Refactor default and example values in Java generators (#1045)

* fix default, example for java okhttp * update java feign samples * update samples, doc * add new doc for dart-jaguar * update model template * update jaxrs spec model * update resteasy sample * update java samples
2025-12-19 07:27:06 +00:00 · 2018-10-07 03:56:16 +08:00
parent a1d242595e
commit 999f472e4b
1233 changed files with 4917 additions and 4909 deletions
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/api/FakeApi.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/api/FakeApi.java
@@ -899,16 +899,16 @@ public class FakeApi {
     * @param _double None (required)
     * @param patternWithoutDelimiter None (required)
     * @param _byte None (required)
-     * @param integer None (optional, default to null)
-     * @param int32 None (optional, default to null)
-     * @param int64 None (optional, default to null)
-     * @param _float None (optional, default to null)
-     * @param string None (optional, default to null)
-     * @param binary None (optional, default to null)
-     * @param date None (optional, default to null)
-     * @param dateTime None (optional, default to null)
-     * @param password None (optional, default to null)
-     * @param paramCallback None (optional, default to null)
+     * @param integer None (optional)
+     * @param int32 None (optional)
+     * @param int64 None (optional)
+     * @param _float None (optional)
+     * @param string None (optional)
+     * @param binary None (optional)
+     * @param date None (optional)
+     * @param dateTime None (optional)
+     * @param password None (optional)
+     * @param paramCallback None (optional)
     * @param progressListener Progress listener
     * @param progressRequestListener Progress request listener
     * @return Call to execute
@@ -1046,16 +1046,16 @@ public class FakeApi {
     * @param _double None (required)
     * @param patternWithoutDelimiter None (required)
     * @param _byte None (required)
-     * @param integer None (optional, default to null)
-     * @param int32 None (optional, default to null)
-     * @param int64 None (optional, default to null)
-     * @param _float None (optional, default to null)
-     * @param string None (optional, default to null)
-     * @param binary None (optional, default to null)
-     * @param date None (optional, default to null)
-     * @param dateTime None (optional, default to null)
-     * @param password None (optional, default to null)
-     * @param paramCallback None (optional, default to null)
+     * @param integer None (optional)
+     * @param int32 None (optional)
+     * @param int64 None (optional)
+     * @param _float None (optional)
+     * @param string None (optional)
+     * @param binary None (optional)
+     * @param date None (optional)
+     * @param dateTime None (optional)
+     * @param password None (optional)
+     * @param paramCallback None (optional)
     * @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body
     */
    public void testEndpointParameters(BigDecimal number, Double _double, String patternWithoutDelimiter, byte[] _byte, Integer integer, Integer int32, Long int64, Float _float, String string, File binary, LocalDate date, OffsetDateTime dateTime, String password, String paramCallback) throws ApiException {
@@ -1069,16 +1069,16 @@ public class FakeApi {
     * @param _double None (required)
     * @param patternWithoutDelimiter None (required)
     * @param _byte None (required)
-     * @param integer None (optional, default to null)
-     * @param int32 None (optional, default to null)
-     * @param int64 None (optional, default to null)
-     * @param _float None (optional, default to null)
-     * @param string None (optional, default to null)
-     * @param binary None (optional, default to null)
-     * @param date None (optional, default to null)
-     * @param dateTime None (optional, default to null)
-     * @param password None (optional, default to null)
-     * @param paramCallback None (optional, default to null)
+     * @param integer None (optional)
+     * @param int32 None (optional)
+     * @param int64 None (optional)
+     * @param _float None (optional)
+     * @param string None (optional)
+     * @param binary None (optional)
+     * @param date None (optional)
+     * @param dateTime None (optional)
+     * @param password None (optional)
+     * @param paramCallback None (optional)
     * @return ApiResponse&lt;Void&gt;
     * @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body
     */
@@ -1094,16 +1094,16 @@ public class FakeApi {
     * @param _double None (required)
     * @param patternWithoutDelimiter None (required)
     * @param _byte None (required)
-     * @param integer None (optional, default to null)
-     * @param int32 None (optional, default to null)
-     * @param int64 None (optional, default to null)
-     * @param _float None (optional, default to null)
-     * @param string None (optional, default to null)
-     * @param binary None (optional, default to null)
-     * @param date None (optional, default to null)
-     * @param dateTime None (optional, default to null)
