From 4ee5b786997365a70e98150bad34addcdc9fdb3e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C5=A0imon=20Luka=C5=A1=C3=ADk?= <isimluk@fedoraproject.org>
Date: Tue, 24 Oct 2023 22:45:01 +0200
Subject: [PATCH 1/2] [ruby|client] Fix unmarshalling errors of enums inside
 other objects

Ruby|Client autogenerated model classes for Enums do not expose openapi_one_of
method. Instead they expose openapi_any_of method like:

      # List of class defined in anyOf (OpenAPI v3)
      def openapi_any_of
        [
          :String
        ]
      end

Both types (objects and enums) do respond to build() method.
---
 .../src/main/resources/ruby-client/base_object.mustache         | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/openapi-generator/src/main/resources/ruby-client/base_object.mustache b/modules/openapi-generator/src/main/resources/ruby-client/base_object.mustache
index 4f11ca1bf3c3..ae76c4531d21 100644
--- a/modules/openapi-generator/src/main/resources/ruby-client/base_object.mustache
+++ b/modules/openapi-generator/src/main/resources/ruby-client/base_object.mustache
@@ -63,7 +63,7 @@
       else # model
         # models (e.g. Pet) or oneOf
         klass = {{moduleName}}.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 

From 0d6a746266b8b55c83ba21011e19fe097302964a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C5=A0imon=20Luka=C5=A1=C3=ADk?= <isimluk@fedoraproject.org>
Date: Wed, 25 Oct 2023 10:56:12 +0200
Subject: [PATCH 2/2] Regenerate samples

---
 .../echo_api/ruby-httpx/lib/openapi_client/models/bird.rb       | 2 +-
 .../echo_api/ruby-httpx/lib/openapi_client/models/category.rb   | 2 +-
 .../echo_api/ruby-httpx/lib/openapi_client/models/data_query.rb | 2 +-
 .../ruby-httpx/lib/openapi_client/models/default_value.rb       | 2 +-
 .../lib/openapi_client/models/number_properties_only.rb         | 2 +-
 .../client/echo_api/ruby-httpx/lib/openapi_client/models/pet.rb | 2 +-
 .../echo_api/ruby-httpx/lib/openapi_client/models/query.rb      | 2 +-
 .../client/echo_api/ruby-httpx/lib/openapi_client/models/tag.rb | 2 +-
 ..._object_explode_true_object_all_of_query_object_parameter.rb | 2 +-
 ...yle_form_explode_true_array_string_query_object_parameter.rb | 2 +-
 .../lib/petstore/models/additional_properties_class.rb          | 2 +-
 .../ruby-autoload/lib/petstore/models/all_of_with_single_ref.rb | 2 +-
 .../client/petstore/ruby-autoload/lib/petstore/models/animal.rb | 2 +-
 .../petstore/ruby-autoload/lib/petstore/models/api_response.rb  | 2 +-
 .../lib/petstore/models/array_of_array_of_number_only.rb        | 2 +-
 .../ruby-autoload/lib/petstore/models/array_of_number_only.rb   | 2 +-
 .../petstore/ruby-autoload/lib/petstore/models/array_test.rb    | 2 +-
 .../ruby-autoload/lib/petstore/models/capitalization.rb         | 2 +-
 .../client/petstore/ruby-autoload/lib/petstore/models/cat.rb    | 2 +-
 .../petstore/ruby-autoload/lib/petstore/models/category.rb      | 2 +-
 .../ruby-autoload/lib/petstore/models/child_with_nullable.rb    | 2 +-
 .../petstore/ruby-autoload/lib/petstore/models/class_model.rb   | 2 +-
 .../client/petstore/ruby-autoload/lib/petstore/models/client.rb | 2 +-
 .../ruby-autoload/lib/petstore/models/deprecated_object.rb      | 2 +-
 .../client/petstore/ruby-autoload/lib/petstore/models/dog.rb    | 2 +-
 .../petstore/ruby-autoload/lib/petstore/models/enum_arrays.rb   | 2 +-
 .../petstore/ruby-autoload/lib/petstore/models/enum_test.rb     | 2 +-
 .../lib/petstore/models/fake_big_decimal_map200_response.rb     | 2 +-
 .../client/petstore/ruby-autoload/lib/petstore/models/file.rb   | 2 +-
 .../ruby-autoload/lib/petstore/models/file_schema_test_class.rb | 2 +-
 .../client/petstore/ruby-autoload/lib/petstore/models/foo.rb    | 2 +-
 .../lib/petstore/models/foo_get_default_response.rb             | 2 +-
