[PHP] BUGFIX: model_generic: fix missing setOpenAPInullablesSetToNull method (#13499)

* [PHP] Bugfix - model_generic.mustache: missing setter for openAPINullabelsSetToNull (which is invoked in the property setters)

* [AUTOGENERATED] update samples

* [PHP] Added test for nullable fields

modules/openapi-generator/src/main/resources/php/model_generic.mustache

@@ -88,6 +88,16 @@ class {{classname}} {{#parentSchema}}extends {{{parent}}}{{/parentSchema}}{{^par
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/AdditionalPropertiesClass.php

@@ -130,6 +130,16 @@ class AdditionalPropertiesClass implements ModelInterface, ArrayAccess, \JsonSer
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/AllOfWithSingleRef.php

@@ -130,6 +130,16 @@ class AllOfWithSingleRef implements ModelInterface, ArrayAccess, \JsonSerializab
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/Animal.php

@@ -130,6 +130,16 @@ class Animal implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/ApiResponse.php

@@ -133,6 +133,16 @@ class ApiResponse implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/ArrayOfArrayOfNumberOnly.php

@@ -127,6 +127,16 @@ class ArrayOfArrayOfNumberOnly implements ModelInterface, ArrayAccess, \JsonSeri
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/ArrayOfNumberOnly.php

@@ -127,6 +127,16 @@ class ArrayOfNumberOnly implements ModelInterface, ArrayAccess, \JsonSerializabl
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/ArrayTest.php

@@ -133,6 +133,16 @@ class ArrayTest implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/Capitalization.php

@@ -142,6 +142,16 @@ class Capitalization implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/Cat.php

@@ -125,6 +125,16 @@ class Cat extends Animal
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/CatAllOf.php

@@ -127,6 +127,16 @@ class CatAllOf implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/Category.php

@@ -130,6 +130,16 @@ class Category implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/ClassModel.php

@@ -128,6 +128,16 @@ class ClassModel implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/Client.php

@@ -127,6 +127,16 @@ class Client implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/DeprecatedObject.php

@@ -127,6 +127,16 @@ class DeprecatedObject implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/Dog.php

@@ -125,6 +125,16 @@ class Dog extends Animal
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/DogAllOf.php

@@ -127,6 +127,16 @@ class DogAllOf implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/EnumArrays.php

@@ -130,6 +130,16 @@ class EnumArrays implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/EnumTest.php

@@ -148,6 +148,16 @@ class EnumTest implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/File.php

@@ -128,6 +128,16 @@ class File implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/FileSchemaTestClass.php

@@ -130,6 +130,16 @@ class FileSchemaTestClass implements ModelInterface, ArrayAccess, \JsonSerializa
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/Foo.php

@@ -127,6 +127,16 @@ class Foo implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/FooGetDefaultResponse.php

@@ -127,6 +127,16 @@ class FooGetDefaultResponse implements ModelInterface, ArrayAccess, \JsonSeriali
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/FormatTest.php

@@ -172,6 +172,16 @@ class FormatTest implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/HasOnlyReadOnly.php

@@ -130,6 +130,16 @@ class HasOnlyReadOnly implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/HealthCheckResult.php

@@ -128,6 +128,16 @@ class HealthCheckResult implements ModelInterface, ArrayAccess, \JsonSerializabl
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/MapTest.php

@@ -136,6 +136,16 @@ class MapTest implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/MixedPropertiesAndAdditionalPropertiesClass.php

@@ -133,6 +133,16 @@ class MixedPropertiesAndAdditionalPropertiesClass implements ModelInterface, Arr
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/Model200Response.php

@@ -131,6 +131,16 @@ class Model200Response implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/ModelList.php

@@ -127,6 +127,16 @@ class ModelList implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/ModelReturn.php

@@ -128,6 +128,16 @@ class ModelReturn implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/Name.php

@@ -137,6 +137,16 @@ class Name implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/NullableClass.php

@@ -160,6 +160,16 @@ class NullableClass implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/NumberOnly.php

@@ -127,6 +127,16 @@ class NumberOnly implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/ObjectWithDeprecatedFields.php

@@ -136,6 +136,16 @@ class ObjectWithDeprecatedFields implements ModelInterface, ArrayAccess, \JsonSe
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/Order.php

@@ -142,6 +142,16 @@ class Order implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/OuterComposite.php

@@ -133,6 +133,16 @@ class OuterComposite implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/OuterObjectWithEnumProperty.php

@@ -127,6 +127,16 @@ class OuterObjectWithEnumProperty implements ModelInterface, ArrayAccess, \JsonS
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/Pet.php

@@ -142,6 +142,16 @@ class Pet implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/ReadOnlyFirst.php

@@ -130,6 +130,16 @@ class ReadOnlyFirst implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/SpecialModelName.php

@@ -127,6 +127,16 @@ class SpecialModelName implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/Tag.php

@@ -130,6 +130,16 @@ class Tag implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/lib/Model/User.php

@@ -148,6 +148,16 @@ class User implements ModelInterface, ArrayAccess, \JsonSerializable
         return $this->openAPINullablesSetToNull;
     }
 
+    /**
+     * Setter - Array of nullable field names deliberately set to null
+     *
+     * @param boolean[] $openAPINullablesSetToNull
+     */
+    private function setOpenAPINullablesSetToNull(array $openAPINullablesSetToNull): void
+    {
+        $this->openAPINullablesSetToNull = $openAPINullablesSetToNull;
+    }
+
     /**
      * Checks if a property is nullable
      *

samples/client/petstore/php/OpenAPIClient-php/tests/NullableTest.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace OpenAPI\Client;
+
+use InvalidArgumentException;
+use OpenAPI\Client\Model\Name;
+use OpenAPI\Client\Model\NullableClass;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * class NullableTest
+ *
+ * @package OpenAPI\Client
+ */
+class NullableTest extends TestCase
+{
+    public function testNotNullableException(): void
+    {
+        $name = new Name();
+        $name->setName(1);
+        $this->assertEquals(1, $name->getName(), 'Non-nullable property can be set and retains its value');
+
+        $this->expectException(InvalidArgumentException::class);
+        $this->expectExceptionMessage('non-nullable name cannot be null');
+
+        $name->setName(null);
+    }
+
+    public function testNullableobject(): void
+    {
+        $nullable = new NullableClass();
+
+        $nullable->setIntegerProp(null);
+        $this->assertNull($nullable->getIntegerProp(), 'Nullable property can be set to null retains its value');
+
+        $nullable->setIntegerProp(1);
+        $this->assertEquals(1, $nullable->getIntegerProp(), 'Nullable property can be set and retains its value');
+    }
+}