-     * @param password None (optional, default to null)
-     * @param paramCallback None (optional, default to null)
+     * @param integer None (optional)
+     * @param int32 None (optional)
+     * @param int64 None (optional)
+     * @param _float None (optional)
+     * @param string None (optional)
+     * @param binary None (optional)
+     * @param date None (optional)
+     * @param dateTime None (optional)
+     * @param password None (optional)
+     * @param paramCallback None (optional)
     * @param callback The callback to be executed when the API call finishes
     * @return The request call
     * @throws ApiException If fail to process the API call, e.g. serializing the request body object
@@ -1141,7 +1141,7 @@ public class FakeApi {
     * @param enumQueryString Query parameter enum test (string) (optional, default to -efg)
     * @param enumQueryInteger Query parameter enum test (double) (optional)
     * @param enumQueryDouble Query parameter enum test (double) (optional)
-     * @param enumFormStringArray Form parameter enum test (string array) (optional, default to $)
+     * @param enumFormStringArray Form parameter enum test (string array) (optional)
     * @param enumFormString Form parameter enum test (string) (optional, default to -efg)
     * @param progressListener Progress listener
     * @param progressRequestListener Progress request listener
@@ -1238,7 +1238,7 @@ public class FakeApi {
     * @param enumQueryString Query parameter enum test (string) (optional, default to -efg)
     * @param enumQueryInteger Query parameter enum test (double) (optional)
     * @param enumQueryDouble Query parameter enum test (double) (optional)
-     * @param enumFormStringArray Form parameter enum test (string array) (optional, default to $)
+     * @param enumFormStringArray Form parameter enum test (string array) (optional)
     * @param enumFormString Form parameter enum test (string) (optional, default to -efg)
     * @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body
     */
@@ -1255,7 +1255,7 @@ public class FakeApi {
     * @param enumQueryString Query parameter enum test (string) (optional, default to -efg)
     * @param enumQueryInteger Query parameter enum test (double) (optional)
     * @param enumQueryDouble Query parameter enum test (double) (optional)
-     * @param enumFormStringArray Form parameter enum test (string array) (optional, default to $)
+     * @param enumFormStringArray Form parameter enum test (string array) (optional)
     * @param enumFormString Form parameter enum test (string) (optional, default to -efg)
     * @return ApiResponse&lt;Void&gt;
     * @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body
@@ -1274,7 +1274,7 @@ public class FakeApi {
     * @param enumQueryString Query parameter enum test (string) (optional, default to -efg)
     * @param enumQueryInteger Query parameter enum test (double) (optional)
     * @param enumQueryDouble Query parameter enum test (double) (optional)
-     * @param enumFormStringArray Form parameter enum test (string array) (optional, default to $)
+     * @param enumFormStringArray Form parameter enum test (string array) (optional)
     * @param enumFormString Form parameter enum test (string) (optional, default to -efg)
     * @param callback The callback to be executed when the API call finishes
     * @return The request call
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/api/PetApi.java
@@ -800,8 +800,8 @@ public class PetApi {
    /**
     * Build call for updatePetWithForm
     * @param petId ID of pet that needs to be updated (required)
-     * @param name Updated name of the pet (optional, default to null)
-     * @param status Updated status of the pet (optional, default to null)
+     * @param name Updated name of the pet (optional)
+     * @param status Updated status of the pet (optional)
     * @param progressListener Progress listener
     * @param progressRequestListener Progress request listener
     * @return Call to execute
@@ -874,8 +874,8 @@ public class PetApi {
     * Updates a pet in the store with form data
     * 
     * @param petId ID of pet that needs to be updated (required)
-     * @param name Updated name of the pet (optional, default to null)
-     * @param status Updated status of the pet (optional, default to null)
+     * @param name Updated name of the pet (optional)
+     * @param status Updated status of the pet (optional)
     * @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body
     */
    public void updatePetWithForm(Long petId, String name, String status) throws ApiException {
@@ -886,8 +886,8 @@ public class PetApi {
     * Updates a pet in the store with form data
     * 
     * @param petId ID of pet that needs to be updated (required)
-     * @param name Updated name of the pet (optional, default to null)
-     * @param status Updated status of the pet (optional, default to null)
+     * @param name Updated name of the pet (optional)
+     * @param status Updated status of the pet (optional)
     * @return ApiResponse&lt;Void&gt;
     * @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body
     */
@@ -900,8 +900,8 @@ public class PetApi {