 .../petstore/ruby-autoload/lib/petstore/models/format_test.rb   | 2 +-
 .../ruby-autoload/lib/petstore/models/has_only_read_only.rb     | 2 +-
 .../ruby-autoload/lib/petstore/models/health_check_result.rb    | 2 +-
 .../client/petstore/ruby-autoload/lib/petstore/models/list.rb   | 2 +-
 .../petstore/ruby-autoload/lib/petstore/models/map_test.rb      | 2 +-
 .../models/mixed_properties_and_additional_properties_class.rb  | 2 +-
 .../ruby-autoload/lib/petstore/models/model200_response.rb      | 2 +-
 .../petstore/ruby-autoload/lib/petstore/models/model_return.rb  | 2 +-
 .../client/petstore/ruby-autoload/lib/petstore/models/name.rb   | 2 +-
 .../ruby-autoload/lib/petstore/models/nullable_class.rb         | 2 +-
 .../petstore/ruby-autoload/lib/petstore/models/number_only.rb   | 2 +-
 .../lib/petstore/models/object_with_deprecated_fields.rb        | 2 +-
 .../client/petstore/ruby-autoload/lib/petstore/models/order.rb  | 2 +-
 .../ruby-autoload/lib/petstore/models/outer_composite.rb        | 2 +-
 .../lib/petstore/models/outer_object_with_enum_property.rb      | 2 +-
 .../ruby-autoload/lib/petstore/models/parent_with_nullable.rb   | 2 +-
 .../client/petstore/ruby-autoload/lib/petstore/models/pet.rb    | 2 +-
 .../ruby-autoload/lib/petstore/models/read_only_first.rb        | 2 +-
 .../ruby-autoload/lib/petstore/models/special_model_name.rb     | 2 +-
 .../client/petstore/ruby-autoload/lib/petstore/models/tag.rb    | 2 +-
 .../test_inline_freeform_additional_properties_request.rb       | 2 +-
 .../client/petstore/ruby-autoload/lib/petstore/models/user.rb   | 2 +-
 .../lib/petstore/models/additional_properties_class.rb          | 2 +-
 .../ruby-faraday/lib/petstore/models/all_of_with_single_ref.rb  | 2 +-
 .../client/petstore/ruby-faraday/lib/petstore/models/animal.rb  | 2 +-
 .../petstore/ruby-faraday/lib/petstore/models/api_response.rb   | 2 +-
 .../lib/petstore/models/array_of_array_of_number_only.rb        | 2 +-
 .../ruby-faraday/lib/petstore/models/array_of_number_only.rb    | 2 +-
 .../petstore/ruby-faraday/lib/petstore/models/array_test.rb     | 2 +-
 .../petstore/ruby-faraday/lib/petstore/models/capitalization.rb | 2 +-
 samples/client/petstore/ruby-faraday/lib/petstore/models/cat.rb | 2 +-
 .../petstore/ruby-faraday/lib/petstore/models/category.rb       | 2 +-
 .../ruby-faraday/lib/petstore/models/child_with_nullable.rb     | 2 +-
 .../petstore/ruby-faraday/lib/petstore/models/class_model.rb    | 2 +-
 .../client/petstore/ruby-faraday/lib/petstore/models/client.rb  | 2 +-
 .../ruby-faraday/lib/petstore/models/deprecated_object.rb       | 2 +-
 samples/client/petstore/ruby-faraday/lib/petstore/models/dog.rb | 2 +-
 .../petstore/ruby-faraday/lib/petstore/models/enum_arrays.rb    | 2 +-
 .../petstore/ruby-faraday/lib/petstore/models/enum_test.rb      | 2 +-
 .../lib/petstore/models/fake_big_decimal_map200_response.rb     | 2 +-
 .../client/petstore/ruby-faraday/lib/petstore/models/file.rb    | 2 +-
 .../ruby-faraday/lib/petstore/models/file_schema_test_class.rb  | 2 +-
 samples/client/petstore/ruby-faraday/lib/petstore/models/foo.rb | 2 +-
 .../lib/petstore/models/foo_get_default_response.rb             | 2 +-
 .../petstore/ruby-faraday/lib/petstore/models/format_test.rb    | 2 +-
 .../ruby-faraday/lib/petstore/models/has_only_read_only.rb      | 2 +-
 .../ruby-faraday/lib/petstore/models/health_check_result.rb     | 2 +-
 .../client/petstore/ruby-faraday/lib/petstore/models/list.rb    | 2 +-
 .../petstore/ruby-faraday/lib/petstore/models/map_test.rb       | 2 +-
 .../models/mixed_properties_and_additional_properties_class.rb  | 2 +-
 .../ruby-faraday/lib/petstore/models/model200_response.rb       | 2 +-
 .../petstore/ruby-faraday/lib/petstore/models/model_return.rb   | 2 +-
 .../client/petstore/ruby-faraday/lib/petstore/models/name.rb    | 2 +-
