diff --git a/modules/openapi-generator/src/main/resources/php/model_doc.mustache b/modules/openapi-generator/src/main/resources/php/model_doc.mustache
index 0216a3372cdb..7b92160aa922 100644
--- a/modules/openapi-generator/src/main/resources/php/model_doc.mustache
+++ b/modules/openapi-generator/src/main/resources/php/model_doc.mustache
@@ -6,6 +6,6 @@ Name | Type | Description | Notes
 {{#vars}}**{{name}}** | {{#isPrimitiveType}}**{{dataType}}**{{/isPrimitiveType}}{{^isPrimitiveType}}[**{{dataType}}**]({{complexType}}.md){{/isPrimitiveType}} | {{description}} | {{^required}}[optional] {{/required}}{{#readOnly}}[readonly] {{/readOnly}}{{#defaultValue}}[default to {{{.}}}]{{/defaultValue}}
 {{/vars}}
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 {{/model}}{{/models}}
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/AdditionalPropertiesClass.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/AdditionalPropertiesClass.md
index b162fe9595fb..869cdcbb5d0c 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/AdditionalPropertiesClass.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/AdditionalPropertiesClass.md
@@ -6,6 +6,6 @@ Name | Type | Description | Notes
 **map_property** | **map[string,string]** |  | [optional] 
 **map_of_map_property** | [**map[string,map[string,string]]**](map.md) |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Animal.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Animal.md
index c57fbe8ea4aa..9ea562fe1449 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Animal.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Animal.md
@@ -6,6 +6,6 @@ Name | Type | Description | Notes
 **class_name** | **string** |  | 
 **color** | **string** |  | [optional] [default to 'red']
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/AnimalFarm.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/AnimalFarm.md
deleted file mode 100644
index df6bab21dae8..000000000000
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/AnimalFarm.md
+++ /dev/null
@@ -1,9 +0,0 @@
-# AnimalFarm
-
-## Properties
-Name | Type | Description | Notes
------------- | ------------- | ------------- | -------------
-
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
-
-
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ApiResponse.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ApiResponse.md
index 9d3511834227..d15f2dce2761 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ApiResponse.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ApiResponse.md
@@ -7,6 +7,6 @@ Name | Type | Description | Notes
 **type** | **string** |  | [optional] 
 **message** | **string** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ArrayOfArrayOfNumberOnly.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ArrayOfArrayOfNumberOnly.md
index 7831e1898882..aed435112f98 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ArrayOfArrayOfNumberOnly.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ArrayOfArrayOfNumberOnly.md
@@ -5,6 +5,6 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **array_array_number** | [**float[][]**](array.md) |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ArrayOfNumberOnly.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ArrayOfNumberOnly.md
index a32607e42012..949b88ded0a8 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ArrayOfNumberOnly.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ArrayOfNumberOnly.md
@@ -5,6 +5,6 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **array_number** | **float[]** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ArrayTest.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ArrayTest.md
index 2ef4e3785e4c..eef7ab1b5b71 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ArrayTest.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ArrayTest.md
@@ -7,6 +7,6 @@ Name | Type | Description | Notes
 **array_array_of_integer** | [**int[][]**](array.md) |  | [optional] 
 **array_array_of_model** | [**\OpenAPI\Client\Model\ReadOnlyFirst[][]**](array.md) |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Capitalization.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Capitalization.md
index 0fcc9e873d71..c9c90ba25023 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Capitalization.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Capitalization.md
@@ -10,6 +10,6 @@ Name | Type | Description | Notes
 **sca_eth_flow_points** | **string** |  | [optional] 
 **att_name** | **string** | Name of the pet | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Cat.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Cat.md
index 8d30565d014e..88ffac3e31b9 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Cat.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Cat.md
@@ -5,6 +5,6 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **declawed** | **bool** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Category.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Category.md
index 369f811a4eb8..a275eb329959 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Category.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Category.md
@@ -6,6 +6,6 @@ Name | Type | Description | Notes
 **id** | **int** |  | [optional] 
 **name** | **string** |  | [default to 'default-name']
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ClassModel.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ClassModel.md
index 3ad025b6ed3a..a017385eea3a 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ClassModel.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ClassModel.md
@@ -5,6 +5,6 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **_class** | **string** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Client.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Client.md
index f6047a624710..e8371167c519 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Client.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Client.md
@@ -5,6 +5,6 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **client** | **string** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Dog.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Dog.md
index 3c04bdf4cf70..262a24033187 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Dog.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Dog.md
@@ -5,6 +5,6 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **breed** | **string** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/EnumArrays.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/EnumArrays.md
index ebaedecdae0e..5d15a764ed16 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/EnumArrays.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/EnumArrays.md
@@ -6,6 +6,6 @@ Name | Type | Description | Notes
 **just_symbol** | **string** |  | [optional] 
 **array_enum** | **string[]** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/EnumClass.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/EnumClass.md
index 67f017becd0c..7f5dd450d1c9 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/EnumClass.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/EnumClass.md
@@ -4,6 +4,6 @@
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/EnumTest.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/EnumTest.md
index 9aca24e644ed..d9adb8fcc220 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/EnumTest.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/EnumTest.md
@@ -9,6 +9,6 @@ Name | Type | Description | Notes
 **enum_number** | **double** |  | [optional] 
 **outer_enum** | [**\OpenAPI\Client\Model\OuterEnum**](OuterEnum.md) |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/File.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/File.md
index bd3963bca31d..92110178d1c7 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/File.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/File.md
@@ -5,6 +5,6 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **source_uri** | **string** | Test capitalization | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/FileSchemaTestClass.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/FileSchemaTestClass.md
index af7d650390cb..1eb5cc96dcf2 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/FileSchemaTestClass.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/FileSchemaTestClass.md
@@ -6,6 +6,6 @@ Name | Type | Description | Notes
 **file** | [**\OpenAPI\Client\Model\File**](File.md) |  | [optional] 
 **files** | [**\OpenAPI\Client\Model\File[]**](File.md) |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/FormatTest.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/FormatTest.md
index e106ff1eba2e..fb83b0cc76a8 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/FormatTest.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/FormatTest.md
@@ -17,6 +17,6 @@ Name | Type | Description | Notes
 **uuid** | **string** |  | [optional] 
 **password** | **string** |  | 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/HasOnlyReadOnly.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/HasOnlyReadOnly.md
index 5e64572b781d..92f291a68b1b 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/HasOnlyReadOnly.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/HasOnlyReadOnly.md
@@ -6,6 +6,6 @@ Name | Type | Description | Notes
 **bar** | **string** |  | [optional] 
 **foo** | **string** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/MapTest.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/MapTest.md
index e2a51f7ddcd3..47c6c76656ae 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/MapTest.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/MapTest.md
@@ -8,6 +8,6 @@ Name | Type | Description | Notes
 **direct_map** | **map[string,bool]** |  | [optional] 
 **indirect_map** | **map[string,bool]** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/MixedPropertiesAndAdditionalPropertiesClass.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/MixedPropertiesAndAdditionalPropertiesClass.md
index a34e2f6d129f..4216dd89086d 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/MixedPropertiesAndAdditionalPropertiesClass.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/MixedPropertiesAndAdditionalPropertiesClass.md
@@ -7,6 +7,6 @@ Name | Type | Description | Notes
 **date_time** | [**\DateTime**](\DateTime.md) |  | [optional] 
 **map** | [**map[string,\OpenAPI\Client\Model\Animal]**](Animal.md) |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Model200Response.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Model200Response.md
index ebbea5c68af1..c0b33d0cd435 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Model200Response.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Model200Response.md
@@ -6,6 +6,6 @@ Name | Type | Description | Notes
 **name** | **int** |  | [optional] 
 **class** | **string** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ModelList.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ModelList.md
index e18ba4e123df..3075a1fcff98 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ModelList.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ModelList.md
@@ -5,6 +5,6 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **_123_list** | **string** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ModelReturn.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ModelReturn.md
index 9adb62e1e121..1fddf1b80fdc 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ModelReturn.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ModelReturn.md
@@ -5,6 +5,6 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **return** | **int** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Name.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Name.md
index 4565647e1ef6..5e75eddd5916 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Name.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Name.md
@@ -8,6 +8,6 @@ Name | Type | Description | Notes
 **property** | **string** |  | [optional] 
 **_123_number** | **int** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/NumberOnly.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/NumberOnly.md
index 93a0fde7b931..8ee0abc05cc2 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/NumberOnly.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/NumberOnly.md
@@ -5,6 +5,6 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **just_number** | **float** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Order.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Order.md
index ddae5cc2b571..5edcb2fa9f38 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Order.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Order.md
@@ -10,6 +10,6 @@ Name | Type | Description | Notes
 **status** | **string** | Order Status | [optional] 
 **complete** | **bool** |  | [optional] [default to false]
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/OuterComposite.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/OuterComposite.md
index e79675213950..ef7eab62642e 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/OuterComposite.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/OuterComposite.md
@@ -7,6 +7,6 @@ Name | Type | Description | Notes
 **my_string** | **string** |  | [optional] 
 **my_boolean** | **bool** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/OuterEnum.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/OuterEnum.md
index 06d413b01680..75effd8bb072 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/OuterEnum.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/OuterEnum.md
@@ -4,6 +4,6 @@
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Pet.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Pet.md
index 2d281a3c4990..554039289fa4 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Pet.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Pet.md
@@ -10,6 +10,6 @@ Name | Type | Description | Notes
 **tags** | [**\OpenAPI\Client\Model\Tag[]**](Tag.md) |  | [optional] 
 **status** | **string** | pet status in the store | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ReadOnlyFirst.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ReadOnlyFirst.md
index 90662a00cf32..767505b24e65 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ReadOnlyFirst.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/ReadOnlyFirst.md
@@ -6,6 +6,6 @@ Name | Type | Description | Notes
 **bar** | **string** |  | [optional] 
 **baz** | **string** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/SpecialModelName.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/SpecialModelName.md
index 022ee19169ce..58c1b2d80e80 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/SpecialModelName.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/SpecialModelName.md
@@ -5,6 +5,6 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **special_property_name** | **int** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/StringBooleanMap.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/StringBooleanMap.md
deleted file mode 100644
index 7abf11ec68b1..000000000000
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/StringBooleanMap.md
+++ /dev/null
@@ -1,9 +0,0 @@
-# StringBooleanMap
-
-## Properties
-Name | Type | Description | Notes
------------- | ------------- | ------------- | -------------
-
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
-
-
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Tag.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Tag.md
index 15ec3e0a91df..78ae82d19ef9 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Tag.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/Tag.md
@@ -6,6 +6,6 @@ Name | Type | Description | Notes
 **id** | **int** |  | [optional] 
 **name** | **string** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/TypeHolderDefault.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/TypeHolderDefault.md
index b03925fa9ceb..f3f183c62c33 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/TypeHolderDefault.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/TypeHolderDefault.md
@@ -9,6 +9,6 @@ Name | Type | Description | Notes
 **bool_item** | **bool** |  | [default to true]
 **array_item** | **int[]** |  | 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/TypeHolderExample.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/TypeHolderExample.md
index 07fb85843da2..4ee71e6deed4 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/TypeHolderExample.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/TypeHolderExample.md
@@ -9,6 +9,6 @@ Name | Type | Description | Notes
 **bool_item** | **bool** |  | 
 **array_item** | **int[]** |  | 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/User.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/User.md
index ff278fd4889e..d436a4653dde 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/User.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/User.md
@@ -12,6 +12,6 @@ Name | Type | Description | Notes
 **phone** | **string** |  | [optional] 
 **user_status** | **int** | User Status | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/XmlItem.md b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/XmlItem.md
index 9fc2e89deac1..28181e4d9440 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/docs/Model/XmlItem.md
+++ b/samples/client/petstore/php/OpenAPIClient-php/docs/Model/XmlItem.md
@@ -33,6 +33,6 @@ Name | Type | Description | Notes
 **prefix_ns_array** | **int[]** |  | [optional] 
 **prefix_ns_wrapped_array** | **int[]** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/client/petstore/php/OpenAPIClient-php/lib/Model/AnimalFarm.php b/samples/client/petstore/php/OpenAPIClient-php/lib/Model/AnimalFarm.php
deleted file mode 100644
index f5274027ff1c..000000000000
--- a/samples/client/petstore/php/OpenAPIClient-php/lib/Model/AnimalFarm.php
+++ /dev/null
@@ -1,272 +0,0 @@
-<?php
-/**
- * AnimalFarm
- *
- * PHP version 5
- *
- * @category Class
- * @package  OpenAPI\Client
- * @author   OpenAPI Generator team
- * @link     https://openapi-generator.tech
- */
-
-/**
- * OpenAPI Petstore
- *
- * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
- *
- * OpenAPI spec version: 1.0.0
- * 
- * Generated by: https://openapi-generator.tech
- * OpenAPI Generator version: 4.0.0-SNAPSHOT
- */
-
-/**
- * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
- * https://openapi-generator.tech
- * Do not edit the class manually.
- */
-
-namespace OpenAPI\Client\Model;
-
-use \ArrayAccess;
-use \OpenAPI\Client\ObjectSerializer;
-
-/**
- * AnimalFarm Class Doc Comment
- *
- * @category Class
- * @package  OpenAPI\Client
- * @author   OpenAPI Generator team
- * @link     https://openapi-generator.tech
- */
-class AnimalFarm implements ModelInterface, ArrayAccess
-{
-    const DISCRIMINATOR = null;
-
-    /**
-      * The original name of the model.
