   */
+  public void setDatetimeProp(Date datetimeProp) {
+    this.datetimeProp = datetimeProp;
+  }
+
+  public NullableClass datetimeProp(Date datetimeProp) {
+    this.datetimeProp = datetimeProp;
+    return this;
+  }
+
+  /**
+   * Get arrayNullableProp
+   * @return arrayNullableProp
+   **/
+  public List<Object> getArrayNullableProp() {
+    return arrayNullableProp;
+  }
+
+  /**
+   * Set arrayNullableProp
+   */
+  public void setArrayNullableProp(List<Object> arrayNullableProp) {
+    this.arrayNullableProp = arrayNullableProp;
+  }
+
+  public NullableClass arrayNullableProp(List<Object> arrayNullableProp) {
+    this.arrayNullableProp = arrayNullableProp;
+    return this;
+  }
+
+  public NullableClass addArrayNullablePropItem(Object arrayNullablePropItem) {
+    if (this.arrayNullableProp == null) {
+      this.arrayNullableProp = new ArrayList<>();
+    }
+    this.arrayNullableProp.add(arrayNullablePropItem);
+    return this;
+  }
+
+  /**
+   * Get arrayAndItemsNullableProp
+   * @return arrayAndItemsNullableProp
+   **/
+  public List<Object> getArrayAndItemsNullableProp() {
+    return arrayAndItemsNullableProp;
+  }
+
+  /**
+   * Set arrayAndItemsNullableProp
+   */
+  public void setArrayAndItemsNullableProp(List<Object> arrayAndItemsNullableProp) {
+    this.arrayAndItemsNullableProp = arrayAndItemsNullableProp;
+  }
+
+  public NullableClass arrayAndItemsNullableProp(List<Object> arrayAndItemsNullableProp) {
+    this.arrayAndItemsNullableProp = arrayAndItemsNullableProp;
+    return this;
+  }
+
+  public NullableClass addArrayAndItemsNullablePropItem(Object arrayAndItemsNullablePropItem) {
+    if (this.arrayAndItemsNullableProp == null) {
+      this.arrayAndItemsNullableProp = new ArrayList<>();
+    }
+    this.arrayAndItemsNullableProp.add(arrayAndItemsNullablePropItem);
+    return this;
+  }
+
+  /**
+   * Get arrayItemsNullable
+   * @return arrayItemsNullable
+   **/
+  public List<Object> getArrayItemsNullable() {
+    return arrayItemsNullable;
+  }
+
+  /**
+   * Set arrayItemsNullable
+   */
+  public void setArrayItemsNullable(List<Object> arrayItemsNullable) {
+    this.arrayItemsNullable = arrayItemsNullable;
+  }
+
+  public NullableClass arrayItemsNullable(List<Object> arrayItemsNullable) {
+    this.arrayItemsNullable = arrayItemsNullable;
+    return this;
+  }
+
+  public NullableClass addArrayItemsNullableItem(Object arrayItemsNullableItem) {
+    if (this.arrayItemsNullable == null) {
+      this.arrayItemsNullable = new ArrayList<>();
+    }
+    this.arrayItemsNullable.add(arrayItemsNullableItem);
+    return this;
+  }
+
+  /**
+   * Get objectNullableProp
+   * @return objectNullableProp
+   **/
+  public Map<String, Object> getObjectNullableProp() {
+    return objectNullableProp;
+  }
+
+  /**
+   * Set objectNullableProp
+   */
+  public void setObjectNullableProp(Map<String, Object> objectNullableProp) {
+    this.objectNullableProp = objectNullableProp;
+  }
+
+  public NullableClass objectNullableProp(Map<String, Object> objectNullableProp) {
+    this.objectNullableProp = objectNullableProp;
+    return this;
+  }
+
+  public NullableClass putObjectNullablePropItem(String key, Object objectNullablePropItem) {
+    if (this.objectNullableProp == null) {
+      this.objectNullableProp = new HashMap<>();
+    }
+    this.objectNullableProp.put(key, objectNullablePropItem);
+    return this;
+  }
+
+  /**
+   * Get objectAndItemsNullableProp
+   * @return objectAndItemsNullableProp
+   **/
+  public Map<String, Object> getObjectAndItemsNullableProp() {
+    return objectAndItemsNullableProp;
+  }
+
+  /**
+   * Set objectAndItemsNullableProp
+   */
+  public void setObjectAndItemsNullableProp(Map<String, Object> objectAndItemsNullableProp) {
+    this.objectAndItemsNullableProp = objectAndItemsNullableProp;
+  }
+
+  public NullableClass objectAndItemsNullableProp(Map<String, Object> objectAndItemsNullableProp) {
+    this.objectAndItemsNullableProp = objectAndItemsNullableProp;
+    return this;
+  }
+
+  public NullableClass putObjectAndItemsNullablePropItem(String key, Object objectAndItemsNullablePropItem) {
+    if (this.objectAndItemsNullableProp == null) {
+      this.objectAndItemsNullableProp = new HashMap<>();
+    }
+    this.objectAndItemsNullableProp.put(key, objectAndItemsNullablePropItem);
+    return this;
+  }
+
+  /**
+   * Get objectItemsNullable
+   * @return objectItemsNullable
+   **/
+  public Map<String, Object> getObjectItemsNullable() {
+    return objectItemsNullable;
+  }
+
+  /**
+   * Set objectItemsNullable
+   */
+  public void setObjectItemsNullable(Map<String, Object> objectItemsNullable) {
+    this.objectItemsNullable = objectItemsNullable;
+  }
+
+  public NullableClass objectItemsNullable(Map<String, Object> objectItemsNullable) {
+    this.objectItemsNullable = objectItemsNullable;
+    return this;
+  }
+
+  public NullableClass putObjectItemsNullableItem(String key, Object objectItemsNullableItem) {
+    if (this.objectItemsNullable == null) {
+      this.objectItemsNullable = new HashMap<>();
+    }
+    this.objectItemsNullable.put(key, objectItemsNullableItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    NullableClass nullableClass = (NullableClass) o;
+    return Objects.equals(this.integerProp, nullableClass.integerProp) &&
+        Objects.equals(this.numberProp, nullableClass.numberProp) &&
+        Objects.equals(this.booleanProp, nullableClass.booleanProp) &&
+        Objects.equals(this.stringProp, nullableClass.stringProp) &&
+        Objects.equals(this.dateProp, nullableClass.dateProp) &&
+        Objects.equals(this.datetimeProp, nullableClass.datetimeProp) &&
+        Objects.equals(this.arrayNullableProp, nullableClass.arrayNullableProp) &&
+        Objects.equals(this.arrayAndItemsNullableProp, nullableClass.arrayAndItemsNullableProp) &&
+        Objects.equals(this.arrayItemsNullable, nullableClass.arrayItemsNullable) &&
+        Objects.equals(this.objectNullableProp, nullableClass.objectNullableProp) &&
+        Objects.equals(this.objectAndItemsNullableProp, nullableClass.objectAndItemsNullableProp) &&
+        Objects.equals(this.objectItemsNullable, nullableClass.objectItemsNullable) &&
+        super.equals(o);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(integerProp, numberProp, booleanProp, stringProp, dateProp, datetimeProp, arrayNullableProp, arrayAndItemsNullableProp, arrayItemsNullable, objectNullableProp, objectAndItemsNullableProp, objectItemsNullable, super.hashCode());
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class NullableClass {\n");
+    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+    sb.append("    integerProp: ").append(toIndentedString(integerProp)).append("\n");
+    sb.append("    numberProp: ").append(toIndentedString(numberProp)).append("\n");
+    sb.append("    booleanProp: ").append(toIndentedString(booleanProp)).append("\n");
+    sb.append("    stringProp: ").append(toIndentedString(stringProp)).append("\n");
+    sb.append("    dateProp: ").append(toIndentedString(dateProp)).append("\n");
+    sb.append("    datetimeProp: ").append(toIndentedString(datetimeProp)).append("\n");
+    sb.append("    arrayNullableProp: ").append(toIndentedString(arrayNullableProp)).append("\n");
+    sb.append("    arrayAndItemsNullableProp: ").append(toIndentedString(arrayAndItemsNullableProp)).append("\n");
+    sb.append("    arrayItemsNullable: ").append(toIndentedString(arrayItemsNullable)).append("\n");
+    sb.append("    objectNullableProp: ").append(toIndentedString(objectNullableProp)).append("\n");
+    sb.append("    objectAndItemsNullableProp: ").append(toIndentedString(objectAndItemsNullableProp)).append("\n");
+    sb.append("    objectItemsNullable: ").append(toIndentedString(objectItemsNullable)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/NumberOnly.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/NumberOnly.java
new file mode 100644
index 00000000000..58b8daf52b9
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/NumberOnly.java
@@ -0,0 +1,97 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.math.BigDecimal;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class NumberOnly  {
+  
+  @JsonbProperty("JustNumber")
+  private BigDecimal justNumber;
+
+  /**
+   * Get justNumber
+   * @return justNumber
+   **/
+  public BigDecimal getJustNumber() {
+    return justNumber;
+  }
+
+  /**
+   * Set justNumber
+   */
+  public void setJustNumber(BigDecimal justNumber) {
+    this.justNumber = justNumber;
+  }
+
+  public NumberOnly justNumber(BigDecimal justNumber) {
+    this.justNumber = justNumber;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    NumberOnly numberOnly = (NumberOnly) o;
+    return Objects.equals(this.justNumber, numberOnly.justNumber);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(justNumber);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class NumberOnly {\n");
+    
+    sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ObjectWithDeprecatedFields.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ObjectWithDeprecatedFields.java
new file mode 100644
index 00000000000..08ba5f09dfc
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ObjectWithDeprecatedFields.java
@@ -0,0 +1,190 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.openapitools.client.model.DeprecatedObject;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class ObjectWithDeprecatedFields  {
+  
+  @JsonbProperty("uuid")
+  private String uuid;
+
+  @JsonbProperty("id")
+  private BigDecimal id;
+
+  @JsonbProperty("deprecatedRef")
+  private DeprecatedObject deprecatedRef;
+
+  @JsonbProperty("bars")
+  private List<String> bars = null;
+
+  /**
+   * Get uuid
+   * @return uuid
+   **/
+  public String getUuid() {
+    return uuid;
+  }
+
+  /**
+   * Set uuid
+   */
+  public void setUuid(String uuid) {
+    this.uuid = uuid;
+  }
+
+  public ObjectWithDeprecatedFields uuid(String uuid) {
+    this.uuid = uuid;
+    return this;
+  }
+
+  /**
+   * Get id
+   * @return id
+   * @deprecated
+   **/
+  @Deprecated
+  public BigDecimal getId() {
+    return id;
+  }
+
+  /**
+   * Set id
+   */
+  public void setId(BigDecimal id) {
+    this.id = id;
+  }
+
+  public ObjectWithDeprecatedFields id(BigDecimal id) {
+    this.id = id;
+    return this;
+  }
+
+  /**
+   * Get deprecatedRef
+   * @return deprecatedRef
+   * @deprecated
+   **/
+  @Deprecated
+  public DeprecatedObject getDeprecatedRef() {
+    return deprecatedRef;
+  }
+
+  /**
+   * Set deprecatedRef
+   */
+  public void setDeprecatedRef(DeprecatedObject deprecatedRef) {
+    this.deprecatedRef = deprecatedRef;
+  }
+
+  public ObjectWithDeprecatedFields deprecatedRef(DeprecatedObject deprecatedRef) {
+    this.deprecatedRef = deprecatedRef;
+    return this;
+  }
+
+  /**
+   * Get bars
+   * @return bars
+   * @deprecated
+   **/
+  @Deprecated
+  public List<String> getBars() {
+    return bars;
+  }
+
+  /**
+   * Set bars
+   */
+  public void setBars(List<String> bars) {
+    this.bars = bars;
+  }
+
+  public ObjectWithDeprecatedFields bars(List<String> bars) {
+    this.bars = bars;
+    return this;
+  }
+
+  public ObjectWithDeprecatedFields addBarsItem(String barsItem) {
+    if (this.bars == null) {
+      this.bars = new ArrayList<>();
+    }
+    this.bars.add(barsItem);
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ObjectWithDeprecatedFields objectWithDeprecatedFields = (ObjectWithDeprecatedFields) o;
+    return Objects.equals(this.uuid, objectWithDeprecatedFields.uuid) &&
+        Objects.equals(this.id, objectWithDeprecatedFields.id) &&
+        Objects.equals(this.deprecatedRef, objectWithDeprecatedFields.deprecatedRef) &&
+        Objects.equals(this.bars, objectWithDeprecatedFields.bars);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(uuid, id, deprecatedRef, bars);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ObjectWithDeprecatedFields {\n");
+    
+    sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
+    sb.append("    id: ").append(toIndentedString(id)).append("\n");
+    sb.append("    deprecatedRef: ").append(toIndentedString(deprecatedRef)).append("\n");
+    sb.append("    bars: ").append(toIndentedString(bars)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Order.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Order.java
index 4f743c78a6c..e8f48097237 100644
--- a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Order.java
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Order.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -25,10 +25,8 @@ import javax.json.bind.serializer.SerializationContext;
 import javax.json.stream.JsonGenerator;
 import javax.json.stream.JsonParser;
 import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
 