 .../petstore/ruby-faraday/lib/petstore/models/nullable_class.rb | 2 +-
 .../petstore/ruby-faraday/lib/petstore/models/number_only.rb    | 2 +-
 .../lib/petstore/models/object_with_deprecated_fields.rb        | 2 +-
 .../client/petstore/ruby-faraday/lib/petstore/models/order.rb   | 2 +-
 .../ruby-faraday/lib/petstore/models/outer_composite.rb         | 2 +-
 .../lib/petstore/models/outer_object_with_enum_property.rb      | 2 +-
 .../ruby-faraday/lib/petstore/models/parent_with_nullable.rb    | 2 +-
 samples/client/petstore/ruby-faraday/lib/petstore/models/pet.rb | 2 +-
 .../ruby-faraday/lib/petstore/models/read_only_first.rb         | 2 +-
 .../ruby-faraday/lib/petstore/models/special_model_name.rb      | 2 +-
 samples/client/petstore/ruby-faraday/lib/petstore/models/tag.rb | 2 +-
 .../test_inline_freeform_additional_properties_request.rb       | 2 +-
 .../client/petstore/ruby-faraday/lib/petstore/models/user.rb    | 2 +-
 .../lib/petstore/models/additional_properties_class.rb          | 2 +-
 .../ruby-httpx/lib/petstore/models/all_of_with_single_ref.rb    | 2 +-
 .../client/petstore/ruby-httpx/lib/petstore/models/animal.rb    | 2 +-
 .../petstore/ruby-httpx/lib/petstore/models/api_response.rb     | 2 +-
 .../lib/petstore/models/array_of_array_of_number_only.rb        | 2 +-
 .../ruby-httpx/lib/petstore/models/array_of_number_only.rb      | 2 +-
 .../petstore/ruby-httpx/lib/petstore/models/array_test.rb       | 2 +-
 .../petstore/ruby-httpx/lib/petstore/models/capitalization.rb   | 2 +-
 samples/client/petstore/ruby-httpx/lib/petstore/models/cat.rb   | 2 +-
 .../client/petstore/ruby-httpx/lib/petstore/models/category.rb  | 2 +-
 .../petstore/ruby-httpx/lib/petstore/models/class_model.rb      | 2 +-
 .../client/petstore/ruby-httpx/lib/petstore/models/client.rb    | 2 +-
 .../ruby-httpx/lib/petstore/models/deprecated_object.rb         | 2 +-
 samples/client/petstore/ruby-httpx/lib/petstore/models/dog.rb   | 2 +-
 .../petstore/ruby-httpx/lib/petstore/models/enum_arrays.rb      | 2 +-
 .../client/petstore/ruby-httpx/lib/petstore/models/enum_test.rb | 2 +-
 .../lib/petstore/models/fake_big_decimal_map200_response.rb     | 2 +-
 samples/client/petstore/ruby-httpx/lib/petstore/models/file.rb  | 2 +-
 .../ruby-httpx/lib/petstore/models/file_schema_test_class.rb    | 2 +-
 samples/client/petstore/ruby-httpx/lib/petstore/models/foo.rb   | 2 +-
 .../ruby-httpx/lib/petstore/models/foo_get_default_response.rb  | 2 +-
 .../petstore/ruby-httpx/lib/petstore/models/format_test.rb      | 2 +-
 .../ruby-httpx/lib/petstore/models/has_only_read_only.rb        | 2 +-
 .../ruby-httpx/lib/petstore/models/health_check_result.rb       | 2 +-
 samples/client/petstore/ruby-httpx/lib/petstore/models/list.rb  | 2 +-
 .../client/petstore/ruby-httpx/lib/petstore/models/map_test.rb  | 2 +-
 .../models/mixed_properties_and_additional_properties_class.rb  | 2 +-
 .../ruby-httpx/lib/petstore/models/model200_response.rb         | 2 +-
 .../petstore/ruby-httpx/lib/petstore/models/model_return.rb     | 2 +-
 samples/client/petstore/ruby-httpx/lib/petstore/models/name.rb  | 2 +-
 .../petstore/ruby-httpx/lib/petstore/models/nullable_class.rb   | 2 +-
 .../petstore/ruby-httpx/lib/petstore/models/number_only.rb      | 2 +-
 .../lib/petstore/models/object_with_deprecated_fields.rb        | 2 +-
 samples/client/petstore/ruby-httpx/lib/petstore/models/order.rb | 2 +-
 .../petstore/ruby-httpx/lib/petstore/models/outer_composite.rb  | 2 +-
 .../lib/petstore/models/outer_object_with_enum_property.rb      | 2 +-
 samples/client/petstore/ruby-httpx/lib/petstore/models/pet.rb   | 2 +-
 .../ruby-httpx/lib/petstore/models/property_name_mapping.rb     | 2 +-
 .../petstore/ruby-httpx/lib/petstore/models/read_only_first.rb  | 2 +-
 .../ruby-httpx/lib/petstore/models/special_model_name.rb        | 2 +-