-      *
-      * @var string
-      */
-    protected static $openAPIModelName = 'AnimalFarm';
-
-    /**
-      * Array of property to type mappings. Used for (de)serialization
-      *
-      * @var string[]
-      */
-    protected static $openAPITypes = [
-        
-    ];
-
-    /**
-      * Array of property to format mappings. Used for (de)serialization
-      *
-      * @var string[]
-      */
-    protected static $openAPIFormats = [
-        
-    ];
-
-    /**
-     * Array of property to type mappings. Used for (de)serialization
-     *
-     * @return array
-     */
-    public static function openAPITypes()
-    {
-        return self::$openAPITypes;
-    }
-
-    /**
-     * Array of property to format mappings. Used for (de)serialization
-     *
-     * @return array
-     */
-    public static function openAPIFormats()
-    {
-        return self::$openAPIFormats;
-    }
-
-    /**
-     * Array of attributes where the key is the local name,
-     * and the value is the original name
-     *
-     * @var string[]
-     */
-    protected static $attributeMap = [
-        
-    ];
-
-    /**
-     * Array of attributes to setter functions (for deserialization of responses)
-     *
-     * @var string[]
-     */
-    protected static $setters = [
-        
-    ];
-
-    /**
-     * Array of attributes to getter functions (for serialization of requests)
-     *
-     * @var string[]
-     */
-    protected static $getters = [
-        
-    ];
-
-    /**
-     * Array of attributes where the key is the local name,
-     * and the value is the original name
-     *
-     * @return array
-     */
-    public static function attributeMap()
-    {
-        return self::$attributeMap;
-    }
-
-    /**
-     * Array of attributes to setter functions (for deserialization of responses)
-     *
-     * @return array
-     */
-    public static function setters()
-    {
-        return self::$setters;
-    }
-
-    /**
-     * Array of attributes to getter functions (for serialization of requests)
-     *
-     * @return array
-     */
-    public static function getters()
-    {
-        return self::$getters;
-    }
-
-    /**
-     * The original name of the model.
-     *
-     * @return string
-     */
-    public function getModelName()
-    {
-        return self::$openAPIModelName;
-    }
-
-    
-
-    
-
-    /**
-     * Associative array for storing property values
-     *
-     * @var mixed[]
-     */
-    protected $container = [];
-
-    /**
-     * Constructor
-     *
-     * @param mixed[] $data Associated array of property values
-     *                      initializing the model
-     */
-    public function __construct(array $data = null)
-    {
-    }
-
-    /**
-     * Show all the invalid properties with reasons.
-     *
-     * @return array invalid properties with reasons
-     */
-    public function listInvalidProperties()
-    {
-        $invalidProperties = parent::listInvalidProperties();
-
-        return $invalidProperties;
-    }
-
-    /**
-     * Validate all the properties in the model
-     * return true if all passed
-     *
-     * @return bool True if all properties are valid
-     */
-    public function valid()
-    {
-        return count($this->listInvalidProperties()) === 0;
-    }
-
-    /**
-     * Returns true if offset exists. False otherwise.
-     *
-     * @param integer $offset Offset
-     *
-     * @return boolean
-     */
-    public function offsetExists($offset)
-    {
-        return isset($this->container[$offset]);
-    }
-
-    /**
-     * Gets offset.
-     *
-     * @param integer $offset Offset
-     *
-     * @return mixed
-     */
-    public function offsetGet($offset)
-    {
-        return isset($this->container[$offset]) ? $this->container[$offset] : null;
-    }
-
-    /**
-     * Sets value based on offset.
-     *
-     * @param integer $offset Offset
-     * @param mixed   $value  Value to be set
-     *
-     * @return void
-     */
-    public function offsetSet($offset, $value)
-    {
-        if (is_null($offset)) {
-            $this->container[] = $value;
-        } else {
-            $this->container[$offset] = $value;
-        }
-    }
-
-    /**
-     * Unsets offset.
-     *
-     * @param integer $offset Offset
-     *
-     * @return void
-     */
-    public function offsetUnset($offset)
-    {
-        unset($this->container[$offset]);
-    }
-
-    /**
-     * Gets the string presentation of the object
-     *
-     * @return string
-     */
-    public function __toString()
-    {
-        return json_encode(
-            ObjectSerializer::sanitizeForSerialization($this),
-            JSON_PRETTY_PRINT
-        );
-    }
-}
-
-
diff --git a/samples/client/petstore/php/OpenAPIClient-php/lib/Model/StringBooleanMap.php b/samples/client/petstore/php/OpenAPIClient-php/lib/Model/StringBooleanMap.php
deleted file mode 100644
index 41c50d10d6e9..000000000000
--- a/samples/client/petstore/php/OpenAPIClient-php/lib/Model/StringBooleanMap.php
+++ /dev/null
@@ -1,272 +0,0 @@
-<?php
-/**
- * StringBooleanMap
- *
- * PHP version 5
- *
- * @category Class
- * @package  OpenAPI\Client
- * @author   OpenAPI Generator team
- * @link     https://openapi-generator.tech
- */
-
-/**
- * OpenAPI Petstore
- *
- * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
- *
- * OpenAPI spec version: 1.0.0
- * 
- * Generated by: https://openapi-generator.tech
- * OpenAPI Generator version: 4.0.0-SNAPSHOT
- */
-
-/**
- * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
- * https://openapi-generator.tech
- * Do not edit the class manually.
- */
-
-namespace OpenAPI\Client\Model;
-
-use \ArrayAccess;
-use \OpenAPI\Client\ObjectSerializer;
-
-/**
- * StringBooleanMap Class Doc Comment
- *
- * @category Class
- * @package  OpenAPI\Client
- * @author   OpenAPI Generator team
- * @link     https://openapi-generator.tech
- */
-class StringBooleanMap implements ModelInterface, ArrayAccess
-{
-    const DISCRIMINATOR = null;
-
-    /**
-      * The original name of the model.
-      *
-      * @var string
-      */
-    protected static $openAPIModelName = 'StringBooleanMap';
-
-    /**
-      * Array of property to type mappings. Used for (de)serialization
-      *
-      * @var string[]
-      */
-    protected static $openAPITypes = [
-        
-    ];
-
-    /**
-      * Array of property to format mappings. Used for (de)serialization
-      *
-      * @var string[]
-      */
-    protected static $openAPIFormats = [
-        
-    ];
-
-    /**
-     * Array of property to type mappings. Used for (de)serialization
-     *
-     * @return array
-     */
-    public static function openAPITypes()
-    {
-        return self::$openAPITypes;
-    }
-
-    /**
-     * Array of property to format mappings. Used for (de)serialization
-     *
-     * @return array
-     */
-    public static function openAPIFormats()
-    {
-        return self::$openAPIFormats;
-    }
-
-    /**
-     * Array of attributes where the key is the local name,
-     * and the value is the original name
-     *
-     * @var string[]
-     */
-    protected static $attributeMap = [
-        
-    ];
-
-    /**
-     * Array of attributes to setter functions (for deserialization of responses)
-     *
-     * @var string[]
-     */
-    protected static $setters = [
-        
-    ];
-
-    /**
-     * Array of attributes to getter functions (for serialization of requests)
-     *
-     * @var string[]
-     */
-    protected static $getters = [
-        
-    ];
-
-    /**
-     * Array of attributes where the key is the local name,
-     * and the value is the original name
-     *
-     * @return array
-     */
-    public static function attributeMap()
-    {
-        return self::$attributeMap;
-    }
-
-    /**
-     * Array of attributes to setter functions (for deserialization of responses)
-     *
-     * @return array
-     */
-    public static function setters()
-    {
-        return self::$setters;
-    }
-
-    /**
-     * Array of attributes to getter functions (for serialization of requests)
-     *
-     * @return array
-     */
-    public static function getters()
-    {
-        return self::$getters;
-    }
-
-    /**
-     * The original name of the model.
-     *
-     * @return string
-     */
-    public function getModelName()
-    {
-        return self::$openAPIModelName;
-    }
-
-    
-
-    
-
-    /**
-     * Associative array for storing property values
-     *
-     * @var mixed[]
-     */
-    protected $container = [];
-
-    /**
-     * Constructor
-     *
-     * @param mixed[] $data Associated array of property values
-     *                      initializing the model
-     */
-    public function __construct(array $data = null)
-    {
-    }
-
-    /**
-     * Show all the invalid properties with reasons.
-     *
-     * @return array invalid properties with reasons
-     */
-    public function listInvalidProperties()
-    {
-        $invalidProperties = parent::listInvalidProperties();
-
-        return $invalidProperties;
-    }
-
-    /**
-     * Validate all the properties in the model
-     * return true if all passed
-     *
-     * @return bool True if all properties are valid
-     */
-    public function valid()
-    {
-        return count($this->listInvalidProperties()) === 0;
-    }
-
-    /**
-     * Returns true if offset exists. False otherwise.
-     *
-     * @param integer $offset Offset
-     *
-     * @return boolean
-     */
-    public function offsetExists($offset)
-    {
-        return isset($this->container[$offset]);
-    }
-
-    /**
-     * Gets offset.
-     *
-     * @param integer $offset Offset
-     *
-     * @return mixed
-     */
-    public function offsetGet($offset)
-    {
-        return isset($this->container[$offset]) ? $this->container[$offset] : null;
-    }
-
-    /**
-     * Sets value based on offset.
-     *
-     * @param integer $offset Offset
-     * @param mixed   $value  Value to be set
-     *
-     * @return void
-     */
-    public function offsetSet($offset, $value)
-    {
-        if (is_null($offset)) {
-            $this->container[] = $value;
-        } else {
-            $this->container[$offset] = $value;
-        }
-    }
-
-    /**
-     * Unsets offset.
-     *
-     * @param integer $offset Offset
-     *
-     * @return void
-     */
-    public function offsetUnset($offset)
-    {
-        unset($this->container[$offset]);
-    }
-
-    /**
-     * Gets the string presentation of the object
-     *
-     * @return string
-     */
-    public function __toString()
-    {
-        return json_encode(
-            ObjectSerializer::sanitizeForSerialization($this),
-            JSON_PRETTY_PRINT
-        );
-    }
-}
-
-
diff --git a/samples/client/petstore/php/OpenAPIClient-php/tests/ModelInheritanceTest.php b/samples/client/petstore/php/OpenAPIClient-php/tests/ModelInheritanceTest.php
index 8c78e5ae8da2..333b88bbedaa 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/tests/ModelInheritanceTest.php
+++ b/samples/client/petstore/php/OpenAPIClient-php/tests/ModelInheritanceTest.php
@@ -3,7 +3,6 @@
 namespace OpenAPI\Client;
 
 use OpenAPI\Client\Model\Animal;
-use OpenAPI\Client\Model\AnimalFarm;
 use OpenAPI\Client\Model\Cat;
 use OpenAPI\Client\Model\Dog;
 use PHPUnit\Framework\TestCase;
@@ -75,8 +74,8 @@ public function testDiscriminatorInitialization()
      */
     public function testArrayStuff()
     {
-        // create an AnimalFarm which is an object implementing the ArrayAccess interface
-        $farm = new AnimalFarm();
+        // create an array of Animal
+        $farm = array();
 
         // add some animals to the farm to make sure the ArrayAccess interface works
         $farm[] = new Dog();
diff --git a/samples/client/petstore/php/OpenAPIClient-php/tests/PetApiTest.php b/samples/client/petstore/php/OpenAPIClient-php/tests/PetApiTest.php
index 6f4781a7c371..9e7f1c54b3a9 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/tests/PetApiTest.php
+++ b/samples/client/petstore/php/OpenAPIClient-php/tests/PetApiTest.php
@@ -323,9 +323,8 @@ public function testDiscriminatorInitialization()
     // test if ArrayAccess interface works
     public function testArrayStuff()
     {
-        // create an AnimalFarm which is an object implementing the
-        // ArrayAccess interface
-        $farm = new Model\AnimalFarm();
+        // create an array of Animal
+        $farm = array();
 
         // add some animals to the farm to make sure the ArrayAccess
         // interface works
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/AdditionalPropertiesClass.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/AdditionalPropertiesClass.md
index b162fe9595fb..869cdcbb5d0c 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/AdditionalPropertiesClass.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/AdditionalPropertiesClass.md
@@ -6,6 +6,6 @@ Name | Type | Description | Notes
 **map_property** | **map[string,string]** |  | [optional] 
 **map_of_map_property** | [**map[string,map[string,string]]**](map.md) |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Animal.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Animal.md
index c57fbe8ea4aa..9ea562fe1449 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Animal.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Animal.md
@@ -6,6 +6,6 @@ Name | Type | Description | Notes
 **class_name** | **string** |  | 
 **color** | **string** |  | [optional] [default to 'red']
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/AnimalFarm.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/AnimalFarm.md
deleted file mode 100644
index df6bab21dae8..000000000000
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/AnimalFarm.md
+++ /dev/null
@@ -1,9 +0,0 @@
-# AnimalFarm
-
-## Properties
-Name | Type | Description | Notes
------------- | ------------- | ------------- | -------------
-
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
-
-
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ApiResponse.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ApiResponse.md
index 9d3511834227..d15f2dce2761 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ApiResponse.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ApiResponse.md
@@ -7,6 +7,6 @@ Name | Type | Description | Notes
 **type** | **string** |  | [optional] 
 **message** | **string** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ArrayOfArrayOfNumberOnly.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ArrayOfArrayOfNumberOnly.md
index 7831e1898882..aed435112f98 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ArrayOfArrayOfNumberOnly.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ArrayOfArrayOfNumberOnly.md
@@ -5,6 +5,6 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **array_array_number** | [**float[][]**](array.md) |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ArrayOfNumberOnly.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ArrayOfNumberOnly.md
index a32607e42012..949b88ded0a8 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ArrayOfNumberOnly.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ArrayOfNumberOnly.md
@@ -5,6 +5,6 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **array_number** | **float[]** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ArrayTest.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ArrayTest.md
index 2ef4e3785e4c..eef7ab1b5b71 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ArrayTest.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ArrayTest.md
@@ -7,6 +7,6 @@ Name | Type | Description | Notes
 **array_array_of_integer** | [**int[][]**](array.md) |  | [optional] 
 **array_array_of_model** | [**\OpenAPI\Client\Model\ReadOnlyFirst[][]**](array.md) |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Body.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Body.md
deleted file mode 100644
index c3cbc85ee899..000000000000
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Body.md
+++ /dev/null
@@ -1,11 +0,0 @@
-# Body
-
-## Properties
-Name | Type | Description | Notes
------------- | ------------- | ------------- | -------------
-**name** | **string** | Updated name of the pet | [optional] 
-**status** | **string** | Updated status of the pet | [optional] 
-
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
-
-
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Body1.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Body1.md
deleted file mode 100644
index 8f063c22f08b..000000000000
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Body1.md
+++ /dev/null
@@ -1,11 +0,0 @@
-# Body1
-
-## Properties
-Name | Type | Description | Notes
------------- | ------------- | ------------- | -------------
-**additional_metadata** | **string** | Additional data to pass to server | [optional] 
-**file** | [**\SplFileObject**](\SplFileObject.md) | file to upload | [optional] 
-
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
-
-
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Body2.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Body2.md
deleted file mode 100644
index 5afe5ce7313c..000000000000
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Body2.md
+++ /dev/null
@@ -1,11 +0,0 @@
-# Body2
-
-## Properties
-Name | Type | Description | Notes
------------- | ------------- | ------------- | -------------
-**enum_form_string_array** | **string[]** | Form parameter enum test (string array) | [optional] 
-**enum_form_string** | **string** | Form parameter enum test (string) | [optional] [default to '-efg']
-
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
-
-
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Body3.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Body3.md
deleted file mode 100644
index fe21931b97de..000000000000
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Body3.md
+++ /dev/null
@@ -1,23 +0,0 @@
-# Body3
-
-## Properties
-Name | Type | Description | Notes
------------- | ------------- | ------------- | -------------
-**integer** | **int** | None | [optional] 
-**int32** | **int** | None | [optional] 
-**int64** | **int** | None | [optional] 
-**number** | **float** | None | 
-**float** | **float** | None | [optional] 
-**double** | **double** | None | 
-**string** | **string** | None | [optional] 
-**pattern_without_delimiter** | **string** | None | 
-**byte** | **string** | None | 
-**binary** | [**\SplFileObject**](\SplFileObject.md) | None | [optional] 
-**date** | [**\DateTime**](\DateTime.md) | None | [optional] 
-**date_time** | [**\DateTime**](\DateTime.md) | None | [optional] 
-**password** | **string** | None | [optional] 
-**callback** | **string** | None | [optional] 
-
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
-
-
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Body4.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Body4.md
deleted file mode 100644
index f583ce67bec3..000000000000
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Body4.md
+++ /dev/null
@@ -1,11 +0,0 @@
-# Body4
-
-## Properties
-Name | Type | Description | Notes
------------- | ------------- | ------------- | -------------
-**param** | **string** | field1 | 
-**param2** | **string** | field2 | 
-
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
-
-