-/**
-  * An order for a pets from the pet store
-  */
 
 public class Order  {
   
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/OuterComposite.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/OuterComposite.java
new file mode 100644
index 00000000000..43baed60c02
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/OuterComposite.java
@@ -0,0 +1,147 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.math.BigDecimal;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class OuterComposite  {
+  
+  @JsonbProperty("my_number")
+  private BigDecimal myNumber;
+
+  @JsonbProperty("my_string")
+  private String myString;
+
+  @JsonbProperty("my_boolean")
+  private Boolean myBoolean;
+
+  /**
+   * Get myNumber
+   * @return myNumber
+   **/
+  public BigDecimal getMyNumber() {
+    return myNumber;
+  }
+
+  /**
+   * Set myNumber
+   */
+  public void setMyNumber(BigDecimal myNumber) {
+    this.myNumber = myNumber;
+  }
+
+  public OuterComposite myNumber(BigDecimal myNumber) {
+    this.myNumber = myNumber;
+    return this;
+  }
+
+  /**
+   * Get myString
+   * @return myString
+   **/
+  public String getMyString() {
+    return myString;
+  }
+
+  /**
+   * Set myString
+   */
+  public void setMyString(String myString) {
+    this.myString = myString;
+  }
+
+  public OuterComposite myString(String myString) {
+    this.myString = myString;
+    return this;
+  }
+
+  /**
+   * Get myBoolean
+   * @return myBoolean
+   **/
+  public Boolean getMyBoolean() {
+    return myBoolean;
+  }
+
+  /**
+   * Set myBoolean
+   */
+  public void setMyBoolean(Boolean myBoolean) {
+    this.myBoolean = myBoolean;
+  }
+
+  public OuterComposite myBoolean(Boolean myBoolean) {
+    this.myBoolean = myBoolean;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    OuterComposite outerComposite = (OuterComposite) o;
+    return Objects.equals(this.myNumber, outerComposite.myNumber) &&
+        Objects.equals(this.myString, outerComposite.myString) &&
+        Objects.equals(this.myBoolean, outerComposite.myBoolean);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(myNumber, myString, myBoolean);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class OuterComposite {\n");
+    
+    sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
+    sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
+    sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/OuterEnum.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/OuterEnum.java
new file mode 100644
index 00000000000..bfdbf3a5077
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/OuterEnum.java
@@ -0,0 +1,77 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+/**
+ * Gets or Sets OuterEnum
+ */
+@JsonbTypeSerializer(OuterEnum.Serializer.class)
+@JsonbTypeDeserializer(OuterEnum.Deserializer.class)
+public enum OuterEnum {
+  
+  PLACED("placed"),
+  
+  APPROVED("approved"),
+  
+  DELIVERED("delivered");
+
+  private String value;
+
+  OuterEnum(String value) {
+    this.value = value;
+  }
+
+  @Override
+  public String toString() {
+    return String.valueOf(value);
+  }
+
+  public static final class Deserializer implements JsonbDeserializer<OuterEnum> {
+    @Override
+    public OuterEnum deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+      return fromValue(parser.getString());
+    }
+  }
+
+  public static final class Serializer implements JsonbSerializer<OuterEnum> {
+    @Override
+    public void serialize(OuterEnum obj, JsonGenerator generator, SerializationContext ctx) {
+      generator.write(obj.value);
+    }
+  }
+
+  public static OuterEnum fromValue(String text) {
+    for (OuterEnum b : OuterEnum.values()) {
+      if (String.valueOf(b.value).equals(text)) {
+        return b;
+      }
+    }
+    throw new IllegalArgumentException("Unexpected value '" + text + "'");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/OuterEnumDefaultValue.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/OuterEnumDefaultValue.java
new file mode 100644
index 00000000000..ce5a0dfa611
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/OuterEnumDefaultValue.java
@@ -0,0 +1,77 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+/**
+ * Gets or Sets OuterEnumDefaultValue
+ */
+@JsonbTypeSerializer(OuterEnumDefaultValue.Serializer.class)
+@JsonbTypeDeserializer(OuterEnumDefaultValue.Deserializer.class)
+public enum OuterEnumDefaultValue {
+  
+  PLACED("placed"),
+  
+  APPROVED("approved"),
+  
+  DELIVERED("delivered");
+
+  private String value;
+
+  OuterEnumDefaultValue(String value) {
+    this.value = value;
+  }
+
+  @Override
+  public String toString() {
+    return String.valueOf(value);
+  }
+
+  public static final class Deserializer implements JsonbDeserializer<OuterEnumDefaultValue> {
+    @Override
+    public OuterEnumDefaultValue deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+      return fromValue(parser.getString());
+    }
+  }
+
+  public static final class Serializer implements JsonbSerializer<OuterEnumDefaultValue> {
+    @Override
+    public void serialize(OuterEnumDefaultValue obj, JsonGenerator generator, SerializationContext ctx) {
+      generator.write(obj.value);
+    }
+  }
+
+  public static OuterEnumDefaultValue fromValue(String text) {
+    for (OuterEnumDefaultValue b : OuterEnumDefaultValue.values()) {
+      if (String.valueOf(b.value).equals(text)) {
+        return b;
+      }
+    }
+    throw new IllegalArgumentException("Unexpected value '" + text + "'");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/OuterEnumInteger.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/OuterEnumInteger.java
new file mode 100644
index 00000000000..bc9a3e33a20
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/OuterEnumInteger.java
@@ -0,0 +1,77 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+/**
+ * Gets or Sets OuterEnumInteger
+ */
+@JsonbTypeSerializer(OuterEnumInteger.Serializer.class)
+@JsonbTypeDeserializer(OuterEnumInteger.Deserializer.class)
+public enum OuterEnumInteger {
+  
+  NUMBER_0(0),
+  
+  NUMBER_1(1),
+  
+  NUMBER_2(2);
+
+  private Integer value;
+
+  OuterEnumInteger(Integer value) {
+    this.value = value;
+  }
+
+  @Override
+  public String toString() {
+    return String.valueOf(value);
+  }
+
+  public static final class Deserializer implements JsonbDeserializer<OuterEnumInteger> {
+    @Override
+    public OuterEnumInteger deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+      return fromValue(parser.getString());
+    }
+  }
+
+  public static final class Serializer implements JsonbSerializer<OuterEnumInteger> {
+    @Override
+    public void serialize(OuterEnumInteger obj, JsonGenerator generator, SerializationContext ctx) {
+      generator.write(obj.value);
+    }
+  }
+
+  public static OuterEnumInteger fromValue(String text) {
+    for (OuterEnumInteger b : OuterEnumInteger.values()) {
+      if (String.valueOf(b.value).equals(text)) {
+        return b;
+      }
+    }
+    throw new IllegalArgumentException("Unexpected value '" + text + "'");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/OuterEnumIntegerDefaultValue.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/OuterEnumIntegerDefaultValue.java
new file mode 100644
index 00000000000..2df60a48b9e
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/OuterEnumIntegerDefaultValue.java
@@ -0,0 +1,77 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+/**
+ * Gets or Sets OuterEnumIntegerDefaultValue
+ */
+@JsonbTypeSerializer(OuterEnumIntegerDefaultValue.Serializer.class)
+@JsonbTypeDeserializer(OuterEnumIntegerDefaultValue.Deserializer.class)
+public enum OuterEnumIntegerDefaultValue {
+  
+  NUMBER_0(0),
+  
+  NUMBER_1(1),
+  
+  NUMBER_2(2);
+
+  private Integer value;
+
+  OuterEnumIntegerDefaultValue(Integer value) {
+    this.value = value;
+  }
+
+  @Override
+  public String toString() {
+    return String.valueOf(value);
+  }
+
+  public static final class Deserializer implements JsonbDeserializer<OuterEnumIntegerDefaultValue> {
+    @Override
+    public OuterEnumIntegerDefaultValue deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+      return fromValue(parser.getString());
+    }
+  }
+
+  public static final class Serializer implements JsonbSerializer<OuterEnumIntegerDefaultValue> {
+    @Override
+    public void serialize(OuterEnumIntegerDefaultValue obj, JsonGenerator generator, SerializationContext ctx) {
+      generator.write(obj.value);
+    }
+  }
+
+  public static OuterEnumIntegerDefaultValue fromValue(String text) {
+    for (OuterEnumIntegerDefaultValue b : OuterEnumIntegerDefaultValue.values()) {
+      if (String.valueOf(b.value).equals(text)) {
+        return b;
+      }
+    }
+    throw new IllegalArgumentException("Unexpected value '" + text + "'");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/OuterObjectWithEnumProperty.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/OuterObjectWithEnumProperty.java
new file mode 100644
index 00000000000..da99561a45c
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/OuterObjectWithEnumProperty.java
@@ -0,0 +1,97 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import org.openapitools.client.model.OuterEnumInteger;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class OuterObjectWithEnumProperty  {
+  
+  @JsonbProperty("value")
+  private OuterEnumInteger value;
+
+  /**
+   * Get value
+   * @return value
+   **/
+  public OuterEnumInteger getValue() {
+    return value;
+  }
+
+  /**
+   * Set value
+   */
+  public void setValue(OuterEnumInteger value) {
+    this.value = value;
+  }
+
+  public OuterObjectWithEnumProperty value(OuterEnumInteger value) {
+    this.value = value;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    OuterObjectWithEnumProperty outerObjectWithEnumProperty = (OuterObjectWithEnumProperty) o;
+    return Objects.equals(this.value, outerObjectWithEnumProperty.value);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(value);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class OuterObjectWithEnumProperty {\n");
+    
+    sb.append("    value: ").append(toIndentedString(value)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ParentWithNullable.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ParentWithNullable.java
new file mode 100644
index 00000000000..f26bca67bcc
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ParentWithNullable.java
@@ -0,0 +1,163 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class ParentWithNullable  {
+  
+  @JsonbTypeSerializer(TypeEnum.Serializer.class)
+  @JsonbTypeDeserializer(TypeEnum.Deserializer.class)
+  public enum TypeEnum {
+
+    CHILD_WITH_NULLABLE(String.valueOf("ChildWithNullable"));
+
+
+    String value;
+
+    TypeEnum (String v) {
+        value = v;
+    }
+
+    public String value() {
+        return value;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(value);
+    }
+
+    public static final class Deserializer implements JsonbDeserializer<TypeEnum> {
+        @Override
+        public TypeEnum deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+            for (TypeEnum b : TypeEnum.values()) {
+                if (String.valueOf(b.value).equals(parser.getString())) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + parser.getString() + "'");
+        }
+    }
+
+    public static final class Serializer implements JsonbSerializer<TypeEnum> {
+        @Override
+        public void serialize(TypeEnum obj, JsonGenerator generator, SerializationContext ctx) {
+            generator.write(obj.value);
+        }
+    }
+  }
+
+  @JsonbProperty("type")
+  private TypeEnum type;
+
+  @JsonbProperty("nullableProperty")
+  private String nullableProperty;
+
+  /**
+   * Get type
+   * @return type
+   **/
+  public TypeEnum getType() {
+    return type;
+  }
+
+  /**
+   * Set type
+   */
+  public void setType(TypeEnum type) {
+    this.type = type;
+  }
+
+  public ParentWithNullable type(TypeEnum type) {
+    this.type = type;
+    return this;
+  }
+
+  /**
+   * Get nullableProperty
+   * @return nullableProperty
+   **/
+  public String getNullableProperty() {
+    return nullableProperty;
+  }
+
+  /**
+   * Set nullableProperty
+   */
+  public void setNullableProperty(String nullableProperty) {
+    this.nullableProperty = nullableProperty;
+  }
+
+  public ParentWithNullable nullableProperty(String nullableProperty) {
+    this.nullableProperty = nullableProperty;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ParentWithNullable parentWithNullable = (ParentWithNullable) o;
+    return Objects.equals(this.type, parentWithNullable.type) &&
+        Objects.equals(this.nullableProperty, parentWithNullable.nullableProperty);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(type, nullableProperty);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ParentWithNullable {\n");
+    
+    sb.append("    type: ").append(toIndentedString(type)).append("\n");
+    sb.append("    nullableProperty: ").append(toIndentedString(nullableProperty)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Pet.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Pet.java
index 03b5f5cd88f..826495b9345 100644
--- a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Pet.java
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Pet.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -16,7 +16,9 @@ import java.util.Objects;
 import java.util.Arrays;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.LinkedHashSet;
 import java.util.List;
+import java.util.Set;
 import org.openapitools.client.model.Category;
 import org.openapitools.client.model.Tag;
 import java.lang.reflect.Type;
@@ -29,10 +31,8 @@ import javax.json.bind.serializer.SerializationContext;
 import javax.json.stream.JsonGenerator;
 import javax.json.stream.JsonParser;
 import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
 