 samples/client/petstore/ruby-httpx/lib/petstore/models/tag.rb   | 2 +-
 .../test_inline_freeform_additional_properties_request.rb       | 2 +-
 samples/client/petstore/ruby-httpx/lib/petstore/models/user.rb  | 2 +-
 samples/client/petstore/ruby-httpx/lib/petstore/models/whale.rb | 2 +-
 samples/client/petstore/ruby-httpx/lib/petstore/models/zebra.rb | 2 +-
 .../ruby/lib/petstore/models/additional_properties_class.rb     | 2 +-
 .../petstore/ruby/lib/petstore/models/all_of_with_single_ref.rb | 2 +-
 samples/client/petstore/ruby/lib/petstore/models/animal.rb      | 2 +-
 .../client/petstore/ruby/lib/petstore/models/api_response.rb    | 2 +-
 .../ruby/lib/petstore/models/array_of_array_of_number_only.rb   | 2 +-
 .../petstore/ruby/lib/petstore/models/array_of_number_only.rb   | 2 +-
 samples/client/petstore/ruby/lib/petstore/models/array_test.rb  | 2 +-
 .../client/petstore/ruby/lib/petstore/models/capitalization.rb  | 2 +-
 samples/client/petstore/ruby/lib/petstore/models/cat.rb         | 2 +-
 samples/client/petstore/ruby/lib/petstore/models/category.rb    | 2 +-
 samples/client/petstore/ruby/lib/petstore/models/class_model.rb | 2 +-
 samples/client/petstore/ruby/lib/petstore/models/client.rb      | 2 +-
 .../petstore/ruby/lib/petstore/models/deprecated_object.rb      | 2 +-
 samples/client/petstore/ruby/lib/petstore/models/dog.rb         | 2 +-
 samples/client/petstore/ruby/lib/petstore/models/enum_arrays.rb | 2 +-
 samples/client/petstore/ruby/lib/petstore/models/enum_test.rb   | 2 +-
 .../lib/petstore/models/fake_big_decimal_map200_response.rb     | 2 +-
 samples/client/petstore/ruby/lib/petstore/models/file.rb        | 2 +-
 .../petstore/ruby/lib/petstore/models/file_schema_test_class.rb | 2 +-
 samples/client/petstore/ruby/lib/petstore/models/foo.rb         | 2 +-
 .../ruby/lib/petstore/models/foo_get_default_response.rb        | 2 +-
 samples/client/petstore/ruby/lib/petstore/models/format_test.rb | 2 +-
 .../petstore/ruby/lib/petstore/models/has_only_read_only.rb     | 2 +-
 .../petstore/ruby/lib/petstore/models/health_check_result.rb    | 2 +-
 samples/client/petstore/ruby/lib/petstore/models/list.rb        | 2 +-
 samples/client/petstore/ruby/lib/petstore/models/map_test.rb    | 2 +-
 .../models/mixed_properties_and_additional_properties_class.rb  | 2 +-
 .../petstore/ruby/lib/petstore/models/model200_response.rb      | 2 +-
 .../client/petstore/ruby/lib/petstore/models/model_return.rb    | 2 +-
 samples/client/petstore/ruby/lib/petstore/models/name.rb        | 2 +-
 .../client/petstore/ruby/lib/petstore/models/nullable_class.rb  | 2 +-
 samples/client/petstore/ruby/lib/petstore/models/number_only.rb | 2 +-
 .../ruby/lib/petstore/models/object_with_deprecated_fields.rb   | 2 +-
 samples/client/petstore/ruby/lib/petstore/models/order.rb       | 2 +-
 .../client/petstore/ruby/lib/petstore/models/outer_composite.rb | 2 +-
 .../ruby/lib/petstore/models/outer_object_with_enum_property.rb | 2 +-
 samples/client/petstore/ruby/lib/petstore/models/pet.rb         | 2 +-
 .../petstore/ruby/lib/petstore/models/property_name_mapping.rb  | 2 +-
 .../client/petstore/ruby/lib/petstore/models/read_only_first.rb | 2 +-
 .../petstore/ruby/lib/petstore/models/special_model_name.rb     | 2 +-
 samples/client/petstore/ruby/lib/petstore/models/tag.rb         | 2 +-
 .../test_inline_freeform_additional_properties_request.rb       | 2 +-
 samples/client/petstore/ruby/lib/petstore/models/user.rb        | 2 +-
 samples/client/petstore/ruby/lib/petstore/models/whale.rb       | 2 +-
 samples/client/petstore/ruby/lib/petstore/models/zebra.rb       | 2 +-
 .../ruby-client/lib/petstore/models/array_alias.rb              | 2 +-
 .../ruby-client/lib/petstore/models/map_alias.rb                | 2 +-
 190 files changed, 190 insertions(+), 190 deletions(-)