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Body5.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Body5.md
deleted file mode 100644
index bb39fd91717f..000000000000
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Body5.md
+++ /dev/null
@@ -1,11 +0,0 @@
-# Body5
-
-## Properties
-Name | Type | Description | Notes
------------- | ------------- | ------------- | -------------
-**additional_metadata** | **string** | Additional data to pass to server | [optional] 
-**required_file** | [**\SplFileObject**](\SplFileObject.md) | file to upload | 
-
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
-
-
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Capitalization.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Capitalization.md
index 0fcc9e873d71..c9c90ba25023 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Capitalization.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Capitalization.md
@@ -10,6 +10,6 @@ Name | Type | Description | Notes
 **sca_eth_flow_points** | **string** |  | [optional] 
 **att_name** | **string** | Name of the pet | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Cat.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Cat.md
index 8d30565d014e..88ffac3e31b9 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Cat.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Cat.md
@@ -5,6 +5,6 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **declawed** | **bool** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Category.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Category.md
index 369f811a4eb8..a275eb329959 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Category.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Category.md
@@ -6,6 +6,6 @@ Name | Type | Description | Notes
 **id** | **int** |  | [optional] 
 **name** | **string** |  | [default to 'default-name']
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ClassModel.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ClassModel.md
index 3ad025b6ed3a..a017385eea3a 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ClassModel.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ClassModel.md
@@ -5,6 +5,6 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **_class** | **string** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Client.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Client.md
index f6047a624710..e8371167c519 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Client.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Client.md
@@ -5,6 +5,6 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **client** | **string** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Dog.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Dog.md
index 3c04bdf4cf70..262a24033187 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Dog.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Dog.md
@@ -5,6 +5,6 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **breed** | **string** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/EnumArrays.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/EnumArrays.md
index ebaedecdae0e..5d15a764ed16 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/EnumArrays.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/EnumArrays.md
@@ -6,6 +6,6 @@ Name | Type | Description | Notes
 **just_symbol** | **string** |  | [optional] 
 **array_enum** | **string[]** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/EnumClass.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/EnumClass.md
index 67f017becd0c..7f5dd450d1c9 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/EnumClass.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/EnumClass.md
@@ -4,6 +4,6 @@
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/EnumTest.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/EnumTest.md
index ccb11a3ce922..db30f3109248 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/EnumTest.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/EnumTest.md
@@ -12,6 +12,6 @@ Name | Type | Description | Notes
 **outer_enum_default_value** | [**\OpenAPI\Client\Model\OuterEnumDefaultValue**](OuterEnumDefaultValue.md) |  | [optional] 
 **outer_enum_integer_default_value** | [**\OpenAPI\Client\Model\OuterEnumIntegerDefaultValue**](OuterEnumIntegerDefaultValue.md) |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/File.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/File.md
index bd3963bca31d..92110178d1c7 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/File.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/File.md
@@ -5,6 +5,6 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **source_uri** | **string** | Test capitalization | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/FileSchemaTestClass.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/FileSchemaTestClass.md
index af7d650390cb..1eb5cc96dcf2 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/FileSchemaTestClass.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/FileSchemaTestClass.md
@@ -6,6 +6,6 @@ Name | Type | Description | Notes
 **file** | [**\OpenAPI\Client\Model\File**](File.md) |  | [optional] 
 **files** | [**\OpenAPI\Client\Model\File[]**](File.md) |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Foo.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Foo.md
index ee5ddff7206b..6b53d1fc7a1f 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Foo.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Foo.md
@@ -5,6 +5,6 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **bar** | **string** |  | [optional] [default to 'bar']
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/FormatTest.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/FormatTest.md
index c27cc2cf2099..3f9c97d22ca3 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/FormatTest.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/FormatTest.md
@@ -19,6 +19,6 @@ Name | Type | Description | Notes
 **pattern_with_digits** | **string** | A string that is a 10 digit number. Can have leading zeros. | [optional] 
 **pattern_with_digits_and_delimiter** | **string** | A string starting with &#39;image_&#39; (case insensitive) and one to three digits following i.e. Image_01. | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/HasOnlyReadOnly.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/HasOnlyReadOnly.md
index 5e64572b781d..92f291a68b1b 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/HasOnlyReadOnly.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/HasOnlyReadOnly.md
@@ -6,6 +6,6 @@ Name | Type | Description | Notes
 **bar** | **string** |  | [optional] 
 **foo** | **string** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/HealthCheckResult.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/HealthCheckResult.md
index 9126cec80ae5..e2e0850aaf83 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/HealthCheckResult.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/HealthCheckResult.md
@@ -5,6 +5,6 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **nullable_message** | **string** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/InlineObject.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/InlineObject.md
index 101275879be3..5335ba8e6ee6 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/InlineObject.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/InlineObject.md
@@ -6,6 +6,6 @@ Name | Type | Description | Notes
 **name** | **string** | Updated name of the pet | [optional] 
 **status** | **string** | Updated status of the pet | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/InlineObject1.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/InlineObject1.md
index dc428e8ea6c5..7d591fdacf2e 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/InlineObject1.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/InlineObject1.md
@@ -6,6 +6,6 @@ Name | Type | Description | Notes
 **additional_metadata** | **string** | Additional data to pass to server | [optional] 
 **file** | [**\SplFileObject**](\SplFileObject.md) | file to upload | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/InlineObject2.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/InlineObject2.md
index 7e2ee7c9570c..e66940de4547 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/InlineObject2.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/InlineObject2.md
@@ -6,6 +6,6 @@ Name | Type | Description | Notes
 **enum_form_string_array** | **string[]** | Form parameter enum test (string array) | [optional] 
 **enum_form_string** | **string** | Form parameter enum test (string) | [optional] [default to '-efg']
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/InlineObject3.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/InlineObject3.md
index cef75b28262b..6956fa86337c 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/InlineObject3.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/InlineObject3.md
@@ -18,6 +18,6 @@ Name | Type | Description | Notes
 **password** | **string** | None | [optional] 
 **callback** | **string** | None | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/InlineObject4.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/InlineObject4.md
index 6675b7f47ce7..cf156a420b76 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/InlineObject4.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/InlineObject4.md
@@ -6,6 +6,6 @@ Name | Type | Description | Notes
 **param** | **string** | field1 | 
 **param2** | **string** | field2 | 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/InlineObject5.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/InlineObject5.md
index d1d27f7cc65f..4ee8228bfeb1 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/InlineObject5.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/InlineObject5.md
@@ -6,6 +6,6 @@ Name | Type | Description | Notes
 **additional_metadata** | **string** | Additional data to pass to server | [optional] 
 **required_file** | [**\SplFileObject**](\SplFileObject.md) | file to upload | 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/InlineResponseDefault.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/InlineResponseDefault.md
index 9f25c169f64e..7dacf2b0ac48 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/InlineResponseDefault.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/InlineResponseDefault.md
@@ -5,6 +5,6 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **string** | [**\OpenAPI\Client\Model\Foo**](Foo.md) |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/MapTest.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/MapTest.md
index e2a51f7ddcd3..47c6c76656ae 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/MapTest.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/MapTest.md
@@ -8,6 +8,6 @@ Name | Type | Description | Notes
 **direct_map** | **map[string,bool]** |  | [optional] 
 **indirect_map** | **map[string,bool]** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/MixedPropertiesAndAdditionalPropertiesClass.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/MixedPropertiesAndAdditionalPropertiesClass.md
index a34e2f6d129f..4216dd89086d 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/MixedPropertiesAndAdditionalPropertiesClass.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/MixedPropertiesAndAdditionalPropertiesClass.md
@@ -7,6 +7,6 @@ Name | Type | Description | Notes
 **date_time** | [**\DateTime**](\DateTime.md) |  | [optional] 
 **map** | [**map[string,\OpenAPI\Client\Model\Animal]**](Animal.md) |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Model200Response.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Model200Response.md
index ebbea5c68af1..c0b33d0cd435 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Model200Response.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Model200Response.md
@@ -6,6 +6,6 @@ Name | Type | Description | Notes
 **name** | **int** |  | [optional] 
 **class** | **string** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ModelList.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ModelList.md
index e18ba4e123df..3075a1fcff98 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ModelList.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ModelList.md
@@ -5,6 +5,6 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **_123_list** | **string** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ModelReturn.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ModelReturn.md
index 9adb62e1e121..1fddf1b80fdc 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ModelReturn.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ModelReturn.md
@@ -5,6 +5,6 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **return** | **int** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Name.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Name.md
index 4565647e1ef6..5e75eddd5916 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Name.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Name.md
@@ -8,6 +8,6 @@ Name | Type | Description | Notes
 **property** | **string** |  | [optional] 
 **_123_number** | **int** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/NumberOnly.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/NumberOnly.md
index 93a0fde7b931..8ee0abc05cc2 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/NumberOnly.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/NumberOnly.md
@@ -5,6 +5,6 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **just_number** | **float** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Order.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Order.md
index ddae5cc2b571..5edcb2fa9f38 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Order.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Order.md
@@ -10,6 +10,6 @@ Name | Type | Description | Notes
 **status** | **string** | Order Status | [optional] 
 **complete** | **bool** |  | [optional] [default to false]
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/OuterComposite.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/OuterComposite.md
index e79675213950..ef7eab62642e 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/OuterComposite.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/OuterComposite.md
@@ -7,6 +7,6 @@ Name | Type | Description | Notes
 **my_string** | **string** |  | [optional] 
 **my_boolean** | **bool** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/OuterEnum.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/OuterEnum.md
index 06d413b01680..75effd8bb072 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/OuterEnum.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/OuterEnum.md
@@ -4,6 +4,6 @@
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/OuterEnumDefaultValue.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/OuterEnumDefaultValue.md
index 1487a7103934..73bd71bcacfa 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/OuterEnumDefaultValue.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/OuterEnumDefaultValue.md
@@ -4,6 +4,6 @@
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/OuterEnumInteger.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/OuterEnumInteger.md
index 8be15eee6a2c..e0cb2f421243 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/OuterEnumInteger.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/OuterEnumInteger.md
@@ -4,6 +4,6 @@
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/OuterEnumIntegerDefaultValue.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/OuterEnumIntegerDefaultValue.md
index 27d962f106e1..e87ad2ac26de 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/OuterEnumIntegerDefaultValue.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/OuterEnumIntegerDefaultValue.md
@@ -4,6 +4,6 @@
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Pet.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Pet.md
index 2d281a3c4990..554039289fa4 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Pet.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Pet.md
@@ -10,6 +10,6 @@ Name | Type | Description | Notes
 **tags** | [**\OpenAPI\Client\Model\Tag[]**](Tag.md) |  | [optional] 
 **status** | **string** | pet status in the store | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ReadOnlyFirst.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ReadOnlyFirst.md
index 90662a00cf32..767505b24e65 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ReadOnlyFirst.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/ReadOnlyFirst.md
@@ -6,6 +6,6 @@ Name | Type | Description | Notes
 **bar** | **string** |  | [optional] 
 **baz** | **string** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/SpecialModelName.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/SpecialModelName.md
index 022ee19169ce..58c1b2d80e80 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/SpecialModelName.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/SpecialModelName.md
@@ -5,6 +5,6 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **special_property_name** | **int** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/StringBooleanMap.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/StringBooleanMap.md
deleted file mode 100644
index 7abf11ec68b1..000000000000
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/StringBooleanMap.md
+++ /dev/null
@@ -1,9 +0,0 @@
-# StringBooleanMap
-
-## Properties
-Name | Type | Description | Notes
------------- | ------------- | ------------- | -------------
-
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
-
-
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Tag.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Tag.md
index 15ec3e0a91df..78ae82d19ef9 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Tag.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/Tag.md
@@ -6,6 +6,6 @@ Name | Type | Description | Notes
 **id** | **int** |  | [optional] 
 **name** | **string** |  | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/User.md b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/User.md
index ff278fd4889e..d436a4653dde 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/User.md
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/docs/Model/User.md
@@ -12,6 +12,6 @@ Name | Type | Description | Notes
 **phone** | **string** |  | [optional] 
 **user_status** | **int** | User Status | [optional] 
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
 
 
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/lib/Model/AnimalFarm.php b/samples/openapi3/client/petstore/php/OpenAPIClient-php/lib/Model/AnimalFarm.php
deleted file mode 100644
index f5274027ff1c..000000000000
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/lib/Model/AnimalFarm.php
+++ /dev/null
@@ -1,272 +0,0 @@
-<?php
-/**
- * AnimalFarm
- *
- * PHP version 5
- *
- * @category Class
- * @package  OpenAPI\Client
- * @author   OpenAPI Generator team
- * @link     https://openapi-generator.tech
- */
-
-/**
- * OpenAPI Petstore
- *
- * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
- *
- * OpenAPI spec version: 1.0.0
- * 
- * Generated by: https://openapi-generator.tech
- * OpenAPI Generator version: 4.0.0-SNAPSHOT
- */
-
-/**
- * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
- * https://openapi-generator.tech
- * Do not edit the class manually.