     * Updates a pet in the store with form data (asynchronously)
     * 
     * @param petId ID of pet that needs to be updated (required)
-     * @param name Updated name of the pet (optional, default to null)
-     * @param status Updated status of the pet (optional, default to null)
+     * @param name Updated name of the pet (optional)
+     * @param status Updated status of the pet (optional)
     * @param callback The callback to be executed when the API call finishes
     * @return The request call
     * @throws ApiException If fail to process the API call, e.g. serializing the request body object
@@ -934,8 +934,8 @@ public class PetApi {
    /**
     * Build call for uploadFile
     * @param petId ID of pet to update (required)
-     * @param additionalMetadata Additional data to pass to server (optional, default to null)
-     * @param file file to upload (optional, default to null)
+     * @param additionalMetadata Additional data to pass to server (optional)
+     * @param file file to upload (optional)
     * @param progressListener Progress listener
     * @param progressRequestListener Progress request listener
     * @return Call to execute
@@ -1008,8 +1008,8 @@ public class PetApi {
     * uploads an image
     * 
     * @param petId ID of pet to update (required)
-     * @param additionalMetadata Additional data to pass to server (optional, default to null)
-     * @param file file to upload (optional, default to null)
+     * @param additionalMetadata Additional data to pass to server (optional)
+     * @param file file to upload (optional)
     * @return ModelApiResponse
     * @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body
     */
@@ -1022,8 +1022,8 @@ public class PetApi {
     * uploads an image
     * 
     * @param petId ID of pet to update (required)
-     * @param additionalMetadata Additional data to pass to server (optional, default to null)
-     * @param file file to upload (optional, default to null)
+     * @param additionalMetadata Additional data to pass to server (optional)
+     * @param file file to upload (optional)
     * @return ApiResponse&lt;ModelApiResponse&gt;
     * @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body
     */
@@ -1037,8 +1037,8 @@ public class PetApi {
     * uploads an image (asynchronously)
     * 
     * @param petId ID of pet to update (required)
-     * @param additionalMetadata Additional data to pass to server (optional, default to null)
-     * @param file file to upload (optional, default to null)
+     * @param additionalMetadata Additional data to pass to server (optional)
+     * @param file file to upload (optional)
     * @param callback The callback to be executed when the API call finishes
     * @return The request call
     * @throws ApiException If fail to process the API call, e.g. serializing the request body object
@@ -1073,7 +1073,7 @@ public class PetApi {
     * Build call for uploadFileWithRequiredFile
     * @param petId ID of pet to update (required)
     * @param requiredFile file to upload (required)
-     * @param additionalMetadata Additional data to pass to server (optional, default to null)
+     * @param additionalMetadata Additional data to pass to server (optional)
     * @param progressListener Progress listener
     * @param progressRequestListener Progress request listener
     * @return Call to execute
@@ -1152,7 +1152,7 @@ public class PetApi {
     * 
     * @param petId ID of pet to update (required)
     * @param requiredFile file to upload (required)
-     * @param additionalMetadata Additional data to pass to server (optional, default to null)
+     * @param additionalMetadata Additional data to pass to server (optional)
     * @return ModelApiResponse
     * @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body
     */
@@ -1166,7 +1166,7 @@ public class PetApi {
     * 
     * @param petId ID of pet to update (required)
     * @param requiredFile file to upload (required)
-     * @param additionalMetadata Additional data to pass to server (optional, default to null)
+     * @param additionalMetadata Additional data to pass to server (optional)
     * @return ApiResponse&lt;ModelApiResponse&gt;
     * @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body
     */
@@ -1181,7 +1181,7 @@ public class PetApi {
     * 
     * @param petId ID of pet to update (required)
     * @param requiredFile file to upload (required)
-     * @param additionalMetadata Additional data to pass to server (optional, default to null)
+     * @param additionalMetadata Additional data to pass to server (optional)
     * @param callback The callback to be executed when the API call finishes
     * @return The request call
     * @throws ApiException If fail to process the API call, e.g. serializing the request body object
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/Animal.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/Animal.java
@@ -32,7 +32,7 @@ import java.io.IOException;
 public class Animal {
  public static final String SERIALIZED_NAME_CLASS_NAME = "className";
  @SerializedName(SERIALIZED_NAME_CLASS_NAME)
-  private String className = null;
+  private String className;