-/**
-  * A pet for sale in the pet store
-  */
 
 public class Pet  {
   
@@ -46,7 +46,7 @@ public class Pet  {
   private String name;
 
   @JsonbProperty("photoUrls")
-  private List<String> photoUrls = new ArrayList<>();
+  private Set<String> photoUrls = new LinkedHashSet<>();
 
   @JsonbProperty("tags")
   private List<Tag> tags = null;
@@ -163,25 +163,25 @@ public class Pet  {
    * Get photoUrls
    * @return photoUrls
    **/
-  public List<String> getPhotoUrls() {
+  public Set<String> getPhotoUrls() {
     return photoUrls;
   }
 
   /**
    * Set photoUrls
    */
-  public void setPhotoUrls(List<String> photoUrls) {
+  public void setPhotoUrls(Set<String> photoUrls) {
     this.photoUrls = photoUrls;
   }
 
-  public Pet photoUrls(List<String> photoUrls) {
+  public Pet photoUrls(Set<String> photoUrls) {
     this.photoUrls = photoUrls;
     return this;
   }
 
   public Pet addPhotoUrlsItem(String photoUrlsItem) {
     if (this.photoUrls == null) {
-      this.photoUrls = new ArrayList<>();
+      this.photoUrls = new LinkedHashSet<>();
     }
     this.photoUrls.add(photoUrlsItem);
     return this;
@@ -218,9 +218,7 @@ public class Pet  {
   /**
    * pet status in the store
    * @return status
-   * @deprecated
    **/
-  @Deprecated
   public StatusEnum getStatus() {
     return status;
   }
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ReadOnlyFirst.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ReadOnlyFirst.java
new file mode 100644
index 00000000000..808fb7c3e60
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ReadOnlyFirst.java
@@ -0,0 +1,120 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class ReadOnlyFirst  {
+  
+  @JsonbProperty("bar")
+  private String bar;
+
+  @JsonbProperty("baz")
+  private String baz;
+
+  public ReadOnlyFirst() {
+  }
+
+ @JsonbCreator
+  public ReadOnlyFirst(
+    @JsonbProperty(value = "bar", nillable = true) String bar
+  ) {
+    this.bar = bar;
+  }
+  
+  /**
+   * Get bar
+   * @return bar
+   **/
+  public String getBar() {
+    return bar;
+  }
+
+
+  /**
+   * Get baz
+   * @return baz
+   **/
+  public String getBaz() {
+    return baz;
+  }
+
+  /**
+   * Set baz
+   */
+  public void setBaz(String baz) {
+    this.baz = baz;
+  }
+
+  public ReadOnlyFirst baz(String baz) {
+    this.baz = baz;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ReadOnlyFirst readOnlyFirst = (ReadOnlyFirst) o;
+    return Objects.equals(this.bar, readOnlyFirst.bar) &&
+        Objects.equals(this.baz, readOnlyFirst.baz);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(bar, baz);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ReadOnlyFirst {\n");
+    
+    sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
+    sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/SingleRefType.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/SingleRefType.java
new file mode 100644
index 00000000000..503728d421d
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/SingleRefType.java
@@ -0,0 +1,75 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+/**
+ * Gets or Sets SingleRefType
+ */
+@JsonbTypeSerializer(SingleRefType.Serializer.class)
+@JsonbTypeDeserializer(SingleRefType.Deserializer.class)
+public enum SingleRefType {
+  
+  ADMIN("admin"),
+  
+  USER("user");
+
+  private String value;
+
+  SingleRefType(String value) {
+    this.value = value;
+  }
+
+  @Override
+  public String toString() {
+    return String.valueOf(value);
+  }
+
+  public static final class Deserializer implements JsonbDeserializer<SingleRefType> {
+    @Override
+    public SingleRefType deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+      return fromValue(parser.getString());
+    }
+  }
+
+  public static final class Serializer implements JsonbSerializer<SingleRefType> {
+    @Override
+    public void serialize(SingleRefType obj, JsonGenerator generator, SerializationContext ctx) {
+      generator.write(obj.value);
+    }
+  }
+
+  public static SingleRefType fromValue(String text) {
+    for (SingleRefType b : SingleRefType.values()) {
+      if (String.valueOf(b.value).equals(text)) {
+        return b;
+      }
+    }
+    throw new IllegalArgumentException("Unexpected value '" + text + "'");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/SpecialModelName.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/SpecialModelName.java
new file mode 100644
index 00000000000..4148cefea40
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/SpecialModelName.java
@@ -0,0 +1,96 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class SpecialModelName  {
+  
+  @JsonbProperty("$special[property.name]")
+  private Long $specialPropertyName;
+
+  /**
+   * Get $specialPropertyName
+   * @return $specialPropertyName
+   **/
+  public Long get$SpecialPropertyName() {
+    return $specialPropertyName;
+  }
+
+  /**
+   * Set $specialPropertyName
+   */
+  public void set$SpecialPropertyName(Long $specialPropertyName) {
+    this.$specialPropertyName = $specialPropertyName;
+  }
+
+  public SpecialModelName $specialPropertyName(Long $specialPropertyName) {
+    this.$specialPropertyName = $specialPropertyName;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    SpecialModelName specialModelName = (SpecialModelName) o;
+    return Objects.equals(this.$specialPropertyName, specialModelName.$specialPropertyName);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash($specialPropertyName);
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class SpecialModelName {\n");
+    
+    sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Tag.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Tag.java
index 5bb307506c9..42ffd13fa6e 100644
--- a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Tag.java
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Tag.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -24,10 +24,8 @@ import javax.json.bind.serializer.SerializationContext;
 import javax.json.stream.JsonGenerator;
 import javax.json.stream.JsonParser;
 import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
 