- */
-
-namespace OpenAPI\Client\Model;
-
-use \ArrayAccess;
-use \OpenAPI\Client\ObjectSerializer;
-
-/**
- * AnimalFarm Class Doc Comment
- *
- * @category Class
- * @package  OpenAPI\Client
- * @author   OpenAPI Generator team
- * @link     https://openapi-generator.tech
- */
-class AnimalFarm implements ModelInterface, ArrayAccess
-{
-    const DISCRIMINATOR = null;
-
-    /**
-      * The original name of the model.
-      *
-      * @var string
-      */
-    protected static $openAPIModelName = 'AnimalFarm';
-
-    /**
-      * Array of property to type mappings. Used for (de)serialization
-      *
-      * @var string[]
-      */
-    protected static $openAPITypes = [
-        
-    ];
-
-    /**
-      * Array of property to format mappings. Used for (de)serialization
-      *
-      * @var string[]
-      */
-    protected static $openAPIFormats = [
-        
-    ];
-
-    /**
-     * Array of property to type mappings. Used for (de)serialization
-     *
-     * @return array
-     */
-    public static function openAPITypes()
-    {
-        return self::$openAPITypes;
-    }
-
-    /**
-     * Array of property to format mappings. Used for (de)serialization
-     *
-     * @return array
-     */
-    public static function openAPIFormats()
-    {
-        return self::$openAPIFormats;
-    }
-
-    /**
-     * Array of attributes where the key is the local name,
-     * and the value is the original name
-     *
-     * @var string[]
-     */
-    protected static $attributeMap = [
-        
-    ];
-
-    /**
-     * Array of attributes to setter functions (for deserialization of responses)
-     *
-     * @var string[]
-     */
-    protected static $setters = [
-        
-    ];
-
-    /**
-     * Array of attributes to getter functions (for serialization of requests)
-     *
-     * @var string[]
-     */
-    protected static $getters = [
-        
-    ];
-
-    /**
-     * Array of attributes where the key is the local name,
-     * and the value is the original name
-     *
-     * @return array
-     */
-    public static function attributeMap()
-    {
-        return self::$attributeMap;
-    }
-
-    /**
-     * Array of attributes to setter functions (for deserialization of responses)
-     *
-     * @return array
-     */
-    public static function setters()
-    {
-        return self::$setters;
-    }
-
-    /**
-     * Array of attributes to getter functions (for serialization of requests)
-     *
-     * @return array
-     */
-    public static function getters()
-    {
-        return self::$getters;
-    }
-
-    /**
-     * The original name of the model.
-     *
-     * @return string
-     */
-    public function getModelName()
-    {
-        return self::$openAPIModelName;
-    }
-
-    
-
-    
-
-    /**
-     * Associative array for storing property values
-     *
-     * @var mixed[]
-     */
-    protected $container = [];
-
-    /**
-     * Constructor
-     *
-     * @param mixed[] $data Associated array of property values
-     *                      initializing the model
-     */
-    public function __construct(array $data = null)
-    {
-    }
-
-    /**
-     * Show all the invalid properties with reasons.
-     *
-     * @return array invalid properties with reasons
-     */
-    public function listInvalidProperties()
-    {
-        $invalidProperties = parent::listInvalidProperties();
-
-        return $invalidProperties;
-    }
-
-    /**
-     * Validate all the properties in the model
-     * return true if all passed
-     *
-     * @return bool True if all properties are valid
-     */
-    public function valid()
-    {
-        return count($this->listInvalidProperties()) === 0;
-    }
-
-    /**
-     * Returns true if offset exists. False otherwise.
-     *
-     * @param integer $offset Offset
-     *
-     * @return boolean
-     */
-    public function offsetExists($offset)
-    {
-        return isset($this->container[$offset]);
-    }
-
-    /**
-     * Gets offset.
-     *
-     * @param integer $offset Offset
-     *
-     * @return mixed
-     */
-    public function offsetGet($offset)
-    {
-        return isset($this->container[$offset]) ? $this->container[$offset] : null;
-    }
-
-    /**
-     * Sets value based on offset.
-     *
-     * @param integer $offset Offset
-     * @param mixed   $value  Value to be set
-     *
-     * @return void
-     */
-    public function offsetSet($offset, $value)
-    {
-        if (is_null($offset)) {
-            $this->container[] = $value;
-        } else {
-            $this->container[$offset] = $value;
-        }
-    }
-
-    /**
-     * Unsets offset.
-     *
-     * @param integer $offset Offset
-     *
-     * @return void
-     */
-    public function offsetUnset($offset)
-    {
-        unset($this->container[$offset]);
-    }
-
-    /**
-     * Gets the string presentation of the object
-     *
-     * @return string
-     */
-    public function __toString()
-    {
-        return json_encode(
-            ObjectSerializer::sanitizeForSerialization($this),
-            JSON_PRETTY_PRINT
-        );
-    }
-}
-
-
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/lib/Model/Body.php b/samples/openapi3/client/petstore/php/OpenAPIClient-php/lib/Model/Body.php
deleted file mode 100644
index 964b21e82520..000000000000
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/lib/Model/Body.php
+++ /dev/null
@@ -1,327 +0,0 @@
-<?php
-/**
- * Body
- *
- * PHP version 5
- *
- * @category Class
- * @package  OpenAPI\Client
- * @author   OpenAPI Generator team
- * @link     https://openapi-generator.tech
- */
-
-/**
- * OpenAPI Petstore
- *
- * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
- *
- * OpenAPI spec version: 1.0.0
- * 
- * Generated by: https://openapi-generator.tech
- * OpenAPI Generator version: 4.0.0-SNAPSHOT
- */
-
-/**
- * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
- * https://openapi-generator.tech
- * Do not edit the class manually.
- */
-
-namespace OpenAPI\Client\Model;
-
-use \ArrayAccess;
-use \OpenAPI\Client\ObjectSerializer;
-
-/**
- * Body Class Doc Comment
- *
- * @category Class
- * @package  OpenAPI\Client
- * @author   OpenAPI Generator team
- * @link     https://openapi-generator.tech
- */
-class Body implements ModelInterface, ArrayAccess
-{
-    const DISCRIMINATOR = null;
-
-    /**
-      * The original name of the model.
-      *
-      * @var string
-      */
-    protected static $openAPIModelName = 'body';
-
-    /**
-      * Array of property to type mappings. Used for (de)serialization
-      *
-      * @var string[]
-      */
-    protected static $openAPITypes = [
-        'name' => 'string',
-        'status' => 'string'
-    ];
-
-    /**
-      * Array of property to format mappings. Used for (de)serialization
-      *
-      * @var string[]
-      */
-    protected static $openAPIFormats = [
-        'name' => null,
-        'status' => null
-    ];
-
-    /**
-     * Array of property to type mappings. Used for (de)serialization
-     *
-     * @return array
-     */
-    public static function openAPITypes()
-    {
-        return self::$openAPITypes;
-    }
-
-    /**
-     * Array of property to format mappings. Used for (de)serialization
-     *
-     * @return array
-     */
-    public static function openAPIFormats()
-    {
-        return self::$openAPIFormats;
-    }
-
-    /**
-     * Array of attributes where the key is the local name,
-     * and the value is the original name
-     *
-     * @var string[]
-     */
-    protected static $attributeMap = [
-        'name' => 'name',
-        'status' => 'status'
-    ];
-
-    /**
-     * Array of attributes to setter functions (for deserialization of responses)
-     *
-     * @var string[]
-     */
-    protected static $setters = [
-        'name' => 'setName',
-        'status' => 'setStatus'
-    ];
-
-    /**
-     * Array of attributes to getter functions (for serialization of requests)
-     *
-     * @var string[]
-     */
-    protected static $getters = [
-        'name' => 'getName',
-        'status' => 'getStatus'
-    ];
-
-    /**
-     * Array of attributes where the key is the local name,
-     * and the value is the original name
-     *
-     * @return array
-     */
-    public static function attributeMap()
-    {
-        return self::$attributeMap;
-    }
-
-    /**
-     * Array of attributes to setter functions (for deserialization of responses)
-     *
-     * @return array
-     */
-    public static function setters()
-    {
-        return self::$setters;
-    }
-
-    /**
-     * Array of attributes to getter functions (for serialization of requests)
-     *
-     * @return array
-     */
-    public static function getters()
-    {
-        return self::$getters;
-    }
-
-    /**
-     * The original name of the model.
-     *
-     * @return string
-     */
-    public function getModelName()
-    {
-        return self::$openAPIModelName;
-    }
-
-    
-
-    
-
-    /**
-     * Associative array for storing property values
-     *
-     * @var mixed[]
-     */
-    protected $container = [];
-
-    /**
-     * Constructor
-     *
-     * @param mixed[] $data Associated array of property values
-     *                      initializing the model
-     */
-    public function __construct(array $data = null)
-    {
-        $this->container['name'] = isset($data['name']) ? $data['name'] : null;
-        $this->container['status'] = isset($data['status']) ? $data['status'] : null;
-    }
-
-    /**
-     * Show all the invalid properties with reasons.
-     *
-     * @return array invalid properties with reasons
-     */
-    public function listInvalidProperties()
-    {
-        $invalidProperties = [];
-
-        return $invalidProperties;
-    }
-
-    /**
-     * Validate all the properties in the model
-     * return true if all passed
-     *
-     * @return bool True if all properties are valid
-     */
-    public function valid()
-    {
-        return count($this->listInvalidProperties()) === 0;
-    }
-
-
-    /**
-     * Gets name
-     *
-     * @return string|null
-     */
-    public function getName()
-    {
-        return $this->container['name'];
-    }
-
-    /**
-     * Sets name
-     *
-     * @param string|null $name Updated name of the pet
-     *
-     * @return $this
-     */
-    public function setName($name)
-    {
-        $this->container['name'] = $name;
-
-        return $this;
-    }
-
-    /**
-     * Gets status
-     *
-     * @return string|null
-     */
-    public function getStatus()
-    {
-        return $this->container['status'];
-    }
-
-    /**
-     * Sets status
-     *
-     * @param string|null $status Updated status of the pet
-     *
-     * @return $this
-     */
-    public function setStatus($status)
-    {
-        $this->container['status'] = $status;
-
-        return $this;
-    }
-    /**
-     * Returns true if offset exists. False otherwise.
-     *
-     * @param integer $offset Offset
-     *
-     * @return boolean
-     */
-    public function offsetExists($offset)
-    {
-        return isset($this->container[$offset]);
-    }
-
-    /**
-     * Gets offset.
-     *
-     * @param integer $offset Offset
-     *
-     * @return mixed
-     */
-    public function offsetGet($offset)
-    {
-        return isset($this->container[$offset]) ? $this->container[$offset] : null;
-    }
-
-    /**
-     * Sets value based on offset.
-     *
-     * @param integer $offset Offset
-     * @param mixed   $value  Value to be set
-     *
-     * @return void
-     */
-    public function offsetSet($offset, $value)
-    {
-        if (is_null($offset)) {
-            $this->container[] = $value;
-        } else {
-            $this->container[$offset] = $value;
-        }
-    }
-
-    /**
-     * Unsets offset.
-     *
-     * @param integer $offset Offset
-     *
-     * @return void
-     */
-    public function offsetUnset($offset)
-    {
-        unset($this->container[$offset]);
-    }
-
-    /**
-     * Gets the string presentation of the object
-     *
-     * @return string
-     */
-    public function __toString()
-    {
-        return json_encode(
-            ObjectSerializer::sanitizeForSerialization($this),
-            JSON_PRETTY_PRINT
-        );
-    }
-}
-
-
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/lib/Model/Body1.php b/samples/openapi3/client/petstore/php/OpenAPIClient-php/lib/Model/Body1.php
deleted file mode 100644
index fb56f7b3b8e3..000000000000
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/lib/Model/Body1.php
+++ /dev/null
@@ -1,327 +0,0 @@
-<?php
-/**
- * Body1
- *
- * PHP version 5
- *
- * @category Class
- * @package  OpenAPI\Client
- * @author   OpenAPI Generator team
- * @link     https://openapi-generator.tech
- */
-
-/**
- * OpenAPI Petstore
- *
- * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
- *
- * OpenAPI spec version: 1.0.0
- * 
- * Generated by: https://openapi-generator.tech
- * OpenAPI Generator version: 4.0.0-SNAPSHOT
- */
-
-/**
- * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
- * https://openapi-generator.tech
- * Do not edit the class manually.
- */
-
-namespace OpenAPI\Client\Model;
-
-use \ArrayAccess;
-use \OpenAPI\Client\ObjectSerializer;
-
-/**
- * Body1 Class Doc Comment
- *
- * @category Class
- * @package  OpenAPI\Client
- * @author   OpenAPI Generator team
- * @link     https://openapi-generator.tech
- */
-class Body1 implements ModelInterface, ArrayAccess
-{
-    const DISCRIMINATOR = null;
-
-    /**
-      * The original name of the model.
