[Java] add nullable support to the clients

modules/openapi-generator/src/main/resources/Java/pojo.mustache

@@ -129,7 +129,14 @@ public class {{classname}} {{#parent}}extends {{{parent}}} {{/parent}}{{#parcela
   {{/maximum}}
    * @return {{name}}
   **/
-{{^required}}  @javax.annotation.Nullable {{/required}}
+{{#required}}
+{{#isNullable}}
+  @javax.annotation.Nullable
+{{/isNullable}}
+{{/required}}
+{{^required}}
+  @javax.annotation.Nullable
+{{/required}}
 {{#useBeanValidation}}{{>beanValidation}}{{/useBeanValidation}}  @ApiModelProperty({{#example}}example = "{{{example}}}", {{/example}}{{#required}}required = {{required}}, {{/required}}value = "{{{description}}}")
 {{#vendorExtensions.extraAnnotation}}
   {{{vendorExtensions.extraAnnotation}}}

samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/AdditionalPropertiesAnyType.java

@@ -40,7 +40,7 @@ public AdditionalPropertiesAnyType name(String name) {
    * Get name
    * @return name
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public String getName() {
     return name;

samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/AdditionalPropertiesArray.java

@@ -41,7 +41,7 @@ public AdditionalPropertiesArray name(String name) {
    * Get name
    * @return name
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public String getName() {
     return name;

samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/AdditionalPropertiesBoolean.java

@@ -40,7 +40,7 @@ public AdditionalPropertiesBoolean name(String name) {
    * Get name
    * @return name
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public String getName() {
     return name;

samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/AdditionalPropertiesClass.java

@@ -80,7 +80,7 @@ public AdditionalPropertiesClass putMapStringItem(String key, String mapStringIt
    * Get mapString
    * @return mapString
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public Map<String, String> getMapString() {
     return mapString;
@@ -107,7 +107,7 @@ public AdditionalPropertiesClass putMapNumberItem(String key, BigDecimal mapNumb
    * Get mapNumber
    * @return mapNumber
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public Map<String, BigDecimal> getMapNumber() {
     return mapNumber;
@@ -134,7 +134,7 @@ public AdditionalPropertiesClass putMapIntegerItem(String key, Integer mapIntege
    * Get mapInteger
    * @return mapInteger
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public Map<String, Integer> getMapInteger() {
     return mapInteger;
@@ -161,7 +161,7 @@ public AdditionalPropertiesClass putMapBooleanItem(String key, Boolean mapBoolea
    * Get mapBoolean
    * @return mapBoolean
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public Map<String, Boolean> getMapBoolean() {
     return mapBoolean;
@@ -188,7 +188,7 @@ public AdditionalPropertiesClass putMapArrayIntegerItem(String key, List<Integer
    * Get mapArrayInteger
    * @return mapArrayInteger
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public Map<String, List<Integer>> getMapArrayInteger() {
     return mapArrayInteger;
@@ -215,7 +215,7 @@ public AdditionalPropertiesClass putMapArrayAnytypeItem(String key, List<Object>
    * Get mapArrayAnytype
    * @return mapArrayAnytype
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public Map<String, List<Object>> getMapArrayAnytype() {
     return mapArrayAnytype;
@@ -242,7 +242,7 @@ public AdditionalPropertiesClass putMapMapStringItem(String key, Map<String, Str
    * Get mapMapString
    * @return mapMapString
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public Map<String, Map<String, String>> getMapMapString() {
     return mapMapString;
@@ -269,7 +269,7 @@ public AdditionalPropertiesClass putMapMapAnytypeItem(String key, Map<String, Ob
    * Get mapMapAnytype
    * @return mapMapAnytype
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public Map<String, Map<String, Object>> getMapMapAnytype() {
     return mapMapAnytype;
@@ -288,7 +288,7 @@ public AdditionalPropertiesClass anytype1(Object anytype1) {
    * Get anytype1
    * @return anytype1
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public Object getAnytype1() {
     return anytype1;
@@ -307,7 +307,7 @@ public AdditionalPropertiesClass anytype2(Object anytype2) {
    * Get anytype2
    * @return anytype2
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public Object getAnytype2() {
     return anytype2;
@@ -326,7 +326,7 @@ public AdditionalPropertiesClass anytype3(Object anytype3) {
    * Get anytype3
    * @return anytype3
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public Object getAnytype3() {
     return anytype3;

samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/AdditionalPropertiesInteger.java

@@ -40,7 +40,7 @@ public AdditionalPropertiesInteger name(String name) {
    * Get name
    * @return name
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public String getName() {
     return name;

samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/AdditionalPropertiesNumber.java

@@ -41,7 +41,7 @@ public AdditionalPropertiesNumber name(String name) {
    * Get name
    * @return name
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public String getName() {
     return name;

samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/AdditionalPropertiesObject.java

@@ -40,7 +40,7 @@ public AdditionalPropertiesObject name(String name) {
    * Get name
    * @return name
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public String getName() {
     return name;

samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/AdditionalPropertiesString.java