-/**
-  * A tag for a pet
-  */
 
 public class Tag  {
   
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/TestInlineFreeformAdditionalPropertiesRequest.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/TestInlineFreeformAdditionalPropertiesRequest.java
new file mode 100644
index 00000000000..284859c07b2
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/TestInlineFreeformAdditionalPropertiesRequest.java
@@ -0,0 +1,99 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Map;
+import java.lang.reflect.Type;
+import javax.json.bind.annotation.JsonbTypeDeserializer;
+import javax.json.bind.annotation.JsonbTypeSerializer;
+import javax.json.bind.serializer.DeserializationContext;
+import javax.json.bind.serializer.JsonbDeserializer;
+import javax.json.bind.serializer.JsonbSerializer;
+import javax.json.bind.serializer.SerializationContext;
+import javax.json.stream.JsonGenerator;
+import javax.json.stream.JsonParser;
+import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
+
+
+public class TestInlineFreeformAdditionalPropertiesRequest extends HashMap<String, Object> {
+  
+  @JsonbProperty("someProperty")
+  private String someProperty;
+
+  /**
+   * Get someProperty
+   * @return someProperty
+   **/
+  public String getSomeProperty() {
+    return someProperty;
+  }
+
+  /**
+   * Set someProperty
+   */
+  public void setSomeProperty(String someProperty) {
+    this.someProperty = someProperty;
+  }
+
+  public TestInlineFreeformAdditionalPropertiesRequest someProperty(String someProperty) {
+    this.someProperty = someProperty;
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TestInlineFreeformAdditionalPropertiesRequest testInlineFreeformAdditionalPropertiesRequest = (TestInlineFreeformAdditionalPropertiesRequest) o;
+    return Objects.equals(this.someProperty, testInlineFreeformAdditionalPropertiesRequest.someProperty) &&
+        super.equals(o);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(someProperty, super.hashCode());
+  }
+
+  /**
+   * Create a string representation of this pojo.
+   */
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TestInlineFreeformAdditionalPropertiesRequest {\n");
+    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+    sb.append("    someProperty: ").append(toIndentedString(someProperty)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/User.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/User.java
index 1542e3dfc58..0558306bd63 100644
--- a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/User.java
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/User.java
@@ -1,6 +1,6 @@
 /**
  * OpenAPI Petstore
- * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
  *
  * The version of the OpenAPI document: 1.0.0
  * 
@@ -24,10 +24,8 @@ import javax.json.bind.serializer.SerializationContext;
 import javax.json.stream.JsonGenerator;
 import javax.json.stream.JsonParser;
 import javax.json.bind.annotation.JsonbProperty;
+import javax.json.bind.annotation.JsonbCreator;
 