  public static final String SERIALIZED_NAME_COLOR = "color";
  @SerializedName(SERIALIZED_NAME_COLOR)
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/Capitalization.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/Capitalization.java
@@ -31,27 +31,27 @@ import java.io.IOException;
 public class Capitalization {
  public static final String SERIALIZED_NAME_SMALL_CAMEL = "smallCamel";
  @SerializedName(SERIALIZED_NAME_SMALL_CAMEL)
-  private String smallCamel = null;
+  private String smallCamel;

  public static final String SERIALIZED_NAME_CAPITAL_CAMEL = "CapitalCamel";
  @SerializedName(SERIALIZED_NAME_CAPITAL_CAMEL)
-  private String capitalCamel = null;
+  private String capitalCamel;

  public static final String SERIALIZED_NAME_SMALL_SNAKE = "small_Snake";
  @SerializedName(SERIALIZED_NAME_SMALL_SNAKE)
-  private String smallSnake = null;
+  private String smallSnake;

  public static final String SERIALIZED_NAME_CAPITAL_SNAKE = "Capital_Snake";
  @SerializedName(SERIALIZED_NAME_CAPITAL_SNAKE)
-  private String capitalSnake = null;
+  private String capitalSnake;

  public static final String SERIALIZED_NAME_SC_A_E_T_H_FLOW_POINTS = "SCA_ETH_Flow_Points";
  @SerializedName(SERIALIZED_NAME_SC_A_E_T_H_FLOW_POINTS)
-  private String scAETHFlowPoints = null;
+  private String scAETHFlowPoints;

  public static final String SERIALIZED_NAME_A_T_T_N_A_M_E = "ATT_NAME";
  @SerializedName(SERIALIZED_NAME_A_T_T_N_A_M_E)
-  private String ATT_NAME = null;
+  private String ATT_NAME;

  public Capitalization smallCamel(String smallCamel) {
    this.smallCamel = smallCamel;
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/Cat.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/Cat.java
@@ -32,7 +32,7 @@ import org.openapitools.client.model.Animal;
 public class Cat extends Animal {
  public static final String SERIALIZED_NAME_DECLAWED = "declawed";
  @SerializedName(SERIALIZED_NAME_DECLAWED)
-  private Boolean declawed = null;
+  private Boolean declawed;

  public Cat declawed(Boolean declawed) {
    this.declawed = declawed;
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/Category.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/Category.java
@@ -31,11 +31,11 @@ import java.io.IOException;
 public class Category {
  public static final String SERIALIZED_NAME_ID = "id";
  @SerializedName(SERIALIZED_NAME_ID)
-  private Long id = null;
+  private Long id;

  public static final String SERIALIZED_NAME_NAME = "name";
  @SerializedName(SERIALIZED_NAME_NAME)
-  private String name = null;
+  private String name;

  public Category id(Long id) {
    this.id = id;
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/ClassModel.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/ClassModel.java
@@ -32,7 +32,7 @@ import java.io.IOException;
 public class ClassModel {
  public static final String SERIALIZED_NAME_PROPERTY_CLASS = "_class";
  @SerializedName(SERIALIZED_NAME_PROPERTY_CLASS)
-  private String propertyClass = null;
+  private String propertyClass;

  public ClassModel propertyClass(String propertyClass) {
    this.propertyClass = propertyClass;
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/Client.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/Client.java
@@ -31,7 +31,7 @@ import java.io.IOException;
 public class Client {
  public static final String SERIALIZED_NAME_CLIENT = "client";
  @SerializedName(SERIALIZED_NAME_CLIENT)
-  private String client = null;
+  private String client;