-      *
-      * @var string
-      */
-    protected static $openAPIModelName = 'body_1';
-
-    /**
-      * Array of property to type mappings. Used for (de)serialization
-      *
-      * @var string[]
-      */
-    protected static $openAPITypes = [
-        'additional_metadata' => 'string',
-        'file' => '\SplFileObject'
-    ];
-
-    /**
-      * Array of property to format mappings. Used for (de)serialization
-      *
-      * @var string[]
-      */
-    protected static $openAPIFormats = [
-        'additional_metadata' => null,
-        'file' => 'binary'
-    ];
-
-    /**
-     * Array of property to type mappings. Used for (de)serialization
-     *
-     * @return array
-     */
-    public static function openAPITypes()
-    {
-        return self::$openAPITypes;
-    }
-
-    /**
-     * Array of property to format mappings. Used for (de)serialization
-     *
-     * @return array
-     */
-    public static function openAPIFormats()
-    {
-        return self::$openAPIFormats;
-    }
-
-    /**
-     * Array of attributes where the key is the local name,
-     * and the value is the original name
-     *
-     * @var string[]
-     */
-    protected static $attributeMap = [
-        'additional_metadata' => 'additionalMetadata',
-        'file' => 'file'
-    ];
-
-    /**
-     * Array of attributes to setter functions (for deserialization of responses)
-     *
-     * @var string[]
-     */
-    protected static $setters = [
-        'additional_metadata' => 'setAdditionalMetadata',
-        'file' => 'setFile'
-    ];
-
-    /**
-     * Array of attributes to getter functions (for serialization of requests)
-     *
-     * @var string[]
-     */
-    protected static $getters = [
-        'additional_metadata' => 'getAdditionalMetadata',
-        'file' => 'getFile'
-    ];
-
-    /**
-     * Array of attributes where the key is the local name,
-     * and the value is the original name
-     *
-     * @return array
-     */
-    public static function attributeMap()
-    {
-        return self::$attributeMap;
-    }
-
-    /**
-     * Array of attributes to setter functions (for deserialization of responses)
-     *
-     * @return array
-     */
-    public static function setters()
-    {
-        return self::$setters;
-    }
-
-    /**
-     * Array of attributes to getter functions (for serialization of requests)
-     *
-     * @return array
-     */
-    public static function getters()
-    {
-        return self::$getters;
-    }
-
-    /**
-     * The original name of the model.
-     *
-     * @return string
-     */
-    public function getModelName()
-    {
-        return self::$openAPIModelName;
-    }
-
-    
-
-    
-
-    /**
-     * Associative array for storing property values
-     *
-     * @var mixed[]
-     */
-    protected $container = [];
-
-    /**
-     * Constructor
-     *
-     * @param mixed[] $data Associated array of property values
-     *                      initializing the model
-     */
-    public function __construct(array $data = null)
-    {
-        $this->container['additional_metadata'] = isset($data['additional_metadata']) ? $data['additional_metadata'] : null;
-        $this->container['file'] = isset($data['file']) ? $data['file'] : null;
-    }
-
-    /**
-     * Show all the invalid properties with reasons.
-     *
-     * @return array invalid properties with reasons
-     */
-    public function listInvalidProperties()
-    {
-        $invalidProperties = [];
-
-        return $invalidProperties;
-    }
-
-    /**
-     * Validate all the properties in the model
-     * return true if all passed
-     *
-     * @return bool True if all properties are valid
-     */
-    public function valid()
-    {
-        return count($this->listInvalidProperties()) === 0;
-    }
-
-
-    /**
-     * Gets additional_metadata
-     *
-     * @return string|null
-     */
-    public function getAdditionalMetadata()
-    {
-        return $this->container['additional_metadata'];
-    }
-
-    /**
-     * Sets additional_metadata
-     *
-     * @param string|null $additional_metadata Additional data to pass to server
-     *
-     * @return $this
-     */
-    public function setAdditionalMetadata($additional_metadata)
-    {
-        $this->container['additional_metadata'] = $additional_metadata;
-
-        return $this;
-    }
-
-    /**
-     * Gets file
-     *
-     * @return \SplFileObject|null
-     */
-    public function getFile()
-    {
-        return $this->container['file'];
-    }
-
-    /**
-     * Sets file
-     *
-     * @param \SplFileObject|null $file file to upload
-     *
-     * @return $this
-     */
-    public function setFile($file)
-    {
-        $this->container['file'] = $file;
-
-        return $this;
-    }
-    /**
-     * Returns true if offset exists. False otherwise.
-     *
-     * @param integer $offset Offset
-     *
-     * @return boolean
-     */
-    public function offsetExists($offset)
-    {
-        return isset($this->container[$offset]);
-    }
-
-    /**
-     * Gets offset.
-     *
-     * @param integer $offset Offset
-     *
-     * @return mixed
-     */
-    public function offsetGet($offset)
-    {
-        return isset($this->container[$offset]) ? $this->container[$offset] : null;
-    }
-
-    /**
-     * Sets value based on offset.
-     *
-     * @param integer $offset Offset
-     * @param mixed   $value  Value to be set
-     *
-     * @return void
-     */
-    public function offsetSet($offset, $value)
-    {
-        if (is_null($offset)) {
-            $this->container[] = $value;
-        } else {
-            $this->container[$offset] = $value;
-        }
-    }
-
-    /**
-     * Unsets offset.
-     *
-     * @param integer $offset Offset
-     *
-     * @return void
-     */
-    public function offsetUnset($offset)
-    {
-        unset($this->container[$offset]);
-    }
-
-    /**
-     * Gets the string presentation of the object
-     *
-     * @return string
-     */
-    public function __toString()
-    {
-        return json_encode(
-            ObjectSerializer::sanitizeForSerialization($this),
-            JSON_PRETTY_PRINT
-        );
-    }
-}
-
-
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/lib/Model/Body2.php b/samples/openapi3/client/petstore/php/OpenAPIClient-php/lib/Model/Body2.php
deleted file mode 100644
index f8ea16ea0d27..000000000000
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/lib/Model/Body2.php
+++ /dev/null
@@ -1,385 +0,0 @@
-<?php
-/**
- * Body2
- *
- * PHP version 5
- *
- * @category Class
- * @package  OpenAPI\Client
- * @author   OpenAPI Generator team
- * @link     https://openapi-generator.tech
- */
-
-/**
- * OpenAPI Petstore
- *
- * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
- *
- * OpenAPI spec version: 1.0.0
- * 
- * Generated by: https://openapi-generator.tech
- * OpenAPI Generator version: 4.0.0-SNAPSHOT
- */
-
-/**
- * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
- * https://openapi-generator.tech
- * Do not edit the class manually.
- */
-
-namespace OpenAPI\Client\Model;
-
-use \ArrayAccess;
-use \OpenAPI\Client\ObjectSerializer;
-
-/**
- * Body2 Class Doc Comment
- *
- * @category Class
- * @package  OpenAPI\Client
- * @author   OpenAPI Generator team
- * @link     https://openapi-generator.tech
- */
-class Body2 implements ModelInterface, ArrayAccess
-{
-    const DISCRIMINATOR = null;
-
-    /**
-      * The original name of the model.
-      *
-      * @var string
-      */
-    protected static $openAPIModelName = 'body_2';
-
-    /**
-      * Array of property to type mappings. Used for (de)serialization
-      *
-      * @var string[]
-      */
-    protected static $openAPITypes = [
-        'enum_form_string_array' => 'string[]',
-        'enum_form_string' => 'string'
-    ];
-
-    /**
-      * Array of property to format mappings. Used for (de)serialization
-      *
-      * @var string[]
-      */
-    protected static $openAPIFormats = [
-        'enum_form_string_array' => null,
-        'enum_form_string' => null
-    ];
-
-    /**
-     * Array of property to type mappings. Used for (de)serialization
-     *
-     * @return array
-     */
-    public static function openAPITypes()
-    {
-        return self::$openAPITypes;
-    }
-
-    /**
-     * Array of property to format mappings. Used for (de)serialization
-     *
-     * @return array
-     */
-    public static function openAPIFormats()
-    {
-        return self::$openAPIFormats;
-    }
-
-    /**
-     * Array of attributes where the key is the local name,
-     * and the value is the original name
-     *
-     * @var string[]
-     */
-    protected static $attributeMap = [
-        'enum_form_string_array' => 'enum_form_string_array',
-        'enum_form_string' => 'enum_form_string'
-    ];
-
-    /**
-     * Array of attributes to setter functions (for deserialization of responses)
-     *
-     * @var string[]
-     */
-    protected static $setters = [
-        'enum_form_string_array' => 'setEnumFormStringArray',
-        'enum_form_string' => 'setEnumFormString'
-    ];
-
-    /**
-     * Array of attributes to getter functions (for serialization of requests)
-     *
-     * @var string[]
-     */
-    protected static $getters = [
-        'enum_form_string_array' => 'getEnumFormStringArray',
-        'enum_form_string' => 'getEnumFormString'
-    ];
-
-    /**
-     * Array of attributes where the key is the local name,
-     * and the value is the original name
-     *
-     * @return array
-     */
-    public static function attributeMap()
-    {
-        return self::$attributeMap;
-    }
-
-    /**
-     * Array of attributes to setter functions (for deserialization of responses)
-     *
-     * @return array
-     */
-    public static function setters()
-    {
-        return self::$setters;
-    }
-
-    /**
-     * Array of attributes to getter functions (for serialization of requests)
-     *
-     * @return array
-     */
-    public static function getters()
-    {
-        return self::$getters;
-    }
-
-    /**
-     * The original name of the model.
-     *
-     * @return string
-     */
-    public function getModelName()
-    {
-        return self::$openAPIModelName;
-    }
-
-    const ENUM_FORM_STRING_ARRAY_GREATER_THAN = '>';
-    const ENUM_FORM_STRING_ARRAY_DOLLAR = '$';
-    const ENUM_FORM_STRING_ABC = '_abc';
-    const ENUM_FORM_STRING_EFG = '-efg';
-    const ENUM_FORM_STRING_XYZ = '(xyz)';
-    
-
-    
-    /**
-     * Gets allowable values of the enum
-     *
-     * @return string[]
-     */
-    public function getEnumFormStringArrayAllowableValues()
-    {
-        return [
-            self::ENUM_FORM_STRING_ARRAY_GREATER_THAN,
-            self::ENUM_FORM_STRING_ARRAY_DOLLAR,
-        ];
-    }
-    
-    /**
-     * Gets allowable values of the enum
-     *
-     * @return string[]
-     */
-    public function getEnumFormStringAllowableValues()
-    {
-        return [
-            self::ENUM_FORM_STRING_ABC,
-            self::ENUM_FORM_STRING_EFG,
-            self::ENUM_FORM_STRING_XYZ,
-        ];
-    }
-    
-
-    /**
-     * Associative array for storing property values
-     *
-     * @var mixed[]
-     */
-    protected $container = [];
-
-    /**
-     * Constructor
-     *
-     * @param mixed[] $data Associated array of property values
-     *                      initializing the model
-     */
-    public function __construct(array $data = null)
-    {
-        $this->container['enum_form_string_array'] = isset($data['enum_form_string_array']) ? $data['enum_form_string_array'] : null;
-        $this->container['enum_form_string'] = isset($data['enum_form_string']) ? $data['enum_form_string'] : '-efg';
-    }
-
-    /**
-     * Show all the invalid properties with reasons.
-     *
-     * @return array invalid properties with reasons
-     */
-    public function listInvalidProperties()
-    {
-        $invalidProperties = [];
-
-        $allowedValues = $this->getEnumFormStringAllowableValues();
-        if (!is_null($this->container['enum_form_string']) && !in_array($this->container['enum_form_string'], $allowedValues, true)) {
-            $invalidProperties[] = sprintf(
-                "invalid value for 'enum_form_string', must be one of '%s'",
-                implode("', '", $allowedValues)
-            );
-        }
-
-        return $invalidProperties;
-    }
-
-    /**
-     * Validate all the properties in the model
-     * return true if all passed
-     *
-     * @return bool True if all properties are valid
-     */
-    public function valid()
-    {
-        return count($this->listInvalidProperties()) === 0;
-    }
-
-
-    /**
-     * Gets enum_form_string_array
-     *
-     * @return string[]|null
-     */
-    public function getEnumFormStringArray()
-    {
-        return $this->container['enum_form_string_array'];
-    }
-
-    /**
-     * Sets enum_form_string_array
-     *
-     * @param string[]|null $enum_form_string_array Form parameter enum test (string array)
-     *
-     * @return $this
-     */
-    public function setEnumFormStringArray($enum_form_string_array)
-    {
-        $allowedValues = $this->getEnumFormStringArrayAllowableValues();
-        if (!is_null($enum_form_string_array) && array_diff($enum_form_string_array, $allowedValues)) {
-            throw new \InvalidArgumentException(
-                sprintf(
-                    "Invalid value for 'enum_form_string_array', must be one of '%s'",
-                    implode("', '", $allowedValues)
-                )
-            );
-        }
-        $this->container['enum_form_string_array'] = $enum_form_string_array;
-
-        return $this;
-    }
-
-    /**
-     * Gets enum_form_string
-     *
-     * @return string|null
-     */
-    public function getEnumFormString()
-    {
-        return $this->container['enum_form_string'];
-    }
-
-    /**
-     * Sets enum_form_string
-     *
-     * @param string|null $enum_form_string Form parameter enum test (string)
-     *
-     * @return $this
-     */
-    public function setEnumFormString($enum_form_string)
-    {
-        $allowedValues = $this->getEnumFormStringAllowableValues();
-        if (!is_null($enum_form_string) && !in_array($enum_form_string, $allowedValues, true)) {
-            throw new \InvalidArgumentException(
-                sprintf(
-                    "Invalid value for 'enum_form_string', must be one of '%s'",
-                    implode("', '", $allowedValues)
-                )
-            );
-        }
-        $this->container['enum_form_string'] = $enum_form_string;
-
-        return $this;
-    }
-    /**
-     * Returns true if offset exists. False otherwise.
-     *
-     * @param integer $offset Offset
-     *
-     * @return boolean
-     */
-    public function offsetExists($offset)
-    {
-        return isset($this->container[$offset]);
-    }
-
-    /**
-     * Gets offset.
-     *
-     * @param integer $offset Offset
-     *
-     * @return mixed
-     */
-    public function offsetGet($offset)
-    {
-        return isset($this->container[$offset]) ? $this->container[$offset] : null;
-    }
-
-    /**
-     * Sets value based on offset.
-     *
-     * @param integer $offset Offset
-     * @param mixed   $value  Value to be set
-     *
-     * @return void
-     */
-    public function offsetSet($offset, $value)
-    {
-        if (is_null($offset)) {
-            $this->container[] = $value;
-        } else {
-            $this->container[$offset] = $value;
-        }
-    }
-
-    /**
-     * Unsets offset.