-/**
-  * A User who is purchasing from the pet store
-  */
 
 public class User  {
   
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/api/AnotherFakeApiTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/api/AnotherFakeApiTest.java
new file mode 100644
index 00000000000..041f9f7136a
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/api/AnotherFakeApiTest.java
@@ -0,0 +1,68 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.api;
+
+import org.openapitools.client.model.Client;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.Assertions;
+
+import org.eclipse.microprofile.rest.client.RestClientBuilder;
+
+import java.net.URL;
+import java.net.MalformedURLException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * OpenAPI Petstore Test
+ *
+ * API tests for AnotherFakeApi
+ */
+public class AnotherFakeApiTest {
+
+    private AnotherFakeApi client;
+    private String baseUrl = "http://localhost:9080";
+
+    @BeforeEach
+    public void setup() throws MalformedURLException {
+        client = RestClientBuilder.newBuilder()
+                        .baseUrl(new URL(baseUrl))
+                        .register(ApiException.class)
+                        .build(AnotherFakeApi.class);
+    }
+
+    
+    /**
+     * To test special tags
+     *
+     * To test special tags and operation ID starting with number
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void call123testSpecialTagsTest() {
+        // TODO: test validations
+        Client client = null;
+        //Client response = api.call123testSpecialTags(client);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/api/DefaultApiTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/api/DefaultApiTest.java
new file mode 100644
index 00000000000..577645a5678
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/api/DefaultApiTest.java
@@ -0,0 +1,63 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.api;
+
+import org.openapitools.client.model.FooGetDefaultResponse;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.Assertions;
+
+import org.eclipse.microprofile.rest.client.RestClientBuilder;
+
+import java.net.URL;
+import java.net.MalformedURLException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * OpenAPI Petstore Test
+ *
+ * API tests for DefaultApi
+ */
+public class DefaultApiTest {
+
+    private DefaultApi client;
+    private String baseUrl = "http://localhost:9080";
+
+    @BeforeEach
+    public void setup() throws MalformedURLException {
+        client = RestClientBuilder.newBuilder()
+                        .baseUrl(new URL(baseUrl))
+                        .register(ApiException.class)
+                        .build(DefaultApi.class);
+    }
+
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fooGetTest() {
+        // TODO: test validations
+        //FooGetDefaultResponse response = api.fooGet();
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/api/FakeApiTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/api/FakeApiTest.java
new file mode 100644
index 00000000000..d25f4239905
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/api/FakeApiTest.java
@@ -0,0 +1,449 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.api;
+
+import java.math.BigDecimal;
+import org.openapitools.client.model.ChildWithNullable;
+import org.openapitools.client.model.Client;
+import java.util.Date;
+import org.openapitools.client.model.EnumClass;
+import org.openapitools.client.model.FakeBigDecimalMap200Response;
+import java.io.File;
+import org.openapitools.client.model.FileSchemaTestClass;
+import org.openapitools.client.model.HealthCheckResult;
+import org.openapitools.client.model.OuterComposite;
+import org.openapitools.client.model.OuterObjectWithEnumProperty;
+import org.openapitools.client.model.Pet;
+import org.openapitools.client.model.TestInlineFreeformAdditionalPropertiesRequest;
+import org.openapitools.client.model.User;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.Assertions;
+
+import org.eclipse.microprofile.rest.client.RestClientBuilder;
+
+import java.net.URL;
+import java.net.MalformedURLException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * OpenAPI Petstore Test
+ *
+ * API tests for FakeApi
+ */
+public class FakeApiTest {
+
+    private FakeApi client;
+    private String baseUrl = "http://localhost:9080";
+
+    @BeforeEach
+    public void setup() throws MalformedURLException {
+        client = RestClientBuilder.newBuilder()
+                        .baseUrl(new URL(baseUrl))
+                        .register(ApiException.class)
+                        .build(FakeApi.class);
+    }
+
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fakeBigDecimalMapTest() {
+        // TODO: test validations
+        //FakeBigDecimalMap200Response response = api.fakeBigDecimalMap();
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * Health check endpoint
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fakeHealthGetTest() {
+        // TODO: test validations
+        //HealthCheckResult response = api.fakeHealthGet();
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * test http signature authentication
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fakeHttpSignatureTestTest() {
+        // TODO: test validations
+        Pet pet = null;
+        String query1 = null;
+        String header1 = null;
+        //api.fakeHttpSignatureTest(pet, query1, header1);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fakeOuterBooleanSerializeTest() {
+        // TODO: test validations
+        Boolean body = null;
+        //Boolean response = api.fakeOuterBooleanSerialize(body);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fakeOuterCompositeSerializeTest() {
+        // TODO: test validations
+        OuterComposite outerComposite = null;
+        //OuterComposite response = api.fakeOuterCompositeSerialize(outerComposite);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fakeOuterNumberSerializeTest() {
+        // TODO: test validations
+        BigDecimal body = null;
+        //BigDecimal response = api.fakeOuterNumberSerialize(body);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fakeOuterStringSerializeTest() {
+        // TODO: test validations
+        String body = null;
+        //String response = api.fakeOuterStringSerialize(body);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fakePropertyEnumIntegerSerializeTest() {
+        // TODO: test validations
+        OuterObjectWithEnumProperty outerObjectWithEnumProperty = null;
+        //OuterObjectWithEnumProperty response = api.fakePropertyEnumIntegerSerialize(outerObjectWithEnumProperty);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * test referenced additionalProperties
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testAdditionalPropertiesReferenceTest() {
+        // TODO: test validations
+        Map<String, Object> requestBody = null;
+        //api.testAdditionalPropertiesReference(requestBody);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testBodyWithBinaryTest() {
+        // TODO: test validations
+        org.apache.cxf.jaxrs.ext.multipart.Attachment body = null;
+        //api.testBodyWithBinary(body);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testBodyWithFileSchemaTest() {
+        // TODO: test validations
+        FileSchemaTestClass fileSchemaTestClass = null;
+        //api.testBodyWithFileSchema(fileSchemaTestClass);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testBodyWithQueryParamsTest() {
+        // TODO: test validations
+        String query = null;
+        User user = null;
+        //api.testBodyWithQueryParams(query, user);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * To test \&quot;client\&quot; model
+     *
+     * To test \&quot;client\&quot; model
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testClientModelTest() {
+        // TODO: test validations
+        Client client = null;
+        //Client response = api.testClientModel(client);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * 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 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testEndpointParametersTest() {
+        // TODO: test validations
+        BigDecimal number = null;
+        Double _double = null;
+        String patternWithoutDelimiter = null;
+        byte[] _byte = null;
+        Integer integer = null;
+        Integer int32 = null;
+        Long int64 = null;
+        Float _float = null;
+        String string = null;
+        org.apache.cxf.jaxrs.ext.multipart.Attachment binary = null;
+        Date date = null;
+        Date dateTime = null;
+        String password = null;
+        String paramCallback = null;
+        //api.testEndpointParameters(number, _double, patternWithoutDelimiter, _byte, integer, int32, int64, _float, string, binary, date, dateTime, password, paramCallback);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * To test enum parameters
+     *
+     * To test enum parameters
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testEnumParametersTest() {
+        // TODO: test validations
+        List<String> enumHeaderStringArray = null;
+        String enumHeaderString = null;
+        List<String> enumQueryStringArray = null;
+        String enumQueryString = null;
+        Integer enumQueryInteger = null;
+        Double enumQueryDouble = null;
+        List<EnumClass> enumQueryModelArray = null;
+        List<String> enumFormStringArray = null;
+        String enumFormString = null;
+        //api.testEnumParameters(enumHeaderStringArray, enumHeaderString, enumQueryStringArray, enumQueryString, enumQueryInteger, enumQueryDouble, enumQueryModelArray, enumFormStringArray, enumFormString);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * Fake endpoint to test group parameters (optional)
+     *
+     * Fake endpoint to test group parameters (optional)
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testGroupParametersTest() {
+        // TODO: test validations
+        Integer requiredStringGroup = null;
+        Boolean requiredBooleanGroup = null;
+        Long requiredInt64Group = null;
+        Integer stringGroup = null;
+        Boolean booleanGroup = null;
+        Long int64Group = null;
+        //api.testGroupParameters(requiredStringGroup, requiredBooleanGroup, requiredInt64Group, stringGroup, booleanGroup, int64Group);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * test inline additionalProperties
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testInlineAdditionalPropertiesTest() {
+        // TODO: test validations
+        Map<String, String> requestBody = null;
+        //api.testInlineAdditionalProperties(requestBody);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * test inline free-form additionalProperties
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testInlineFreeformAdditionalPropertiesTest() {
+        // TODO: test validations
+        TestInlineFreeformAdditionalPropertiesRequest testInlineFreeformAdditionalPropertiesRequest = null;
+        //api.testInlineFreeformAdditionalProperties(testInlineFreeformAdditionalPropertiesRequest);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * test json serialization of form data
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testJsonFormDataTest() {
+        // TODO: test validations
+        String param = null;
+        String param2 = null;
+        //api.testJsonFormData(param, param2);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * test nullable parent property
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testNullableTest() {
+        // TODO: test validations
+        ChildWithNullable childWithNullable = null;
+        //api.testNullable(childWithNullable);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testQueryParameterCollectionFormatTest() {
+        // TODO: test validations
+        List<String> pipe = null;
+        List<String> ioutil = null;
+        List<String> http = null;
+        List<String> url = null;
+        List<String> context = null;
+        String allowEmpty = null;
+        Map<String, String> language = null;
+        //api.testQueryParameterCollectionFormat(pipe, ioutil, http, url, context, allowEmpty, language);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+    /**
+     * test referenced string map
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testStringMapReferenceTest() {
+        // TODO: test validations
+        Map<String, String> requestBody = null;
+        //api.testStringMapReference(requestBody);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/api/FakeClassnameTags123ApiTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/api/FakeClassnameTags123ApiTest.java
new file mode 100644
index 00000000000..e5ba1cc1b92
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/api/FakeClassnameTags123ApiTest.java
@@ -0,0 +1,68 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.api;
+
+import org.openapitools.client.model.Client;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.Assertions;
+
+import org.eclipse.microprofile.rest.client.RestClientBuilder;
+
+import java.net.URL;
+import java.net.MalformedURLException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * OpenAPI Petstore Test
+ *
+ * API tests for FakeClassnameTags123Api
+ */
+public class FakeClassnameTags123ApiTest {
+
+    private FakeClassnameTags123Api client;
+    private String baseUrl = "http://localhost:9080";
+
+    @BeforeEach
+    public void setup() throws MalformedURLException {
+        client = RestClientBuilder.newBuilder()
+                        .baseUrl(new URL(baseUrl))
+                        .register(ApiException.class)
+                        .build(FakeClassnameTags123Api.class);
+    }
+
+    
+    /**
+     * To test class name in snake case
+     *
+     * To test class name in snake case
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testClassnameTest() {
+        // TODO: test validations
+        Client client = null;
+        //Client response = api.testClassname(client);
+        //Assertions.assertNotNull(response);
+
+
+    }
+    
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/AdditionalPropertiesClassTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/AdditionalPropertiesClassTest.java
new file mode 100644