  public Client client(String client) {
    this.client = client;
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/Dog.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/Dog.java
@@ -32,7 +32,7 @@ import org.openapitools.client.model.Animal;
 public class Dog extends Animal {
  public static final String SERIALIZED_NAME_BREED = "breed";
  @SerializedName(SERIALIZED_NAME_BREED)
-  private String breed = null;
+  private String breed;

  public Dog breed(String breed) {
    this.breed = breed;
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/EnumArrays.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/EnumArrays.java
@@ -80,7 +80,7 @@ public class EnumArrays {

  public static final String SERIALIZED_NAME_JUST_SYMBOL = "just_symbol";
  @SerializedName(SERIALIZED_NAME_JUST_SYMBOL)
-  private JustSymbolEnum justSymbol = null;
+  private JustSymbolEnum justSymbol;

  /**
   * Gets or Sets arrayEnum
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/EnumTest.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/EnumTest.java
@@ -81,7 +81,7 @@ public class EnumTest {

  public static final String SERIALIZED_NAME_ENUM_STRING = "enum_string";
  @SerializedName(SERIALIZED_NAME_ENUM_STRING)
-  private EnumStringEnum enumString = null;
+  private EnumStringEnum enumString;

  /**
   * Gets or Sets enumStringRequired
@@ -134,7 +134,7 @@ public class EnumTest {

  public static final String SERIALIZED_NAME_ENUM_STRING_REQUIRED = "enum_string_required";
  @SerializedName(SERIALIZED_NAME_ENUM_STRING_REQUIRED)
-  private EnumStringRequiredEnum enumStringRequired = null;
+  private EnumStringRequiredEnum enumStringRequired;

  /**
   * Gets or Sets enumInteger
@@ -185,7 +185,7 @@ public class EnumTest {

  public static final String SERIALIZED_NAME_ENUM_INTEGER = "enum_integer";
  @SerializedName(SERIALIZED_NAME_ENUM_INTEGER)
-  private EnumIntegerEnum enumInteger = null;
+  private EnumIntegerEnum enumInteger;

  /**
   * Gets or Sets enumNumber
@@ -236,7 +236,7 @@ public class EnumTest {

  public static final String SERIALIZED_NAME_ENUM_NUMBER = "enum_number";
  @SerializedName(SERIALIZED_NAME_ENUM_NUMBER)
-  private EnumNumberEnum enumNumber = null;
+  private EnumNumberEnum enumNumber;

  public static final String SERIALIZED_NAME_OUTER_ENUM = "outerEnum";
  @SerializedName(SERIALIZED_NAME_OUTER_ENUM)
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/FormatTest.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/FormatTest.java
@@ -36,55 +36,55 @@ import org.threeten.bp.OffsetDateTime;
 public class FormatTest {
  public static final String SERIALIZED_NAME_INTEGER = "integer";
  @SerializedName(SERIALIZED_NAME_INTEGER)
-  private Integer integer = null;
+  private Integer integer;

  public static final String SERIALIZED_NAME_INT32 = "int32";
  @SerializedName(SERIALIZED_NAME_INT32)
-  private Integer int32 = null;
+  private Integer int32;

  public static final String SERIALIZED_NAME_INT64 = "int64";
  @SerializedName(SERIALIZED_NAME_INT64)
-  private Long int64 = null;
+  private Long int64;

  public static final String SERIALIZED_NAME_NUMBER = "number";
  @SerializedName(SERIALIZED_NAME_NUMBER)
-  private BigDecimal number = null;
+  private BigDecimal number;

  public static final String SERIALIZED_NAME_FLOAT = "float";
  @SerializedName(SERIALIZED_NAME_FLOAT)
-  private Float _float = null;
+  private Float _float;

  public static final String SERIALIZED_NAME_DOUBLE = "double";
  @SerializedName(SERIALIZED_NAME_DOUBLE)
-  private Double _double = null;
+  private Double _double;

  public static final String SERIALIZED_NAME_STRING = "string";
  @SerializedName(SERIALIZED_NAME_STRING)
-  private String string = null;
+  private String string;