@@ -40,7 +40,7 @@ public AdditionalPropertiesString name(String name) {
    * Get name
    * @return name
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public String getName() {
     return name;

samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/Animal.java

@@ -49,7 +49,6 @@ public Animal className(String className) {
    * Get className
    * @return className
   **/
-
   @ApiModelProperty(required = true, value = "")
   public String getClassName() {
     return className;
@@ -68,7 +67,7 @@ public Animal color(String color) {
    * Get color
    * @return color
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public String getColor() {
     return color;

samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnly.java

@@ -49,7 +49,7 @@ public ArrayOfArrayOfNumberOnly addArrayArrayNumberItem(List<BigDecimal> arrayAr
    * Get arrayArrayNumber
    * @return arrayArrayNumber
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public List<List<BigDecimal>> getArrayArrayNumber() {
     return arrayArrayNumber;

samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/ArrayOfNumberOnly.java

@@ -49,7 +49,7 @@ public ArrayOfNumberOnly addArrayNumberItem(BigDecimal arrayNumberItem) {
    * Get arrayNumber
    * @return arrayNumber
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public List<BigDecimal> getArrayNumber() {
     return arrayNumber;

samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/ArrayTest.java

@@ -55,7 +55,7 @@ public ArrayTest addArrayOfStringItem(String arrayOfStringItem) {
    * Get arrayOfString
    * @return arrayOfString
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public List<String> getArrayOfString() {
     return arrayOfString;
@@ -82,7 +82,7 @@ public ArrayTest addArrayArrayOfIntegerItem(List<Long> arrayArrayOfIntegerItem)
    * Get arrayArrayOfInteger
    * @return arrayArrayOfInteger
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public List<List<Long>> getArrayArrayOfInteger() {
     return arrayArrayOfInteger;
@@ -109,7 +109,7 @@ public ArrayTest addArrayArrayOfModelItem(List<ReadOnlyFirst> arrayArrayOfModelI
    * Get arrayArrayOfModel
    * @return arrayArrayOfModel
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
     return arrayArrayOfModel;

samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/Capitalization.java

@@ -53,7 +53,7 @@ public Capitalization smallCamel(String smallCamel) {
    * Get smallCamel
    * @return smallCamel
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public String getSmallCamel() {
     return smallCamel;
@@ -72,7 +72,7 @@ public Capitalization capitalCamel(String capitalCamel) {
    * Get capitalCamel
    * @return capitalCamel
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public String getCapitalCamel() {
     return capitalCamel;
@@ -91,7 +91,7 @@ public Capitalization smallSnake(String smallSnake) {
    * Get smallSnake
    * @return smallSnake
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public String getSmallSnake() {
     return smallSnake;
@@ -110,7 +110,7 @@ public Capitalization capitalSnake(String capitalSnake) {
    * Get capitalSnake
    * @return capitalSnake
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public String getCapitalSnake() {
     return capitalSnake;
@@ -129,7 +129,7 @@ public Capitalization scAETHFlowPoints(String scAETHFlowPoints) {
    * Get scAETHFlowPoints
    * @return scAETHFlowPoints
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public String getScAETHFlowPoints() {
     return scAETHFlowPoints;
@@ -148,7 +148,7 @@ public Capitalization ATT_NAME(String ATT_NAME) {
    * Name of the pet 
    * @return ATT_NAME
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "Name of the pet ")
   public String getATTNAME() {
     return ATT_NAME;

samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/Cat.java

@@ -40,7 +40,7 @@ public Cat declawed(Boolean declawed) {
    * Get declawed
    * @return declawed
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public Boolean isDeclawed() {
     return declawed;

samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/CatAllOf.java

@@ -38,7 +38,7 @@ public CatAllOf declawed(Boolean declawed) {
    * Get declawed
    * @return declawed
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public Boolean isDeclawed() {
     return declawed;

samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/Category.java

@@ -41,7 +41,7 @@ public Category id(Long id) {
    * Get id
    * @return id
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public Long getId() {
     return id;
@@ -60,7 +60,6 @@ public Category name(String name) {
    * Get name
    * @return name
   **/
-
   @ApiModelProperty(required = true, value = "")
   public String getName() {
     return name;

samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/ClassModel.java

@@ -39,7 +39,7 @@ public ClassModel propertyClass(String propertyClass) {
    * Get propertyClass
    * @return propertyClass
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public String getPropertyClass() {
     return propertyClass;

samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/Client.java

@@ -38,7 +38,7 @@ public Client client(String client) {
    * Get client
    * @return client
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public String getClient() {
     return client;

samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/Dog.java

@@ -40,7 +40,7 @@ public Dog breed(String breed) {
    * Get breed
    * @return breed
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public String getBreed() {
     return breed;

samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/DogAllOf.java

@@ -38,7 +38,7 @@ public DogAllOf breed(String breed) {
    * Get breed
    * @return breed
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public String getBreed() {
     return breed;

samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/EnumArrays.java

@@ -113,7 +113,7 @@ public EnumArrays justSymbol(JustSymbolEnum justSymbol) {
    * Get justSymbol
    * @return justSymbol
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public JustSymbolEnum getJustSymbol() {
     return justSymbol;
@@ -140,7 +140,7 @@ public EnumArrays addArrayEnumItem(ArrayEnumEnum arrayEnumItem) {
    * Get arrayEnum
    * @return arrayEnum
   **/
-  @javax.annotation.Nullable 
+  @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   public List<ArrayEnumEnum> getArrayEnum() {
     return arrayEnum;