index 00000000000..c33042cf8e7
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/AdditionalPropertiesClassTest.java
@@ -0,0 +1,52 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.HashMap;
+import java.util.Map;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for AdditionalPropertiesClass
+ */
+class AdditionalPropertiesClassTest {
+    private final AdditionalPropertiesClass model = new AdditionalPropertiesClass();
+
+    /**
+     * Model tests for AdditionalPropertiesClass
+     */
+    @Test
+    void testAdditionalPropertiesClass() {
+        // TODO: test AdditionalPropertiesClass
+    }
+
+    /**
+     * Test the property 'mapProperty'
+     */
+    @Test
+    void mapPropertyTest() {
+        // TODO: test mapProperty
+    }
+
+    /**
+     * Test the property 'mapOfMapProperty'
+     */
+    @Test
+    void mapOfMapPropertyTest() {
+        // TODO: test mapOfMapProperty
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/AllOfWithSingleRefTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/AllOfWithSingleRefTest.java
new file mode 100644
index 00000000000..ba32c589b85
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/AllOfWithSingleRefTest.java
@@ -0,0 +1,51 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.openapitools.client.model.SingleRefType;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for AllOfWithSingleRef
+ */
+class AllOfWithSingleRefTest {
+    private final AllOfWithSingleRef model = new AllOfWithSingleRef();
+
+    /**
+     * Model tests for AllOfWithSingleRef
+     */
+    @Test
+    void testAllOfWithSingleRef() {
+        // TODO: test AllOfWithSingleRef
+    }
+
+    /**
+     * Test the property 'username'
+     */
+    @Test
+    void usernameTest() {
+        // TODO: test username
+    }
+
+    /**
+     * Test the property 'singleRefType'
+     */
+    @Test
+    void singleRefTypeTest() {
+        // TODO: test singleRefType
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/AnimalTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/AnimalTest.java
new file mode 100644
index 00000000000..bf91c4a20f0
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/AnimalTest.java
@@ -0,0 +1,50 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for Animal
+ */
+class AnimalTest {
+    private final Animal model = new Animal();
+
+    /**
+     * Model tests for Animal
+     */
+    @Test
+    void testAnimal() {
+        // TODO: test Animal
+    }
+
+    /**
+     * Test the property 'className'
+     */
+    @Test
+    void classNameTest() {
+        // TODO: test className
+    }
+
+    /**
+     * Test the property 'color'
+     */
+    @Test
+    void colorTest() {
+        // TODO: test color
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnlyTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnlyTest.java
new file mode 100644
index 00000000000..4a72072e65e
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnlyTest.java
@@ -0,0 +1,46 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ArrayOfArrayOfNumberOnly
+ */
+class ArrayOfArrayOfNumberOnlyTest {
+    private final ArrayOfArrayOfNumberOnly model = new ArrayOfArrayOfNumberOnly();
+
+    /**
+     * Model tests for ArrayOfArrayOfNumberOnly
+     */
+    @Test
+    void testArrayOfArrayOfNumberOnly() {
+        // TODO: test ArrayOfArrayOfNumberOnly
+    }
+
+    /**
+     * Test the property 'arrayArrayNumber'
+     */
+    @Test
+    void arrayArrayNumberTest() {
+        // TODO: test arrayArrayNumber
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ArrayOfNumberOnlyTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ArrayOfNumberOnlyTest.java
new file mode 100644
index 00000000000..8f6a0038a23
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ArrayOfNumberOnlyTest.java
@@ -0,0 +1,46 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ArrayOfNumberOnly
+ */
+class ArrayOfNumberOnlyTest {
+    private final ArrayOfNumberOnly model = new ArrayOfNumberOnly();
+
+    /**
+     * Model tests for ArrayOfNumberOnly
+     */
+    @Test
+    void testArrayOfNumberOnly() {
+        // TODO: test ArrayOfNumberOnly
+    }
+
+    /**
+     * Test the property 'arrayNumber'
+     */
+    @Test
+    void arrayNumberTest() {
+        // TODO: test arrayNumber
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ArrayTestTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ArrayTestTest.java
new file mode 100644
index 00000000000..0f7d0d93ee7
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ArrayTestTest.java
@@ -0,0 +1,62 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.openapitools.client.model.ReadOnlyFirst;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ArrayTest
+ */
+class ArrayTestTest {
+    private final ArrayTest model = new ArrayTest();
+
+    /**
+     * Model tests for ArrayTest
+     */
+    @Test
+    void testArrayTest() {
+        // TODO: test ArrayTest
+    }
+
+    /**
+     * Test the property 'arrayOfString'
+     */
+    @Test
+    void arrayOfStringTest() {
+        // TODO: test arrayOfString
+    }
+
+    /**
+     * Test the property 'arrayArrayOfInteger'
+     */
+    @Test
+    void arrayArrayOfIntegerTest() {
+        // TODO: test arrayArrayOfInteger
+    }
+
+    /**
+     * Test the property 'arrayArrayOfModel'
+     */
+    @Test
+    void arrayArrayOfModelTest() {
+        // TODO: test arrayArrayOfModel
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/CapitalizationTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/CapitalizationTest.java
new file mode 100644
index 00000000000..cc892e34a39
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/CapitalizationTest.java
@@ -0,0 +1,82 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for Capitalization
+ */
+class CapitalizationTest {
+    private final Capitalization model = new Capitalization();
+
+    /**
+     * Model tests for Capitalization
+     */
+    @Test
+    void testCapitalization() {
+        // TODO: test Capitalization
+    }
+
+    /**
+     * Test the property 'smallCamel'
+     */
+    @Test
+    void smallCamelTest() {
+        // TODO: test smallCamel
+    }
+
+    /**
+     * Test the property 'capitalCamel'
+     */
+    @Test
+    void capitalCamelTest() {
+        // TODO: test capitalCamel
+    }
+
+    /**
+     * Test the property 'smallSnake'
+     */
+    @Test
+    void smallSnakeTest() {
+        // TODO: test smallSnake
+    }
+
+    /**
+     * Test the property 'capitalSnake'
+     */
+    @Test
+    void capitalSnakeTest() {
+        // TODO: test capitalSnake
+    }
+
+    /**
+     * Test the property 'scAETHFlowPoints'
+     */
+    @Test
+    void scAETHFlowPointsTest() {
+        // TODO: test scAETHFlowPoints
+    }
+
+    /**
+     * Test the property 'ATT_NAME'
+     */
+    @Test
+    void ATT_NAMETest() {
+        // TODO: test ATT_NAME
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/CatTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/CatTest.java
new file mode 100644
index 00000000000..c67c1b01b9c
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/CatTest.java
@@ -0,0 +1,59 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.openapitools.client.model.Animal;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for Cat
+ */
+class CatTest {
+    private final Cat model = new Cat();
+
+    /**
+     * Model tests for Cat
+     */
+    @Test
+    void testCat() {
+        // TODO: test Cat
+    }
+
+    /**
+     * Test the property 'className'
+     */
+    @Test
+    void classNameTest() {
+        // TODO: test className
+    }
+
+    /**
+     * Test the property 'color'
+     */
+    @Test
+    void colorTest() {
+        // TODO: test color
+    }
+
+    /**
+     * Test the property 'declawed'
+     */
+    @Test
+    void declawedTest() {
+        // TODO: test declawed
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ChildWithNullableTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ChildWithNullableTest.java
new file mode 100644
index 00000000000..52ee57ee763
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ChildWithNullableTest.java
@@ -0,0 +1,59 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.openapitools.client.model.ParentWithNullable;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ChildWithNullable
+ */
+class ChildWithNullableTest {
+    private final ChildWithNullable model = new ChildWithNullable();
+
+    /**
+     * Model tests for ChildWithNullable
+     */
+    @Test
+    void testChildWithNullable() {
+        // TODO: test ChildWithNullable
+    }
+
+    /**
+     * Test the property 'type'
+     */
+    @Test
+    void typeTest() {
+        // TODO: test type
+    }
+
+    /**
+     * Test the property 'nullableProperty'
+     */
+    @Test
+    void nullablePropertyTest() {
+        // TODO: test nullableProperty
+    }
+
+    /**
+     * Test the property 'otherProperty'
+     */
+    @Test
+    void otherPropertyTest() {
+        // TODO: test otherProperty
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ClassModelTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ClassModelTest.java
new file mode 100644
index 00000000000..2b5a94e3abd
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ClassModelTest.java
@@ -0,0 +1,42 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ClassModel
+ */
+class ClassModelTest {
+    private final ClassModel model = new ClassModel();
+
+    /**
+     * Model tests for ClassModel
+     */
+    @Test
+    void testClassModel() {
+        // TODO: test ClassModel
+    }
+
+    /**
+     * Test the property 'propertyClass'
+     */
+    @Test
+    void propertyClassTest() {
+        // TODO: test propertyClass
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ClientTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ClientTest.java
new file mode 100644
index 00000000000..631cd9ec97f
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ClientTest.java
@@ -0,0 +1,42 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for Client
+ */
+class ClientTest {
+    private final Client model = new Client();
+
+    /**
+     * Model tests for Client
+     */
+    @Test
+    void testClient() {
+        // TODO: test Client
+    }
+
+    /**
+     * Test the property 'client'
+     */
+    @Test
+    void clientTest() {
+        // TODO: test client
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/DeprecatedObjectTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/DeprecatedObjectTest.java
new file mode 100644
index 00000000000..f910877f265
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/DeprecatedObjectTest.java
@@ -0,0 +1,42 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for DeprecatedObject
+ */
+class DeprecatedObjectTest {
+    private final DeprecatedObject model = new DeprecatedObject();
+
+    /**
+     * Model tests for DeprecatedObject
+     */
+    @Test
+    void testDeprecatedObject() {
+        // TODO: test DeprecatedObject
+    }
+
+    /**
+     * Test the property 'name'
+     */
+    @Test
+    void nameTest() {
+        // TODO: test name
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/DogTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/DogTest.java
new file mode 100644
index 00000000000..06550b080ea
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/DogTest.java
@@ -0,0 +1,59 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.openapitools.client.model.Animal;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for Dog
+ */
+class DogTest {
+    private final Dog model = new Dog();
+
+    /**
+     * Model tests for Dog
+     */
+    @Test
+    void testDog() {
+        // TODO: test Dog
+    }
+
+    /**
+     * Test the property 'className'
+     */
+    @Test
+    void classNameTest() {
+        // TODO: test className
+    }
+
+    /**
+     * Test the property 'color'
+     */
+    @Test
+    void colorTest() {
+        // TODO: test color
+    }
+
+    /**
+     * Test the property 'breed'
+     */
+    @Test
+    void breedTest() {
+        // TODO: test breed
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/EnumArraysTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/EnumArraysTest.java
new file mode 100644
index 00000000000..5a4482a48e5
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/EnumArraysTest.java
@@ -0,0 +1,53 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for EnumArrays
+ */
+class EnumArraysTest {
+    private final EnumArrays model = new EnumArrays();
+
+    /**
+     * Model tests for EnumArrays
+     */
+    @Test
+    void testEnumArrays() {
+        // TODO: test EnumArrays
+    }
+
+    /**
+     * Test the property 'justSymbol'
+     */
+    @Test
+    void justSymbolTest() {
+        // TODO: test justSymbol
+    }
+
+    /**
+     * Test the property 'arrayEnum'
+     */
+    @Test
+    void arrayEnumTest() {
+        // TODO: test arrayEnum
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/EnumClassTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/EnumClassTest.java
new file mode 100644
index 00000000000..1b428fce8da
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/EnumClassTest.java
@@ -0,0 +1,32 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for EnumClass
+ */
+class EnumClassTest {
+    /**
+     * Model tests for EnumClass
+     */
+    @Test
+    void testEnumClass() {
+        // TODO: test EnumClass
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/EnumTestTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/EnumTestTest.java
new file mode 100644
index 00000000000..e88f4913fac
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/EnumTestTest.java
@@ -0,0 +1,102 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.openapitools.client.model.OuterEnum;
+import org.openapitools.client.model.OuterEnumDefaultValue;
+import org.openapitools.client.model.OuterEnumInteger;
+import org.openapitools.client.model.OuterEnumIntegerDefaultValue;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for EnumTest
+ */
+class EnumTestTest {
+    private final EnumTest model = new EnumTest();
+
+    /**
+     * Model tests for EnumTest
+     */
+    @Test
+    void testEnumTest() {
+        // TODO: test EnumTest
+    }
+
+    /**
+     * Test the property 'enumString'
+     */
+    @Test
+    void enumStringTest() {
+        // TODO: test enumString
+    }
+
+    /**
+     * Test the property 'enumStringRequired'
+     */