  public static final String SERIALIZED_NAME_BYTE = "byte";
  @SerializedName(SERIALIZED_NAME_BYTE)
-  private byte[] _byte = null;
+  private byte[] _byte;

  public static final String SERIALIZED_NAME_BINARY = "binary";
  @SerializedName(SERIALIZED_NAME_BINARY)
-  private File binary = null;
+  private File binary;

  public static final String SERIALIZED_NAME_DATE = "date";
  @SerializedName(SERIALIZED_NAME_DATE)
-  private LocalDate date = null;
+  private LocalDate date;

  public static final String SERIALIZED_NAME_DATE_TIME = "dateTime";
  @SerializedName(SERIALIZED_NAME_DATE_TIME)
-  private OffsetDateTime dateTime = null;
+  private OffsetDateTime dateTime;

  public static final String SERIALIZED_NAME_UUID = "uuid";
  @SerializedName(SERIALIZED_NAME_UUID)
-  private UUID uuid = null;
+  private UUID uuid;

  public static final String SERIALIZED_NAME_PASSWORD = "password";
  @SerializedName(SERIALIZED_NAME_PASSWORD)
-  private String password = null;
+  private String password;

  public FormatTest integer(Integer integer) {
    this.integer = integer;
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/HasOnlyReadOnly.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/HasOnlyReadOnly.java
@@ -31,11 +31,11 @@ import java.io.IOException;
 public class HasOnlyReadOnly {
  public static final String SERIALIZED_NAME_BAR = "bar";
  @SerializedName(SERIALIZED_NAME_BAR)
-  private String bar = null;
+  private String bar;

  public static final String SERIALIZED_NAME_FOO = "foo";
  @SerializedName(SERIALIZED_NAME_FOO)
-  private String foo = null;
+  private String foo;

   /**
   * Get bar
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -37,11 +37,11 @@ import org.threeten.bp.OffsetDateTime;
 public class MixedPropertiesAndAdditionalPropertiesClass {
  public static final String SERIALIZED_NAME_UUID = "uuid";
  @SerializedName(SERIALIZED_NAME_UUID)
-  private UUID uuid = null;
+  private UUID uuid;

  public static final String SERIALIZED_NAME_DATE_TIME = "dateTime";
  @SerializedName(SERIALIZED_NAME_DATE_TIME)
-  private OffsetDateTime dateTime = null;
+  private OffsetDateTime dateTime;

  public static final String SERIALIZED_NAME_MAP = "map";
  @SerializedName(SERIALIZED_NAME_MAP)
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/Model200Response.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/Model200Response.java
@@ -32,11 +32,11 @@ import java.io.IOException;
 public class Model200Response {
  public static final String SERIALIZED_NAME_NAME = "name";
  @SerializedName(SERIALIZED_NAME_NAME)
-  private Integer name = null;
+  private Integer name;

  public static final String SERIALIZED_NAME_PROPERTY_CLASS = "class";
  @SerializedName(SERIALIZED_NAME_PROPERTY_CLASS)
-  private String propertyClass = null;
+  private String propertyClass;

  public Model200Response name(Integer name) {
    this.name = name;
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/ModelApiResponse.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/ModelApiResponse.java
@@ -31,15 +31,15 @@ import java.io.IOException;
 public class ModelApiResponse {
  public static final String SERIALIZED_NAME_CODE = "code";
  @SerializedName(SERIALIZED_NAME_CODE)
-  private Integer code = null;
+  private Integer code;

  public static final String SERIALIZED_NAME_TYPE = "type";
  @SerializedName(SERIALIZED_NAME_TYPE)
-  private String type = null;
+  private String type;

  public static final String SERIALIZED_NAME_MESSAGE = "message";
  @SerializedName(SERIALIZED_NAME_MESSAGE)
-  private String message = null;
+  private String message;

  public ModelApiResponse code(Integer code) {
    this.code = code;
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/ModelReturn.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/ModelReturn.java
@@ -32,7 +32,7 @@ import java.io.IOException;
 public class ModelReturn {
  public static final String SERIALIZED_NAME_RETURN = "return";
  @SerializedName(SERIALIZED_NAME_RETURN)
-  private Integer _return = null;
+  private Integer _return;