-     *
-     * @param integer $offset Offset
-     *
-     * @return void
-     */
-    public function offsetUnset($offset)
-    {
-        unset($this->container[$offset]);
-    }
-
-    /**
-     * Gets the string presentation of the object
-     *
-     * @return string
-     */
-    public function __toString()
-    {
-        return json_encode(
-            ObjectSerializer::sanitizeForSerialization($this),
-            JSON_PRETTY_PRINT
-        );
-    }
-}
-
-
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/lib/Model/Body3.php b/samples/openapi3/client/petstore/php/OpenAPIClient-php/lib/Model/Body3.php
deleted file mode 100644
index 31c915e74543..000000000000
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/lib/Model/Body3.php
+++ /dev/null
@@ -1,805 +0,0 @@
-<?php
-/**
- * Body3
- *
- * PHP version 5
- *
- * @category Class
- * @package  OpenAPI\Client
- * @author   OpenAPI Generator team
- * @link     https://openapi-generator.tech
- */
-
-/**
- * OpenAPI Petstore
- *
- * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
- *
- * OpenAPI spec version: 1.0.0
- * 
- * Generated by: https://openapi-generator.tech
- * OpenAPI Generator version: 4.0.0-SNAPSHOT
- */
-
-/**
- * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
- * https://openapi-generator.tech
- * Do not edit the class manually.
- */
-
-namespace OpenAPI\Client\Model;
-
-use \ArrayAccess;
-use \OpenAPI\Client\ObjectSerializer;
-
-/**
- * Body3 Class Doc Comment
- *
- * @category Class
- * @package  OpenAPI\Client
- * @author   OpenAPI Generator team
- * @link     https://openapi-generator.tech
- */
-class Body3 implements ModelInterface, ArrayAccess
-{
-    const DISCRIMINATOR = null;
-
-    /**
-      * The original name of the model.
-      *
-      * @var string
-      */
-    protected static $openAPIModelName = 'body_3';
-
-    /**
-      * Array of property to type mappings. Used for (de)serialization
-      *
-      * @var string[]
-      */
-    protected static $openAPITypes = [
-        'integer' => 'int',
-        'int32' => 'int',
-        'int64' => 'int',
-        'number' => 'float',
-        'float' => 'float',
-        'double' => 'double',
-        'string' => 'string',
-        'pattern_without_delimiter' => 'string',
-        'byte' => 'string',
-        'binary' => '\SplFileObject',
-        'date' => '\DateTime',
-        'date_time' => '\DateTime',
-        'password' => 'string',
-        'callback' => 'string'
-    ];
-
-    /**
-      * Array of property to format mappings. Used for (de)serialization
-      *
-      * @var string[]
-      */
-    protected static $openAPIFormats = [
-        'integer' => 'int32',
-        'int32' => 'int32',
-        'int64' => 'int64',
-        'number' => null,
-        'float' => 'float',
-        'double' => 'double',
-        'string' => null,
-        'pattern_without_delimiter' => null,
-        'byte' => 'byte',
-        'binary' => 'binary',
-        'date' => 'date',
-        'date_time' => 'date-time',
-        'password' => 'password',
-        'callback' => null
-    ];
-
-    /**
-     * Array of property to type mappings. Used for (de)serialization
-     *
-     * @return array
-     */
-    public static function openAPITypes()
-    {
-        return self::$openAPITypes;
-    }
-
-    /**
-     * Array of property to format mappings. Used for (de)serialization
-     *
-     * @return array
-     */
-    public static function openAPIFormats()
-    {
-        return self::$openAPIFormats;
-    }
-
-    /**
-     * Array of attributes where the key is the local name,
-     * and the value is the original name
-     *
-     * @var string[]
-     */
-    protected static $attributeMap = [
-        'integer' => 'integer',
-        'int32' => 'int32',
-        'int64' => 'int64',
-        'number' => 'number',
-        'float' => 'float',
-        'double' => 'double',
-        'string' => 'string',
-        'pattern_without_delimiter' => 'pattern_without_delimiter',
-        'byte' => 'byte',
-        'binary' => 'binary',
-        'date' => 'date',
-        'date_time' => 'dateTime',
-        'password' => 'password',
-        'callback' => 'callback'
-    ];
-
-    /**
-     * Array of attributes to setter functions (for deserialization of responses)
-     *
-     * @var string[]
-     */
-    protected static $setters = [
-        'integer' => 'setInteger',
-        'int32' => 'setInt32',
-        'int64' => 'setInt64',
-        'number' => 'setNumber',
-        'float' => 'setFloat',
-        'double' => 'setDouble',
-        'string' => 'setString',
-        'pattern_without_delimiter' => 'setPatternWithoutDelimiter',
-        'byte' => 'setByte',
-        'binary' => 'setBinary',
-        'date' => 'setDate',
-        'date_time' => 'setDateTime',
-        'password' => 'setPassword',
-        'callback' => 'setCallback'
-    ];
-
-    /**
-     * Array of attributes to getter functions (for serialization of requests)
-     *
-     * @var string[]
-     */
-    protected static $getters = [
-        'integer' => 'getInteger',
-        'int32' => 'getInt32',
-        'int64' => 'getInt64',
-        'number' => 'getNumber',
-        'float' => 'getFloat',
-        'double' => 'getDouble',
-        'string' => 'getString',
-        'pattern_without_delimiter' => 'getPatternWithoutDelimiter',
-        'byte' => 'getByte',
-        'binary' => 'getBinary',
-        'date' => 'getDate',
-        'date_time' => 'getDateTime',
-        'password' => 'getPassword',
-        'callback' => 'getCallback'
-    ];
-
-    /**
-     * Array of attributes where the key is the local name,
-     * and the value is the original name
-     *
-     * @return array
-     */
-    public static function attributeMap()
-    {
-        return self::$attributeMap;
-    }
-
-    /**
-     * Array of attributes to setter functions (for deserialization of responses)
-     *
-     * @return array
-     */
-    public static function setters()
-    {
-        return self::$setters;
-    }
-
-    /**
-     * Array of attributes to getter functions (for serialization of requests)
-     *
-     * @return array
-     */
-    public static function getters()
-    {
-        return self::$getters;
-    }
-
-    /**
-     * The original name of the model.
-     *
-     * @return string
-     */
-    public function getModelName()
-    {
-        return self::$openAPIModelName;
-    }
-
-    
-
-    
-
-    /**
-     * Associative array for storing property values
-     *
-     * @var mixed[]
-     */
-    protected $container = [];
-
-    /**
-     * Constructor
-     *
-     * @param mixed[] $data Associated array of property values
-     *                      initializing the model
-     */
-    public function __construct(array $data = null)
-    {
-        $this->container['integer'] = isset($data['integer']) ? $data['integer'] : null;
-        $this->container['int32'] = isset($data['int32']) ? $data['int32'] : null;
-        $this->container['int64'] = isset($data['int64']) ? $data['int64'] : null;
-        $this->container['number'] = isset($data['number']) ? $data['number'] : null;
-        $this->container['float'] = isset($data['float']) ? $data['float'] : null;
-        $this->container['double'] = isset($data['double']) ? $data['double'] : null;
-        $this->container['string'] = isset($data['string']) ? $data['string'] : null;
-        $this->container['pattern_without_delimiter'] = isset($data['pattern_without_delimiter']) ? $data['pattern_without_delimiter'] : null;
-        $this->container['byte'] = isset($data['byte']) ? $data['byte'] : null;
-        $this->container['binary'] = isset($data['binary']) ? $data['binary'] : null;
-        $this->container['date'] = isset($data['date']) ? $data['date'] : null;
-        $this->container['date_time'] = isset($data['date_time']) ? $data['date_time'] : null;
-        $this->container['password'] = isset($data['password']) ? $data['password'] : null;
-        $this->container['callback'] = isset($data['callback']) ? $data['callback'] : null;
-    }
-
-    /**
-     * Show all the invalid properties with reasons.
-     *
-     * @return array invalid properties with reasons
-     */
-    public function listInvalidProperties()
-    {
-        $invalidProperties = [];
-
-        if (!is_null($this->container['integer']) && ($this->container['integer'] > 100)) {
-            $invalidProperties[] = "invalid value for 'integer', must be smaller than or equal to 100.";
-        }
-
-        if (!is_null($this->container['integer']) && ($this->container['integer'] < 10)) {
-            $invalidProperties[] = "invalid value for 'integer', must be bigger than or equal to 10.";
-        }
-
-        if (!is_null($this->container['int32']) && ($this->container['int32'] > 200)) {
-            $invalidProperties[] = "invalid value for 'int32', must be smaller than or equal to 200.";
-        }
-
-        if (!is_null($this->container['int32']) && ($this->container['int32'] < 20)) {
-            $invalidProperties[] = "invalid value for 'int32', must be bigger than or equal to 20.";
-        }
-
-        if ($this->container['number'] === null) {
-            $invalidProperties[] = "'number' can't be null";
-        }
-        if (($this->container['number'] > 543.2)) {
-            $invalidProperties[] = "invalid value for 'number', must be smaller than or equal to 543.2.";
-        }
-
-        if (($this->container['number'] < 32.1)) {
-            $invalidProperties[] = "invalid value for 'number', must be bigger than or equal to 32.1.";
-        }
-
-        if (!is_null($this->container['float']) && ($this->container['float'] > 987.6)) {
-            $invalidProperties[] = "invalid value for 'float', must be smaller than or equal to 987.6.";
-        }
-
-        if ($this->container['double'] === null) {
-            $invalidProperties[] = "'double' can't be null";
-        }
-        if (($this->container['double'] > 123.4)) {
-            $invalidProperties[] = "invalid value for 'double', must be smaller than or equal to 123.4.";
-        }
-
-        if (($this->container['double'] < 67.8)) {
-            $invalidProperties[] = "invalid value for 'double', must be bigger than or equal to 67.8.";
-        }
-
-        if (!is_null($this->container['string']) && !preg_match("/[a-z]/i", $this->container['string'])) {
-            $invalidProperties[] = "invalid value for 'string', must be conform to the pattern /[a-z]/i.";
-        }
-
-        if ($this->container['pattern_without_delimiter'] === null) {
-            $invalidProperties[] = "'pattern_without_delimiter' can't be null";
-        }
-        if (!preg_match("/^[A-Z].*/", $this->container['pattern_without_delimiter'])) {
-            $invalidProperties[] = "invalid value for 'pattern_without_delimiter', must be conform to the pattern /^[A-Z].*/.";
-        }
-
-        if ($this->container['byte'] === null) {
-            $invalidProperties[] = "'byte' can't be null";
-        }
-        if (!is_null($this->container['password']) && (mb_strlen($this->container['password']) > 64)) {
-            $invalidProperties[] = "invalid value for 'password', the character length must be smaller than or equal to 64.";
-        }
-
-        if (!is_null($this->container['password']) && (mb_strlen($this->container['password']) < 10)) {
-            $invalidProperties[] = "invalid value for 'password', the character length must be bigger than or equal to 10.";
-        }
-
-        return $invalidProperties;
-    }
-
-    /**
-     * Validate all the properties in the model
-     * return true if all passed
-     *
-     * @return bool True if all properties are valid
-     */
-    public function valid()
-    {
-        return count($this->listInvalidProperties()) === 0;
-    }
-
-
-    /**
-     * Gets integer
-     *
-     * @return int|null
-     */
-    public function getInteger()
-    {
-        return $this->container['integer'];
-    }
-
-    /**
-     * Sets integer
-     *
-     * @param int|null $integer None
-     *
-     * @return $this
-     */
-    public function setInteger($integer)
-    {
-
-        if (!is_null($integer) && ($integer > 100)) {
-            throw new \InvalidArgumentException('invalid value for $integer when calling Body3., must be smaller than or equal to 100.');
-        }
-        if (!is_null($integer) && ($integer < 10)) {
-            throw new \InvalidArgumentException('invalid value for $integer when calling Body3., must be bigger than or equal to 10.');
-        }
-
-        $this->container['integer'] = $integer;
-
-        return $this;
-    }
-
-    /**
-     * Gets int32
-     *
-     * @return int|null
-     */
-    public function getInt32()
-    {
-        return $this->container['int32'];
-    }
-
-    /**
-     * Sets int32
-     *
-     * @param int|null $int32 None
-     *
-     * @return $this
-     */
-    public function setInt32($int32)
-    {
-
-        if (!is_null($int32) && ($int32 > 200)) {
-            throw new \InvalidArgumentException('invalid value for $int32 when calling Body3., must be smaller than or equal to 200.');
-        }
-        if (!is_null($int32) && ($int32 < 20)) {
-            throw new \InvalidArgumentException('invalid value for $int32 when calling Body3., must be bigger than or equal to 20.');
-        }
-
-        $this->container['int32'] = $int32;
-
-        return $this;
-    }
-
-    /**
-     * Gets int64
-     *
-     * @return int|null
-     */
-    public function getInt64()
-    {
-        return $this->container['int64'];
-    }
-
-    /**
-     * Sets int64
-     *
-     * @param int|null $int64 None
-     *
-     * @return $this
-     */
-    public function setInt64($int64)
-    {
-        $this->container['int64'] = $int64;
-
-        return $this;
-    }
-
-    /**
-     * Gets number
-     *
-     * @return float
-     */
-    public function getNumber()
-    {
-        return $this->container['number'];
-    }
-
-    /**
-     * Sets number
-     *
-     * @param float $number None
-     *
-     * @return $this
-     */
-    public function setNumber($number)
-    {
-
-        if (($number > 543.2)) {
-            throw new \InvalidArgumentException('invalid value for $number when calling Body3., must be smaller than or equal to 543.2.');
-        }
-        if (($number < 32.1)) {
-            throw new \InvalidArgumentException('invalid value for $number when calling Body3., must be bigger than or equal to 32.1.');
-        }
-
-        $this->container['number'] = $number;
-
-        return $this;
-    }
-
-    /**
-     * Gets float
-     *
-     * @return float|null
-     */
-    public function getFloat()
-    {
-        return $this->container['float'];
-    }
-
-    /**
-     * Sets float
-     *
-     * @param float|null $float None
-     *
-     * @return $this
-     */
-    public function setFloat($float)
-    {
-
-        if (!is_null($float) && ($float > 987.6)) {