+    @Test
+    void enumStringRequiredTest() {
+        // TODO: test enumStringRequired
+    }
+
+    /**
+     * Test the property 'enumInteger'
+     */
+    @Test
+    void enumIntegerTest() {
+        // TODO: test enumInteger
+    }
+
+    /**
+     * Test the property 'enumNumber'
+     */
+    @Test
+    void enumNumberTest() {
+        // TODO: test enumNumber
+    }
+
+    /**
+     * Test the property 'outerEnum'
+     */
+    @Test
+    void outerEnumTest() {
+        // TODO: test outerEnum
+    }
+
+    /**
+     * Test the property 'outerEnumInteger'
+     */
+    @Test
+    void outerEnumIntegerTest() {
+        // TODO: test outerEnumInteger
+    }
+
+    /**
+     * Test the property 'outerEnumDefaultValue'
+     */
+    @Test
+    void outerEnumDefaultValueTest() {
+        // TODO: test outerEnumDefaultValue
+    }
+
+    /**
+     * Test the property 'outerEnumIntegerDefaultValue'
+     */
+    @Test
+    void outerEnumIntegerDefaultValueTest() {
+        // TODO: test outerEnumIntegerDefaultValue
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/FakeBigDecimalMap200ResponseTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/FakeBigDecimalMap200ResponseTest.java
new file mode 100644
index 00000000000..bf85a56f9cb
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/FakeBigDecimalMap200ResponseTest.java
@@ -0,0 +1,53 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.math.BigDecimal;
+import java.util.HashMap;
+import java.util.Map;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for FakeBigDecimalMap200Response
+ */
+class FakeBigDecimalMap200ResponseTest {
+    private final FakeBigDecimalMap200Response model = new FakeBigDecimalMap200Response();
+
+    /**
+     * Model tests for FakeBigDecimalMap200Response
+     */
+    @Test
+    void testFakeBigDecimalMap200Response() {
+        // TODO: test FakeBigDecimalMap200Response
+    }
+
+    /**
+     * Test the property 'someId'
+     */
+    @Test
+    void someIdTest() {
+        // TODO: test someId
+    }
+
+    /**
+     * Test the property 'someMap'
+     */
+    @Test
+    void someMapTest() {
+        // TODO: test someMap
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/FileSchemaTestClassTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/FileSchemaTestClassTest.java
new file mode 100644
index 00000000000..574f81629d2
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/FileSchemaTestClassTest.java
@@ -0,0 +1,54 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.openapitools.client.model.ModelFile;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for FileSchemaTestClass
+ */
+class FileSchemaTestClassTest {
+    private final FileSchemaTestClass model = new FileSchemaTestClass();
+
+    /**
+     * Model tests for FileSchemaTestClass
+     */
+    @Test
+    void testFileSchemaTestClass() {
+        // TODO: test FileSchemaTestClass
+    }
+
+    /**
+     * Test the property '_file'
+     */
+    @Test
+    void _fileTest() {
+        // TODO: test _file
+    }
+
+    /**
+     * Test the property 'files'
+     */
+    @Test
+    void filesTest() {
+        // TODO: test files
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/FooGetDefaultResponseTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/FooGetDefaultResponseTest.java
new file mode 100644
index 00000000000..db0cbf8b71d
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/FooGetDefaultResponseTest.java
@@ -0,0 +1,43 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.openapitools.client.model.Foo;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for FooGetDefaultResponse
+ */
+class FooGetDefaultResponseTest {
+    private final FooGetDefaultResponse model = new FooGetDefaultResponse();
+
+    /**
+     * Model tests for FooGetDefaultResponse
+     */
+    @Test
+    void testFooGetDefaultResponse() {
+        // TODO: test FooGetDefaultResponse
+    }
+
+    /**
+     * Test the property 'string'
+     */
+    @Test
+    void stringTest() {
+        // TODO: test string
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/FooTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/FooTest.java
new file mode 100644
index 00000000000..85be29d4485
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/FooTest.java
@@ -0,0 +1,42 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for Foo
+ */
+class FooTest {
+    private final Foo model = new Foo();
+
+    /**
+     * Model tests for Foo
+     */
+    @Test
+    void testFoo() {
+        // TODO: test Foo
+    }
+
+    /**
+     * Test the property 'bar'
+     */
+    @Test
+    void barTest() {
+        // TODO: test bar
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/FormatTestTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/FormatTestTest.java
new file mode 100644
index 00000000000..73dab4e2d94
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/FormatTestTest.java
@@ -0,0 +1,166 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.io.File;
+import java.math.BigDecimal;
+import java.util.Date;
+import java.util.UUID;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for FormatTest
+ */
+class FormatTestTest {
+    private final FormatTest model = new FormatTest();
+
+    /**
+     * Model tests for FormatTest
+     */
+    @Test
+    void testFormatTest() {
+        // TODO: test FormatTest
+    }
+
+    /**
+     * Test the property 'integer'
+     */
+    @Test
+    void integerTest() {
+        // TODO: test integer
+    }
+
+    /**
+     * Test the property 'int32'
+     */
+    @Test
+    void int32Test() {
+        // TODO: test int32
+    }
+
+    /**
+     * Test the property 'int64'
+     */
+    @Test
+    void int64Test() {
+        // TODO: test int64
+    }
+
+    /**
+     * Test the property 'number'
+     */
+    @Test
+    void numberTest() {
+        // TODO: test number
+    }
+
+    /**
+     * Test the property '_float'
+     */
+    @Test
+    void _floatTest() {
+        // TODO: test _float
+    }
+
+    /**
+     * Test the property '_double'
+     */
+    @Test
+    void _doubleTest() {
+        // TODO: test _double
+    }
+
+    /**
+     * Test the property 'decimal'
+     */
+    @Test
+    void decimalTest() {
+        // TODO: test decimal
+    }
+
+    /**
+     * Test the property 'string'
+     */
+    @Test
+    void stringTest() {
+        // TODO: test string
+    }
+
+    /**
+     * Test the property '_byte'
+     */
+    @Test
+    void _byteTest() {
+        // TODO: test _byte
+    }
+
+    /**
+     * Test the property 'binary'
+     */
+    @Test
+    void binaryTest() {
+        // TODO: test binary
+    }
+
+    /**
+     * Test the property 'date'
+     */
+    @Test
+    void dateTest() {
+        // TODO: test date
+    }
+
+    /**
+     * Test the property 'dateTime'
+     */
+    @Test
+    void dateTimeTest() {
+        // TODO: test dateTime
+    }
+
+    /**
+     * Test the property 'uuid'
+     */
+    @Test
+    void uuidTest() {
+        // TODO: test uuid
+    }
+
+    /**
+     * Test the property 'password'
+     */
+    @Test
+    void passwordTest() {
+        // TODO: test password
+    }
+
+    /**
+     * Test the property 'patternWithDigits'
+     */
+    @Test
+    void patternWithDigitsTest() {
+        // TODO: test patternWithDigits
+    }
+
+    /**
+     * Test the property 'patternWithDigitsAndDelimiter'
+     */
+    @Test
+    void patternWithDigitsAndDelimiterTest() {
+        // TODO: test patternWithDigitsAndDelimiter
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/HasOnlyReadOnlyTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/HasOnlyReadOnlyTest.java
new file mode 100644
index 00000000000..905c931aab5
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/HasOnlyReadOnlyTest.java
@@ -0,0 +1,50 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for HasOnlyReadOnly
+ */
+class HasOnlyReadOnlyTest {
+    private final HasOnlyReadOnly model = new HasOnlyReadOnly();
+
+    /**
+     * Model tests for HasOnlyReadOnly
+     */
+    @Test
+    void testHasOnlyReadOnly() {
+        // TODO: test HasOnlyReadOnly
+    }
+
+    /**
+     * Test the property 'bar'
+     */
+    @Test
+    void barTest() {
+        // TODO: test bar
+    }
+
+    /**
+     * Test the property 'foo'
+     */
+    @Test
+    void fooTest() {
+        // TODO: test foo
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/HealthCheckResultTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/HealthCheckResultTest.java
new file mode 100644
index 00000000000..6d612952120
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/HealthCheckResultTest.java
@@ -0,0 +1,42 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for HealthCheckResult
+ */
+class HealthCheckResultTest {
+    private final HealthCheckResult model = new HealthCheckResult();
+
+    /**
+     * Model tests for HealthCheckResult
+     */
+    @Test
+    void testHealthCheckResult() {
+        // TODO: test HealthCheckResult
+    }
+
+    /**
+     * Test the property 'nullableMessage'
+     */
+    @Test
+    void nullableMessageTest() {
+        // TODO: test nullableMessage
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/MapTestTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/MapTestTest.java
new file mode 100644
index 00000000000..c1bc74afd09
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/MapTestTest.java
@@ -0,0 +1,68 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.HashMap;
+import java.util.Map;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for MapTest
+ */
+class MapTestTest {
+    private final MapTest model = new MapTest();
+
+    /**
+     * Model tests for MapTest
+     */
+    @Test
+    void testMapTest() {
+        // TODO: test MapTest
+    }
+
+    /**
+     * Test the property 'mapMapOfString'
+     */
+    @Test
+    void mapMapOfStringTest() {
+        // TODO: test mapMapOfString
+    }
+
+    /**
+     * Test the property 'mapOfEnumString'
+     */
+    @Test
+    void mapOfEnumStringTest() {
+        // TODO: test mapOfEnumString
+    }
+
+    /**
+     * Test the property 'directMap'
+     */
+    @Test
+    void directMapTest() {
+        // TODO: test directMap
+    }
+
+    /**
+     * Test the property 'indirectMap'
+     */
+    @Test
+    void indirectMapTest() {
+        // TODO: test indirectMap
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClassTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClassTest.java
new file mode 100644
index 00000000000..0aab1ece1a9
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClassTest.java
@@ -0,0 +1,63 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.UUID;
+import org.openapitools.client.model.Animal;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for MixedPropertiesAndAdditionalPropertiesClass
+ */
+class MixedPropertiesAndAdditionalPropertiesClassTest {
+    private final MixedPropertiesAndAdditionalPropertiesClass model = new MixedPropertiesAndAdditionalPropertiesClass();
+
+    /**
+     * Model tests for MixedPropertiesAndAdditionalPropertiesClass
+     */
+    @Test
+    void testMixedPropertiesAndAdditionalPropertiesClass() {
+        // TODO: test MixedPropertiesAndAdditionalPropertiesClass
+    }
+
+    /**
+     * Test the property 'uuid'
+     */
+    @Test
+    void uuidTest() {
+        // TODO: test uuid
+    }
+
+    /**
+     * Test the property 'dateTime'
+     */
+    @Test
+    void dateTimeTest() {
+        // TODO: test dateTime
+    }
+
+    /**
+     * Test the property 'map'
+     */
+    @Test
+    void mapTest() {
+        // TODO: test map
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/Model200ResponseTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/Model200ResponseTest.java
new file mode 100644
index 00000000000..9a31cadf720
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/Model200ResponseTest.java
@@ -0,0 +1,50 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for Model200Response
+ */
+class Model200ResponseTest {
+    private final Model200Response model = new Model200Response();
+
+    /**
+     * Model tests for Model200Response
+     */
+    @Test
+    void testModel200Response() {
+        // TODO: test Model200Response
+    }
+
+    /**
+     * Test the property 'name'
+     */
+    @Test
+    void nameTest() {
+        // TODO: test name
+    }
+
+    /**
+     * Test the property 'propertyClass'
+     */
+    @Test
+    void propertyClassTest() {
+        // TODO: test propertyClass
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ModelFileTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ModelFileTest.java
new file mode 100644
index 00000000000..88a8d0d8f90
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ModelFileTest.java
@@ -0,0 +1,42 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ModelFile
+ */
+class ModelFileTest {
+    private final ModelFile model = new ModelFile();
+
+    /**
+     * Model tests for ModelFile
+     */
+    @Test
+    void testModelFile() {
+        // TODO: test ModelFile
+    }
+
+    /**
+     * Test the property 'sourceURI'
+     */
+    @Test
+    void sourceURITest() {
+        // TODO: test sourceURI
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ModelListTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ModelListTest.java
new file mode 100644
index 00000000000..15f4af11ddb
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ModelListTest.java
@@ -0,0 +1,42 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ModelList
+ */
+class ModelListTest {
+    private final ModelList model = new ModelList();
+
+    /**
+     * Model tests for ModelList
+     */
+    @Test
+    void testModelList() {
+        // TODO: test ModelList
+    }
+
+    /**
+     * Test the property '_123list'
+     */
+    @Test
+    void _123listTest() {
+        // TODO: test _123list
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ModelReturnTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ModelReturnTest.java
new file mode 100644
index 00000000000..40aa9479d1b
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ModelReturnTest.java
@@ -0,0 +1,42 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ModelReturn
+ */
+class ModelReturnTest {
+    private final ModelReturn model = new ModelReturn();
+
+    /**
+     * Model tests for ModelReturn
+     */
+    @Test
+    void testModelReturn() {
+        // TODO: test ModelReturn