  public ModelReturn _return(Integer _return) {
    this._return = _return;
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/Name.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/Name.java
@@ -32,19 +32,19 @@ import java.io.IOException;
 public class Name {
  public static final String SERIALIZED_NAME_NAME = "name";
  @SerializedName(SERIALIZED_NAME_NAME)
-  private Integer name = null;
+  private Integer name;

  public static final String SERIALIZED_NAME_SNAKE_CASE = "snake_case";
  @SerializedName(SERIALIZED_NAME_SNAKE_CASE)
-  private Integer snakeCase = null;
+  private Integer snakeCase;

  public static final String SERIALIZED_NAME_PROPERTY = "property";
  @SerializedName(SERIALIZED_NAME_PROPERTY)
-  private String property = null;
+  private String property;

  public static final String SERIALIZED_NAME_123NUMBER = "123Number";
  @SerializedName(SERIALIZED_NAME_123NUMBER)
-  private Integer _123number = null;
+  private Integer _123number;

  public Name name(Integer name) {
    this.name = name;
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/NumberOnly.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/NumberOnly.java
@@ -32,7 +32,7 @@ import java.math.BigDecimal;
 public class NumberOnly {
  public static final String SERIALIZED_NAME_JUST_NUMBER = "JustNumber";
  @SerializedName(SERIALIZED_NAME_JUST_NUMBER)
-  private BigDecimal justNumber = null;
+  private BigDecimal justNumber;

  public NumberOnly justNumber(BigDecimal justNumber) {
    this.justNumber = justNumber;
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/Order.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/Order.java
@@ -32,19 +32,19 @@ import org.threeten.bp.OffsetDateTime;
 public class Order {
  public static final String SERIALIZED_NAME_ID = "id";
  @SerializedName(SERIALIZED_NAME_ID)
-  private Long id = null;
+  private Long id;

  public static final String SERIALIZED_NAME_PET_ID = "petId";
  @SerializedName(SERIALIZED_NAME_PET_ID)
-  private Long petId = null;
+  private Long petId;

  public static final String SERIALIZED_NAME_QUANTITY = "quantity";
  @SerializedName(SERIALIZED_NAME_QUANTITY)
-  private Integer quantity = null;
+  private Integer quantity;

  public static final String SERIALIZED_NAME_SHIP_DATE = "shipDate";
  @SerializedName(SERIALIZED_NAME_SHIP_DATE)
-  private OffsetDateTime shipDate = null;
+  private OffsetDateTime shipDate;

  /**
   * Order Status
@@ -97,7 +97,7 @@ public class Order {

  public static final String SERIALIZED_NAME_STATUS = "status";
  @SerializedName(SERIALIZED_NAME_STATUS)
-  private StatusEnum status = null;
+  private StatusEnum status;

  public static final String SERIALIZED_NAME_COMPLETE = "complete";
  @SerializedName(SERIALIZED_NAME_COMPLETE)
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/OuterComposite.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/OuterComposite.java
@@ -32,15 +32,15 @@ import java.math.BigDecimal;
 public class OuterComposite {
  public static final String SERIALIZED_NAME_MY_NUMBER = "my_number";
  @SerializedName(SERIALIZED_NAME_MY_NUMBER)
-  private BigDecimal myNumber = null;
+  private BigDecimal myNumber;

  public static final String SERIALIZED_NAME_MY_STRING = "my_string";
  @SerializedName(SERIALIZED_NAME_MY_STRING)
-  private String myString = null;
+  private String myString;

  public static final String SERIALIZED_NAME_MY_BOOLEAN = "my_boolean";
  @SerializedName(SERIALIZED_NAME_MY_BOOLEAN)
-  private Boolean myBoolean = null;
+  private Boolean myBoolean;

  public OuterComposite myNumber(BigDecimal myNumber) {
    this.myNumber = myNumber;
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/Pet.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/Pet.java
@@ -35,7 +35,7 @@ import org.openapitools.client.model.Tag;
 public class Pet {
  public static final String SERIALIZED_NAME_ID = "id";
  @SerializedName(SERIALIZED_NAME_ID)
-  private Long id = null;
+  private Long id;