-            throw new \InvalidArgumentException('invalid value for $float when calling Body3., must be smaller than or equal to 987.6.');
-        }
-
-        $this->container['float'] = $float;
-
-        return $this;
-    }
-
-    /**
-     * Gets double
-     *
-     * @return double
-     */
-    public function getDouble()
-    {
-        return $this->container['double'];
-    }
-
-    /**
-     * Sets double
-     *
-     * @param double $double None
-     *
-     * @return $this
-     */
-    public function setDouble($double)
-    {
-
-        if (($double > 123.4)) {
-            throw new \InvalidArgumentException('invalid value for $double when calling Body3., must be smaller than or equal to 123.4.');
-        }
-        if (($double < 67.8)) {
-            throw new \InvalidArgumentException('invalid value for $double when calling Body3., must be bigger than or equal to 67.8.');
-        }
-
-        $this->container['double'] = $double;
-
-        return $this;
-    }
-
-    /**
-     * Gets string
-     *
-     * @return string|null
-     */
-    public function getString()
-    {
-        return $this->container['string'];
-    }
-
-    /**
-     * Sets string
-     *
-     * @param string|null $string None
-     *
-     * @return $this
-     */
-    public function setString($string)
-    {
-
-        if (!is_null($string) && (!preg_match("/[a-z]/i", $string))) {
-            throw new \InvalidArgumentException("invalid value for $string when calling Body3., must conform to the pattern /[a-z]/i.");
-        }
-
-        $this->container['string'] = $string;
-
-        return $this;
-    }
-
-    /**
-     * Gets pattern_without_delimiter
-     *
-     * @return string
-     */
-    public function getPatternWithoutDelimiter()
-    {
-        return $this->container['pattern_without_delimiter'];
-    }
-
-    /**
-     * Sets pattern_without_delimiter
-     *
-     * @param string $pattern_without_delimiter None
-     *
-     * @return $this
-     */
-    public function setPatternWithoutDelimiter($pattern_without_delimiter)
-    {
-
-        if ((!preg_match("/^[A-Z].*/", $pattern_without_delimiter))) {
-            throw new \InvalidArgumentException("invalid value for $pattern_without_delimiter when calling Body3., must conform to the pattern /^[A-Z].*/.");
-        }
-
-        $this->container['pattern_without_delimiter'] = $pattern_without_delimiter;
-
-        return $this;
-    }
-
-    /**
-     * Gets byte
-     *
-     * @return string
-     */
-    public function getByte()
-    {
-        return $this->container['byte'];
-    }
-
-    /**
-     * Sets byte
-     *
-     * @param string $byte None
-     *
-     * @return $this
-     */
-    public function setByte($byte)
-    {
-        $this->container['byte'] = $byte;
-
-        return $this;
-    }
-
-    /**
-     * Gets binary
-     *
-     * @return \SplFileObject|null
-     */
-    public function getBinary()
-    {
-        return $this->container['binary'];
-    }
-
-    /**
-     * Sets binary
-     *
-     * @param \SplFileObject|null $binary None
-     *
-     * @return $this
-     */
-    public function setBinary($binary)
-    {
-        $this->container['binary'] = $binary;
-
-        return $this;
-    }
-
-    /**
-     * Gets date
-     *
-     * @return \DateTime|null
-     */
-    public function getDate()
-    {
-        return $this->container['date'];
-    }
-
-    /**
-     * Sets date
-     *
-     * @param \DateTime|null $date None
-     *
-     * @return $this
-     */
-    public function setDate($date)
-    {
-        $this->container['date'] = $date;
-
-        return $this;
-    }
-
-    /**
-     * Gets date_time
-     *
-     * @return \DateTime|null
-     */
-    public function getDateTime()
-    {
-        return $this->container['date_time'];
-    }
-
-    /**
-     * Sets date_time
-     *
-     * @param \DateTime|null $date_time None
-     *
-     * @return $this
-     */
-    public function setDateTime($date_time)
-    {
-        $this->container['date_time'] = $date_time;
-
-        return $this;
-    }
-
-    /**
-     * Gets password
-     *
-     * @return string|null
-     */
-    public function getPassword()
-    {
-        return $this->container['password'];
-    }
-
-    /**
-     * Sets password
-     *
-     * @param string|null $password None
-     *
-     * @return $this
-     */
-    public function setPassword($password)
-    {
-        if (!is_null($password) && (mb_strlen($password) > 64)) {
-            throw new \InvalidArgumentException('invalid length for $password when calling Body3., must be smaller than or equal to 64.');
-        }
-        if (!is_null($password) && (mb_strlen($password) < 10)) {
-            throw new \InvalidArgumentException('invalid length for $password when calling Body3., must be bigger than or equal to 10.');
-        }
-
-        $this->container['password'] = $password;
-
-        return $this;
-    }
-
-    /**
-     * Gets callback
-     *
-     * @return string|null
-     */
-    public function getCallback()
-    {
-        return $this->container['callback'];
-    }
-
-    /**
-     * Sets callback
-     *
-     * @param string|null $callback None
-     *
-     * @return $this
-     */
-    public function setCallback($callback)
-    {
-        $this->container['callback'] = $callback;
-
-        return $this;
-    }
-    /**
-     * Returns true if offset exists. False otherwise.
-     *
-     * @param integer $offset Offset
-     *
-     * @return boolean
-     */
-    public function offsetExists($offset)
-    {
-        return isset($this->container[$offset]);
-    }
-
-    /**
-     * Gets offset.
-     *
-     * @param integer $offset Offset
-     *
-     * @return mixed
-     */
-    public function offsetGet($offset)
-    {
-        return isset($this->container[$offset]) ? $this->container[$offset] : null;
-    }
-
-    /**
-     * Sets value based on offset.
-     *
-     * @param integer $offset Offset
-     * @param mixed   $value  Value to be set
-     *
-     * @return void
-     */
-    public function offsetSet($offset, $value)
-    {
-        if (is_null($offset)) {
-            $this->container[] = $value;
-        } else {
-            $this->container[$offset] = $value;
-        }
-    }
-
-    /**
-     * Unsets offset.
-     *
-     * @param integer $offset Offset
-     *
-     * @return void
-     */
-    public function offsetUnset($offset)
-    {
-        unset($this->container[$offset]);
-    }
-
-    /**
-     * Gets the string presentation of the object
-     *
-     * @return string
-     */
-    public function __toString()
-    {
-        return json_encode(
-            ObjectSerializer::sanitizeForSerialization($this),
-            JSON_PRETTY_PRINT
-        );
-    }
-}
-
-
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/lib/Model/Body4.php b/samples/openapi3/client/petstore/php/OpenAPIClient-php/lib/Model/Body4.php
deleted file mode 100644
index 728a54f961e5..000000000000
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/lib/Model/Body4.php
+++ /dev/null
@@ -1,333 +0,0 @@
-<?php
-/**
- * Body4
- *
- * PHP version 5
- *
- * @category Class
- * @package  OpenAPI\Client
- * @author   OpenAPI Generator team
- * @link     https://openapi-generator.tech
- */
-
-/**
- * OpenAPI Petstore
- *
- * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
- *
- * OpenAPI spec version: 1.0.0
- * 
- * Generated by: https://openapi-generator.tech
- * OpenAPI Generator version: 4.0.0-SNAPSHOT
- */
-
-/**
- * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
- * https://openapi-generator.tech
- * Do not edit the class manually.
- */
-
-namespace OpenAPI\Client\Model;
-
-use \ArrayAccess;
-use \OpenAPI\Client\ObjectSerializer;
-
-/**
- * Body4 Class Doc Comment
- *
- * @category Class
- * @package  OpenAPI\Client
- * @author   OpenAPI Generator team
- * @link     https://openapi-generator.tech
- */
-class Body4 implements ModelInterface, ArrayAccess
-{
-    const DISCRIMINATOR = null;
-
-    /**
-      * The original name of the model.
-      *
-      * @var string
-      */
-    protected static $openAPIModelName = 'body_4';
-
-    /**
-      * Array of property to type mappings. Used for (de)serialization
-      *
-      * @var string[]
-      */
-    protected static $openAPITypes = [
-        'param' => 'string',
-        'param2' => 'string'
-    ];
-
-    /**
-      * Array of property to format mappings. Used for (de)serialization
-      *
-      * @var string[]
-      */
-    protected static $openAPIFormats = [
-        'param' => null,
-        'param2' => null
-    ];
-
-    /**
-     * Array of property to type mappings. Used for (de)serialization
-     *
-     * @return array
-     */
-    public static function openAPITypes()
-    {
-        return self::$openAPITypes;
-    }
-
-    /**
-     * Array of property to format mappings. Used for (de)serialization
-     *
-     * @return array
-     */
-    public static function openAPIFormats()
-    {
-        return self::$openAPIFormats;
-    }
-
-    /**
-     * Array of attributes where the key is the local name,
-     * and the value is the original name
-     *
-     * @var string[]
-     */
-    protected static $attributeMap = [
-        'param' => 'param',
-        'param2' => 'param2'
-    ];
-
-    /**
-     * Array of attributes to setter functions (for deserialization of responses)
-     *
-     * @var string[]
-     */
-    protected static $setters = [
-        'param' => 'setParam',
-        'param2' => 'setParam2'
-    ];
-
-    /**
-     * Array of attributes to getter functions (for serialization of requests)
-     *
-     * @var string[]
-     */
-    protected static $getters = [
-        'param' => 'getParam',
-        'param2' => 'getParam2'
-    ];
-
-    /**
-     * Array of attributes where the key is the local name,
-     * and the value is the original name
-     *
-     * @return array
-     */
-    public static function attributeMap()
-    {
-        return self::$attributeMap;
-    }
-
-    /**
-     * Array of attributes to setter functions (for deserialization of responses)
-     *
-     * @return array
-     */
-    public static function setters()
-    {
-        return self::$setters;
-    }
-
-    /**
-     * Array of attributes to getter functions (for serialization of requests)
-     *
-     * @return array
-     */
-    public static function getters()
-    {
-        return self::$getters;
-    }
-
-    /**
-     * The original name of the model.
-     *
-     * @return string
-     */
-    public function getModelName()
-    {
-        return self::$openAPIModelName;
-    }
-
-    
-
-    
-
-    /**
-     * Associative array for storing property values
-     *
-     * @var mixed[]
-     */
-    protected $container = [];
-
-    /**
-     * Constructor
-     *
-     * @param mixed[] $data Associated array of property values
-     *                      initializing the model
-     */
-    public function __construct(array $data = null)
-    {
-        $this->container['param'] = isset($data['param']) ? $data['param'] : null;
-        $this->container['param2'] = isset($data['param2']) ? $data['param2'] : null;
-    }
-
-    /**
-     * Show all the invalid properties with reasons.
-     *
-     * @return array invalid properties with reasons
-     */
-    public function listInvalidProperties()
-    {
-        $invalidProperties = [];
-
-        if ($this->container['param'] === null) {
-            $invalidProperties[] = "'param' can't be null";
-        }
-        if ($this->container['param2'] === null) {
-            $invalidProperties[] = "'param2' can't be null";
-        }
-        return $invalidProperties;
-    }
-
-    /**
-     * Validate all the properties in the model
-     * return true if all passed
-     *
-     * @return bool True if all properties are valid
-     */
-    public function valid()
-    {
-        return count($this->listInvalidProperties()) === 0;
-    }
-
-
-    /**
-     * Gets param
-     *
-     * @return string
-     */
-    public function getParam()
-    {
-        return $this->container['param'];
-    }
-
-    /**
-     * Sets param
-     *
-     * @param string $param field1
-     *
-     * @return $this
-     */
-    public function setParam($param)
-    {
-        $this->container['param'] = $param;
-
-        return $this;
-    }
-
-    /**
-     * Gets param2
-     *
-     * @return string
-     */
-    public function getParam2()
-    {
-        return $this->container['param2'];
-    }
-
-    /**
-     * Sets param2
-     *
-     * @param string $param2 field2
-     *
-     * @return $this
-     */
-    public function setParam2($param2)
-    {
-        $this->container['param2'] = $param2;
-
-        return $this;
-    }
-    /**
-     * Returns true if offset exists. False otherwise.
-     *
-     * @param integer $offset Offset
-     *
-     * @return boolean
-     */
-    public function offsetExists($offset)
-    {
-        return isset($this->container[$offset]);
-    }
-
-    /**
-     * Gets offset.
-     *
-     * @param integer $offset Offset
-     *
-     * @return mixed
-     */
-    public function offsetGet($offset)
-    {
-        return isset($this->container[$offset]) ? $this->container[$offset] : null;
-    }
-
-    /**
-     * Sets value based on offset.
-     *
-     * @param integer $offset Offset
-     * @param mixed   $value  Value to be set
-     *
-     * @return void
-     */
-    public function offsetSet($offset, $value)
-    {
-        if (is_null($offset)) {
-            $this->container[] = $value;
-        } else {
-            $this->container[$offset] = $value;
-        }
-    }
-
-    /**
-     * Unsets offset.
-     *
-     * @param integer $offset Offset
-     *
-     * @return void
-     */
-    public function offsetUnset($offset)
-    {
-        unset($this->container[$offset]);
-    }
-
-    /**
-     * Gets the string presentation of the object
-     *
-     * @return string
-     */
-    public function __toString()
-    {
-        return json_encode(
-            ObjectSerializer::sanitizeForSerialization($this),
-            JSON_PRETTY_PRINT
-        );
-    }
-}
-
-
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/lib/Model/Body5.php b/samples/openapi3/client/petstore/php/OpenAPIClient-php/lib/Model/Body5.php
deleted file mode 100644
index 273a5c4caa66..000000000000
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/lib/Model/Body5.php
+++ /dev/null
@@ -1,330 +0,0 @@
-<?php
-/**
- * Body5
- *
- * PHP version 5
- *
- * @category Class
- * @package  OpenAPI\Client
- * @author   OpenAPI Generator team
- * @link     https://openapi-generator.tech
- */
-
-/**
- * OpenAPI Petstore
- *
- * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
- *
- * OpenAPI spec version: 1.0.0
- * 
- * Generated by: https://openapi-generator.tech
- * OpenAPI Generator version: 4.0.0-SNAPSHOT
- */
-
-/**
- * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
- * https://openapi-generator.tech
- * Do not edit the class manually.