+    }
+
+    /**
+     * Test the property '_return'
+     */
+    @Test
+    void _returnTest() {
+        // TODO: test _return
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/NameTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/NameTest.java
new file mode 100644
index 00000000000..fbe1d4d6c03
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/NameTest.java
@@ -0,0 +1,66 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for Name
+ */
+class NameTest {
+    private final Name model = new Name();
+
+    /**
+     * Model tests for Name
+     */
+    @Test
+    void testName() {
+        // TODO: test Name
+    }
+
+    /**
+     * Test the property 'name'
+     */
+    @Test
+    void nameTest() {
+        // TODO: test name
+    }
+
+    /**
+     * Test the property 'snakeCase'
+     */
+    @Test
+    void snakeCaseTest() {
+        // TODO: test snakeCase
+    }
+
+    /**
+     * Test the property 'property'
+     */
+    @Test
+    void propertyTest() {
+        // TODO: test property
+    }
+
+    /**
+     * Test the property '_123number'
+     */
+    @Test
+    void _123numberTest() {
+        // TODO: test _123number
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/NullableClassTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/NullableClassTest.java
new file mode 100644
index 00000000000..2dc4edf27b4
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/NullableClassTest.java
@@ -0,0 +1,137 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for NullableClass
+ */
+class NullableClassTest {
+    private final NullableClass model = new NullableClass();
+
+    /**
+     * Model tests for NullableClass
+     */
+    @Test
+    void testNullableClass() {
+        // TODO: test NullableClass
+    }
+
+    /**
+     * Test the property 'integerProp'
+     */
+    @Test
+    void integerPropTest() {
+        // TODO: test integerProp
+    }
+
+    /**
+     * Test the property 'numberProp'
+     */
+    @Test
+    void numberPropTest() {
+        // TODO: test numberProp
+    }
+
+    /**
+     * Test the property 'booleanProp'
+     */
+    @Test
+    void booleanPropTest() {
+        // TODO: test booleanProp
+    }
+
+    /**
+     * Test the property 'stringProp'
+     */
+    @Test
+    void stringPropTest() {
+        // TODO: test stringProp
+    }
+
+    /**
+     * Test the property 'dateProp'
+     */
+    @Test
+    void datePropTest() {
+        // TODO: test dateProp
+    }
+
+    /**
+     * Test the property 'datetimeProp'
+     */
+    @Test
+    void datetimePropTest() {
+        // TODO: test datetimeProp
+    }
+
+    /**
+     * Test the property 'arrayNullableProp'
+     */
+    @Test
+    void arrayNullablePropTest() {
+        // TODO: test arrayNullableProp
+    }
+
+    /**
+     * Test the property 'arrayAndItemsNullableProp'
+     */
+    @Test
+    void arrayAndItemsNullablePropTest() {
+        // TODO: test arrayAndItemsNullableProp
+    }
+
+    /**
+     * Test the property 'arrayItemsNullable'
+     */
+    @Test
+    void arrayItemsNullableTest() {
+        // TODO: test arrayItemsNullable
+    }
+
+    /**
+     * Test the property 'objectNullableProp'
+     */
+    @Test
+    void objectNullablePropTest() {
+        // TODO: test objectNullableProp
+    }
+
+    /**
+     * Test the property 'objectAndItemsNullableProp'
+     */
+    @Test
+    void objectAndItemsNullablePropTest() {
+        // TODO: test objectAndItemsNullableProp
+    }
+
+    /**
+     * Test the property 'objectItemsNullable'
+     */
+    @Test
+    void objectItemsNullableTest() {
+        // TODO: test objectItemsNullable
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/NumberOnlyTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/NumberOnlyTest.java
new file mode 100644
index 00000000000..399dec94c67
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/NumberOnlyTest.java
@@ -0,0 +1,43 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.math.BigDecimal;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for NumberOnly
+ */
+class NumberOnlyTest {
+    private final NumberOnly model = new NumberOnly();
+
+    /**
+     * Model tests for NumberOnly
+     */
+    @Test
+    void testNumberOnly() {
+        // TODO: test NumberOnly
+    }
+
+    /**
+     * Test the property 'justNumber'
+     */
+    @Test
+    void justNumberTest() {
+        // TODO: test justNumber
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ObjectWithDeprecatedFieldsTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ObjectWithDeprecatedFieldsTest.java
new file mode 100644
index 00000000000..360689566a2
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ObjectWithDeprecatedFieldsTest.java
@@ -0,0 +1,71 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import org.openapitools.client.model.DeprecatedObject;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ObjectWithDeprecatedFields
+ */
+class ObjectWithDeprecatedFieldsTest {
+    private final ObjectWithDeprecatedFields model = new ObjectWithDeprecatedFields();
+
+    /**
+     * Model tests for ObjectWithDeprecatedFields
+     */
+    @Test
+    void testObjectWithDeprecatedFields() {
+        // TODO: test ObjectWithDeprecatedFields
+    }
+
+    /**
+     * Test the property 'uuid'
+     */
+    @Test
+    void uuidTest() {
+        // TODO: test uuid
+    }
+
+    /**
+     * Test the property 'id'
+     */
+    @Test
+    void idTest() {
+        // TODO: test id
+    }
+
+    /**
+     * Test the property 'deprecatedRef'
+     */
+    @Test
+    void deprecatedRefTest() {
+        // TODO: test deprecatedRef
+    }
+
+    /**
+     * Test the property 'bars'
+     */
+    @Test
+    void barsTest() {
+        // TODO: test bars
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/OuterCompositeTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/OuterCompositeTest.java
new file mode 100644
index 00000000000..7a906cb31cd
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/OuterCompositeTest.java
@@ -0,0 +1,59 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.math.BigDecimal;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for OuterComposite
+ */
+class OuterCompositeTest {
+    private final OuterComposite model = new OuterComposite();
+
+    /**
+     * Model tests for OuterComposite
+     */
+    @Test
+    void testOuterComposite() {
+        // TODO: test OuterComposite
+    }
+
+    /**
+     * Test the property 'myNumber'
+     */
+    @Test
+    void myNumberTest() {
+        // TODO: test myNumber
+    }
+
+    /**
+     * Test the property 'myString'
+     */
+    @Test
+    void myStringTest() {
+        // TODO: test myString
+    }
+
+    /**
+     * Test the property 'myBoolean'
+     */
+    @Test
+    void myBooleanTest() {
+        // TODO: test myBoolean
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/OuterEnumDefaultValueTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/OuterEnumDefaultValueTest.java
new file mode 100644
index 00000000000..e492f3e0ff6
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/OuterEnumDefaultValueTest.java
@@ -0,0 +1,32 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for OuterEnumDefaultValue
+ */
+class OuterEnumDefaultValueTest {
+    /**
+     * Model tests for OuterEnumDefaultValue
+     */
+    @Test
+    void testOuterEnumDefaultValue() {
+        // TODO: test OuterEnumDefaultValue
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/OuterEnumIntegerDefaultValueTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/OuterEnumIntegerDefaultValueTest.java
new file mode 100644
index 00000000000..d72626405cc
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/OuterEnumIntegerDefaultValueTest.java
@@ -0,0 +1,32 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for OuterEnumIntegerDefaultValue
+ */
+class OuterEnumIntegerDefaultValueTest {
+    /**
+     * Model tests for OuterEnumIntegerDefaultValue
+     */
+    @Test
+    void testOuterEnumIntegerDefaultValue() {
+        // TODO: test OuterEnumIntegerDefaultValue
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/OuterEnumIntegerTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/OuterEnumIntegerTest.java
new file mode 100644
index 00000000000..b7dd55cda62
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/OuterEnumIntegerTest.java
@@ -0,0 +1,32 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for OuterEnumInteger
+ */
+class OuterEnumIntegerTest {
+    /**
+     * Model tests for OuterEnumInteger
+     */
+    @Test
+    void testOuterEnumInteger() {
+        // TODO: test OuterEnumInteger
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/OuterEnumTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/OuterEnumTest.java
new file mode 100644
index 00000000000..1116901010b
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/OuterEnumTest.java
@@ -0,0 +1,32 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for OuterEnum
+ */
+class OuterEnumTest {
+    /**
+     * Model tests for OuterEnum
+     */
+    @Test
+    void testOuterEnum() {
+        // TODO: test OuterEnum
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/OuterObjectWithEnumPropertyTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/OuterObjectWithEnumPropertyTest.java
new file mode 100644
index 00000000000..f773156fb5e
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/OuterObjectWithEnumPropertyTest.java
@@ -0,0 +1,43 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.openapitools.client.model.OuterEnumInteger;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for OuterObjectWithEnumProperty
+ */
+class OuterObjectWithEnumPropertyTest {
+    private final OuterObjectWithEnumProperty model = new OuterObjectWithEnumProperty();
+
+    /**
+     * Model tests for OuterObjectWithEnumProperty
+     */
+    @Test
+    void testOuterObjectWithEnumProperty() {
+        // TODO: test OuterObjectWithEnumProperty
+    }
+
+    /**
+     * Test the property 'value'
+     */
+    @Test
+    void valueTest() {
+        // TODO: test value
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ParentWithNullableTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ParentWithNullableTest.java
new file mode 100644
index 00000000000..e2a5a37b6cb
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ParentWithNullableTest.java
@@ -0,0 +1,50 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ParentWithNullable
+ */
+class ParentWithNullableTest {
+    private final ParentWithNullable model = new ParentWithNullable();
+
+    /**
+     * Model tests for ParentWithNullable
+     */
+    @Test
+    void testParentWithNullable() {
+        // TODO: test ParentWithNullable
+    }
+
+    /**
+     * Test the property 'type'
+     */
+    @Test
+    void typeTest() {
+        // TODO: test type
+    }
+
+    /**
+     * Test the property 'nullableProperty'
+     */
+    @Test
+    void nullablePropertyTest() {
+        // TODO: test nullableProperty
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ReadOnlyFirstTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ReadOnlyFirstTest.java
new file mode 100644
index 00000000000..b3205f14720
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/ReadOnlyFirstTest.java
@@ -0,0 +1,50 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for ReadOnlyFirst
+ */
+class ReadOnlyFirstTest {
+    private final ReadOnlyFirst model = new ReadOnlyFirst();
+
+    /**
+     * Model tests for ReadOnlyFirst
+     */
+    @Test
+    void testReadOnlyFirst() {
+        // TODO: test ReadOnlyFirst
+    }
+
+    /**
+     * Test the property 'bar'
+     */
+    @Test
+    void barTest() {
+        // TODO: test bar
+    }
+
+    /**
+     * Test the property 'baz'
+     */
+    @Test
+    void bazTest() {
+        // TODO: test baz
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/SingleRefTypeTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/SingleRefTypeTest.java
new file mode 100644
index 00000000000..210c2a45037
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/SingleRefTypeTest.java
@@ -0,0 +1,32 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for SingleRefType
+ */
+class SingleRefTypeTest {
+    /**
+     * Model tests for SingleRefType
+     */
+    @Test
+    void testSingleRefType() {
+        // TODO: test SingleRefType
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/SpecialModelNameTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/SpecialModelNameTest.java
new file mode 100644
index 00000000000..07c9acddd15
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/SpecialModelNameTest.java
@@ -0,0 +1,42 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for SpecialModelName
+ */
+class SpecialModelNameTest {
+    private final SpecialModelName model = new SpecialModelName();
+
+    /**
+     * Model tests for SpecialModelName
+     */
+    @Test
+    void testSpecialModelName() {
+        // TODO: test SpecialModelName
+    }
+
+    /**
+     * Test the property '$specialPropertyName'
+     */
+    @Test
+    void $specialPropertyNameTest() {
+        // TODO: test $specialPropertyName
+    }
+
+}
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/TestInlineFreeformAdditionalPropertiesRequestTest.java b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/TestInlineFreeformAdditionalPropertiesRequestTest.java
new file mode 100644
index 00000000000..011ed8b26d4
--- /dev/null
+++ b/samples/client/petstore/java/microprofile-rest-client/src/test/java/org/openapitools/client/model/TestInlineFreeformAdditionalPropertiesRequestTest.java
@@ -0,0 +1,44 @@
+/**
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.HashMap;
+import java.util.Map;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Model tests for TestInlineFreeformAdditionalPropertiesRequest
+ */
+class TestInlineFreeformAdditionalPropertiesRequestTest {
+    private final TestInlineFreeformAdditionalPropertiesRequest model = new TestInlineFreeformAdditionalPropertiesRequest();
+
+    /**
+     * Model tests for TestInlineFreeformAdditionalPropertiesRequest
+     */
+    @Test
+    void testTestInlineFreeformAdditionalPropertiesRequest() {
+        // TODO: test TestInlineFreeformAdditionalPropertiesRequest
+    }
+
+    /**
+     * Test the property 'someProperty'
+     */
+    @Test
+    void somePropertyTest() {
+        // TODO: test someProperty
+    }
+
+}