  public static final String SERIALIZED_NAME_CATEGORY = "category";
  @SerializedName(SERIALIZED_NAME_CATEGORY)
@@ -43,7 +43,7 @@ public class Pet {

  public static final String SERIALIZED_NAME_NAME = "name";
  @SerializedName(SERIALIZED_NAME_NAME)
-  private String name = null;
+  private String name;

  public static final String SERIALIZED_NAME_PHOTO_URLS = "photoUrls";
  @SerializedName(SERIALIZED_NAME_PHOTO_URLS)
@@ -104,7 +104,7 @@ public class Pet {

  public static final String SERIALIZED_NAME_STATUS = "status";
  @SerializedName(SERIALIZED_NAME_STATUS)
-  private StatusEnum status = null;
+  private StatusEnum status;

  public Pet id(Long id) {
    this.id = id;
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/ReadOnlyFirst.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/ReadOnlyFirst.java
@@ -31,11 +31,11 @@ import java.io.IOException;
 public class ReadOnlyFirst {
  public static final String SERIALIZED_NAME_BAR = "bar";
  @SerializedName(SERIALIZED_NAME_BAR)
-  private String bar = null;
+  private String bar;

  public static final String SERIALIZED_NAME_BAZ = "baz";
  @SerializedName(SERIALIZED_NAME_BAZ)
-  private String baz = null;
+  private String baz;

   /**
   * Get bar
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/SpecialModelName.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/SpecialModelName.java
@@ -31,7 +31,7 @@ import java.io.IOException;
 public class SpecialModelName {
  public static final String SERIALIZED_NAME_$_SPECIAL_PROPERTY_NAME = "$special[property.name]";
  @SerializedName(SERIALIZED_NAME_$_SPECIAL_PROPERTY_NAME)
-  private Long $specialPropertyName = null;
+  private Long $specialPropertyName;

  public SpecialModelName $specialPropertyName(Long $specialPropertyName) {
    this.$specialPropertyName = $specialPropertyName;
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/Tag.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/Tag.java
@@ -31,11 +31,11 @@ import java.io.IOException;
 public class Tag {
  public static final String SERIALIZED_NAME_ID = "id";
  @SerializedName(SERIALIZED_NAME_ID)
-  private Long id = null;
+  private Long id;

  public static final String SERIALIZED_NAME_NAME = "name";
  @SerializedName(SERIALIZED_NAME_NAME)
-  private String name = null;
+  private String name;

  public Tag id(Long id) {
    this.id = id;
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/User.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/User.java
@@ -31,35 +31,35 @@ import java.io.IOException;
 public class User {
  public static final String SERIALIZED_NAME_ID = "id";
  @SerializedName(SERIALIZED_NAME_ID)
-  private Long id = null;
+  private Long id;

  public static final String SERIALIZED_NAME_USERNAME = "username";
  @SerializedName(SERIALIZED_NAME_USERNAME)
-  private String username = null;
+  private String username;

  public static final String SERIALIZED_NAME_FIRST_NAME = "firstName";
  @SerializedName(SERIALIZED_NAME_FIRST_NAME)
-  private String firstName = null;
+  private String firstName;

  public static final String SERIALIZED_NAME_LAST_NAME = "lastName";
  @SerializedName(SERIALIZED_NAME_LAST_NAME)
-  private String lastName = null;
+  private String lastName;

  public static final String SERIALIZED_NAME_EMAIL = "email";
  @SerializedName(SERIALIZED_NAME_EMAIL)
-  private String email = null;
+  private String email;

  public static final String SERIALIZED_NAME_PASSWORD = "password";
  @SerializedName(SERIALIZED_NAME_PASSWORD)
-  private String password = null;
+  private String password;

  public static final String SERIALIZED_NAME_PHONE = "phone";
  @SerializedName(SERIALIZED_NAME_PHONE)
-  private String phone = null;
+  private String phone;

  public static final String SERIALIZED_NAME_USER_STATUS = "userStatus";
  @SerializedName(SERIALIZED_NAME_USER_STATUS)
-  private Integer userStatus = null;
+  private Integer userStatus;

  public User id(Long id) {
    this.id = id;