- */
-
-namespace OpenAPI\Client\Model;
-
-use \ArrayAccess;
-use \OpenAPI\Client\ObjectSerializer;
-
-/**
- * Body5 Class Doc Comment
- *
- * @category Class
- * @package  OpenAPI\Client
- * @author   OpenAPI Generator team
- * @link     https://openapi-generator.tech
- */
-class Body5 implements ModelInterface, ArrayAccess
-{
-    const DISCRIMINATOR = null;
-
-    /**
-      * The original name of the model.
-      *
-      * @var string
-      */
-    protected static $openAPIModelName = 'body_5';
-
-    /**
-      * Array of property to type mappings. Used for (de)serialization
-      *
-      * @var string[]
-      */
-    protected static $openAPITypes = [
-        'additional_metadata' => 'string',
-        'required_file' => '\SplFileObject'
-    ];
-
-    /**
-      * Array of property to format mappings. Used for (de)serialization
-      *
-      * @var string[]
-      */
-    protected static $openAPIFormats = [
-        'additional_metadata' => null,
-        'required_file' => 'binary'
-    ];
-
-    /**
-     * Array of property to type mappings. Used for (de)serialization
-     *
-     * @return array
-     */
-    public static function openAPITypes()
-    {
-        return self::$openAPITypes;
-    }
-
-    /**
-     * Array of property to format mappings. Used for (de)serialization
-     *
-     * @return array
-     */
-    public static function openAPIFormats()
-    {
-        return self::$openAPIFormats;
-    }
-
-    /**
-     * Array of attributes where the key is the local name,
-     * and the value is the original name
-     *
-     * @var string[]
-     */
-    protected static $attributeMap = [
-        'additional_metadata' => 'additionalMetadata',
-        'required_file' => 'requiredFile'
-    ];
-
-    /**
-     * Array of attributes to setter functions (for deserialization of responses)
-     *
-     * @var string[]
-     */
-    protected static $setters = [
-        'additional_metadata' => 'setAdditionalMetadata',
-        'required_file' => 'setRequiredFile'
-    ];
-
-    /**
-     * Array of attributes to getter functions (for serialization of requests)
-     *
-     * @var string[]
-     */
-    protected static $getters = [
-        'additional_metadata' => 'getAdditionalMetadata',
-        'required_file' => 'getRequiredFile'
-    ];
-
-    /**
-     * Array of attributes where the key is the local name,
-     * and the value is the original name
-     *
-     * @return array
-     */
-    public static function attributeMap()
-    {
-        return self::$attributeMap;
-    }
-
-    /**
-     * Array of attributes to setter functions (for deserialization of responses)
-     *
-     * @return array
-     */
-    public static function setters()
-    {
-        return self::$setters;
-    }
-
-    /**
-     * Array of attributes to getter functions (for serialization of requests)
-     *
-     * @return array
-     */
-    public static function getters()
-    {
-        return self::$getters;
-    }
-
-    /**
-     * The original name of the model.
-     *
-     * @return string
-     */
-    public function getModelName()
-    {
-        return self::$openAPIModelName;
-    }
-
-    
-
-    
-
-    /**
-     * Associative array for storing property values
-     *
-     * @var mixed[]
-     */
-    protected $container = [];
-
-    /**
-     * Constructor
-     *
-     * @param mixed[] $data Associated array of property values
-     *                      initializing the model
-     */
-    public function __construct(array $data = null)
-    {
-        $this->container['additional_metadata'] = isset($data['additional_metadata']) ? $data['additional_metadata'] : null;
-        $this->container['required_file'] = isset($data['required_file']) ? $data['required_file'] : null;
-    }
-
-    /**
-     * Show all the invalid properties with reasons.
-     *
-     * @return array invalid properties with reasons
-     */
-    public function listInvalidProperties()
-    {
-        $invalidProperties = [];
-
-        if ($this->container['required_file'] === null) {
-            $invalidProperties[] = "'required_file' can't be null";
-        }
-        return $invalidProperties;
-    }
-
-    /**
-     * Validate all the properties in the model
-     * return true if all passed
-     *
-     * @return bool True if all properties are valid
-     */
-    public function valid()
-    {
-        return count($this->listInvalidProperties()) === 0;
-    }
-
-
-    /**
-     * Gets additional_metadata
-     *
-     * @return string|null
-     */
-    public function getAdditionalMetadata()
-    {
-        return $this->container['additional_metadata'];
-    }
-
-    /**
-     * Sets additional_metadata
-     *
-     * @param string|null $additional_metadata Additional data to pass to server
-     *
-     * @return $this
-     */
-    public function setAdditionalMetadata($additional_metadata)
-    {
-        $this->container['additional_metadata'] = $additional_metadata;
-
-        return $this;
-    }
-
-    /**
-     * Gets required_file
-     *
-     * @return \SplFileObject
-     */
-    public function getRequiredFile()
-    {
-        return $this->container['required_file'];
-    }
-
-    /**
-     * Sets required_file
-     *
-     * @param \SplFileObject $required_file file to upload
-     *
-     * @return $this
-     */
-    public function setRequiredFile($required_file)
-    {
-        $this->container['required_file'] = $required_file;
-
-        return $this;
-    }
-    /**
-     * Returns true if offset exists. False otherwise.
-     *
-     * @param integer $offset Offset
-     *
-     * @return boolean
-     */
-    public function offsetExists($offset)
-    {
-        return isset($this->container[$offset]);
-    }
-
-    /**
-     * Gets offset.
-     *
-     * @param integer $offset Offset
-     *
-     * @return mixed
-     */
-    public function offsetGet($offset)
-    {
-        return isset($this->container[$offset]) ? $this->container[$offset] : null;
-    }
-
-    /**
-     * Sets value based on offset.
-     *
-     * @param integer $offset Offset
-     * @param mixed   $value  Value to be set
-     *
-     * @return void
-     */
-    public function offsetSet($offset, $value)
-    {
-        if (is_null($offset)) {
-            $this->container[] = $value;
-        } else {
-            $this->container[$offset] = $value;
-        }
-    }
-
-    /**
-     * Unsets offset.
-     *
-     * @param integer $offset Offset
-     *
-     * @return void
-     */
-    public function offsetUnset($offset)
-    {
-        unset($this->container[$offset]);
-    }
-
-    /**
-     * Gets the string presentation of the object
-     *
-     * @return string
-     */
-    public function __toString()
-    {
-        return json_encode(
-            ObjectSerializer::sanitizeForSerialization($this),
-            JSON_PRETTY_PRINT
-        );
-    }
-}
-
-
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/lib/Model/StringBooleanMap.php b/samples/openapi3/client/petstore/php/OpenAPIClient-php/lib/Model/StringBooleanMap.php
deleted file mode 100644
index 41c50d10d6e9..000000000000
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/lib/Model/StringBooleanMap.php
+++ /dev/null
@@ -1,272 +0,0 @@
-<?php
-/**
- * StringBooleanMap
- *
- * PHP version 5
- *
- * @category Class
- * @package  OpenAPI\Client
- * @author   OpenAPI Generator team
- * @link     https://openapi-generator.tech
- */
-
-/**
- * OpenAPI Petstore
- *
- * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
- *
- * OpenAPI spec version: 1.0.0
- * 
- * Generated by: https://openapi-generator.tech
- * OpenAPI Generator version: 4.0.0-SNAPSHOT
- */
-
-/**
- * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
- * https://openapi-generator.tech
- * Do not edit the class manually.
- */
-
-namespace OpenAPI\Client\Model;
-
-use \ArrayAccess;
-use \OpenAPI\Client\ObjectSerializer;
-
-/**
- * StringBooleanMap Class Doc Comment
- *
- * @category Class
- * @package  OpenAPI\Client
- * @author   OpenAPI Generator team
- * @link     https://openapi-generator.tech
- */
-class StringBooleanMap implements ModelInterface, ArrayAccess
-{
-    const DISCRIMINATOR = null;
-
-    /**
-      * The original name of the model.
-      *
-      * @var string
-      */
-    protected static $openAPIModelName = 'StringBooleanMap';
-
-    /**
-      * Array of property to type mappings. Used for (de)serialization
-      *
-      * @var string[]
-      */
-    protected static $openAPITypes = [
-        
-    ];
-
-    /**
-      * Array of property to format mappings. Used for (de)serialization
-      *
-      * @var string[]
-      */
-    protected static $openAPIFormats = [
-        
-    ];
-
-    /**
-     * Array of property to type mappings. Used for (de)serialization
-     *
-     * @return array
-     */
-    public static function openAPITypes()
-    {
-        return self::$openAPITypes;
-    }
-
-    /**
-     * Array of property to format mappings. Used for (de)serialization
-     *
-     * @return array
-     */
-    public static function openAPIFormats()
-    {
-        return self::$openAPIFormats;
-    }
-
-    /**
-     * Array of attributes where the key is the local name,
-     * and the value is the original name
-     *
-     * @var string[]
-     */
-    protected static $attributeMap = [
-        
-    ];
-
-    /**
-     * Array of attributes to setter functions (for deserialization of responses)
-     *
-     * @var string[]
-     */
-    protected static $setters = [
-        
-    ];
-
-    /**
-     * Array of attributes to getter functions (for serialization of requests)
-     *
-     * @var string[]
-     */
-    protected static $getters = [
-        
-    ];
-
-    /**
-     * Array of attributes where the key is the local name,
-     * and the value is the original name
-     *
-     * @return array
-     */
-    public static function attributeMap()
-    {
-        return self::$attributeMap;
-    }
-
-    /**
-     * Array of attributes to setter functions (for deserialization of responses)
-     *
-     * @return array
-     */
-    public static function setters()
-    {
-        return self::$setters;
-    }
-
-    /**
-     * Array of attributes to getter functions (for serialization of requests)
-     *
-     * @return array
-     */
-    public static function getters()
-    {
-        return self::$getters;
-    }
-
-    /**
-     * The original name of the model.
-     *
-     * @return string
-     */
-    public function getModelName()
-    {
-        return self::$openAPIModelName;
-    }
-
-    
-
-    
-
-    /**
-     * Associative array for storing property values
-     *
-     * @var mixed[]
-     */
-    protected $container = [];
-
-    /**
-     * Constructor
-     *
-     * @param mixed[] $data Associated array of property values
-     *                      initializing the model
-     */
-    public function __construct(array $data = null)
-    {
-    }
-
-    /**
-     * Show all the invalid properties with reasons.
-     *
-     * @return array invalid properties with reasons
-     */
-    public function listInvalidProperties()
-    {
-        $invalidProperties = parent::listInvalidProperties();
-
-        return $invalidProperties;
-    }
-
-    /**
-     * Validate all the properties in the model
-     * return true if all passed
-     *
-     * @return bool True if all properties are valid
-     */
-    public function valid()
-    {
-        return count($this->listInvalidProperties()) === 0;
-    }
-
-    /**
-     * Returns true if offset exists. False otherwise.
-     *
-     * @param integer $offset Offset
-     *
-     * @return boolean
-     */
-    public function offsetExists($offset)
-    {
-        return isset($this->container[$offset]);
-    }
-
-    /**
-     * Gets offset.
-     *
-     * @param integer $offset Offset
-     *
-     * @return mixed
-     */
-    public function offsetGet($offset)
-    {
-        return isset($this->container[$offset]) ? $this->container[$offset] : null;
-    }
-
-    /**
-     * Sets value based on offset.
-     *
-     * @param integer $offset Offset
-     * @param mixed   $value  Value to be set
-     *
-     * @return void
-     */
-    public function offsetSet($offset, $value)
-    {
-        if (is_null($offset)) {
-            $this->container[] = $value;
-        } else {
-            $this->container[$offset] = $value;
-        }
-    }
-
-    /**
-     * Unsets offset.
-     *
-     * @param integer $offset Offset
-     *
-     * @return void
-     */
-    public function offsetUnset($offset)
-    {
-        unset($this->container[$offset]);
-    }
-
-    /**
-     * Gets the string presentation of the object
-     *
-     * @return string
-     */
-    public function __toString()
-    {
-        return json_encode(
-            ObjectSerializer::sanitizeForSerialization($this),
-            JSON_PRETTY_PRINT
-        );
-    }
-}
-
-
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/tests/ModelInheritanceTest.php b/samples/openapi3/client/petstore/php/OpenAPIClient-php/tests/ModelInheritanceTest.php
index 8c78e5ae8da2..333b88bbedaa 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/tests/ModelInheritanceTest.php
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/tests/ModelInheritanceTest.php
@@ -3,7 +3,6 @@
 namespace OpenAPI\Client;
 
 use OpenAPI\Client\Model\Animal;
-use OpenAPI\Client\Model\AnimalFarm;
 use OpenAPI\Client\Model\Cat;
 use OpenAPI\Client\Model\Dog;
 use PHPUnit\Framework\TestCase;
@@ -75,8 +74,8 @@ public function testDiscriminatorInitialization()
      */
     public function testArrayStuff()
     {
-        // create an AnimalFarm which is an object implementing the ArrayAccess interface
-        $farm = new AnimalFarm();
+        // create an array of Animal
+        $farm = array();
 
         // add some animals to the farm to make sure the ArrayAccess interface works
         $farm[] = new Dog();
diff --git a/samples/openapi3/client/petstore/php/OpenAPIClient-php/tests/PetApiTest.php b/samples/openapi3/client/petstore/php/OpenAPIClient-php/tests/PetApiTest.php
index 41c471e951b8..45b3072db4e0 100644
--- a/samples/openapi3/client/petstore/php/OpenAPIClient-php/tests/PetApiTest.php
+++ b/samples/openapi3/client/petstore/php/OpenAPIClient-php/tests/PetApiTest.php
@@ -323,9 +323,8 @@ public function testDiscriminatorInitialization()
     // test if ArrayAccess interface works
     public function testArrayStuff()
     {
-        // create an AnimalFarm which is an object implementing the
-        // ArrayAccess interface
-        $farm = new Model\AnimalFarm();
+        // create an array of Animal
+        $farm = array();
 
         // add some animals to the farm to make sure the ArrayAccess
         // interface works