diff --git a/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/bird.rb b/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/bird.rb
index 36503338037b..1f37cc5303bc 100644
--- a/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/bird.rb
+++ b/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/bird.rb
@@ -168,7 +168,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = OpenapiClient.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/category.rb b/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/category.rb
index d8433b0236d6..5b0c11a21b16 100644
--- a/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/category.rb
+++ b/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/category.rb
@@ -168,7 +168,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = OpenapiClient.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/data_query.rb b/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/data_query.rb
index 9fd58e63b275..05c6998147b4 100644
--- a/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/data_query.rb
+++ b/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/data_query.rb
@@ -213,7 +213,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = OpenapiClient.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/default_value.rb b/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/default_value.rb
index 957a945a2fc5..d7b6dcfbfcbc 100644
--- a/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/default_value.rb
+++ b/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/default_value.rb
@@ -262,7 +262,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = OpenapiClient.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/number_properties_only.rb b/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/number_properties_only.rb
index d4b05f3c1aa6..6f513deaabf4 100644
--- a/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/number_properties_only.rb
+++ b/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/number_properties_only.rb
@@ -205,7 +205,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = OpenapiClient.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/pet.rb b/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/pet.rb
index a37a969818cc..77becada3748 100644
--- a/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/pet.rb
+++ b/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/pet.rb
@@ -257,7 +257,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = OpenapiClient.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/query.rb b/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/query.rb
index 0bf87a363177..c5e4fdb1ac23 100644
--- a/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/query.rb
+++ b/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/query.rb
@@ -193,7 +193,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = OpenapiClient.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/tag.rb b/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/tag.rb
index 58dfc611926b..91a2c09b1b73 100644
--- a/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/tag.rb
+++ b/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/tag.rb
@@ -168,7 +168,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = OpenapiClient.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/test_query_style_deep_object_explode_true_object_all_of_query_object_parameter.rb b/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/test_query_style_deep_object_explode_true_object_all_of_query_object_parameter.rb
index 47baf2203b0c..82f86babbd7c 100644
--- a/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/test_query_style_deep_object_explode_true_object_all_of_query_object_parameter.rb
+++ b/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/test_query_style_deep_object_explode_true_object_all_of_query_object_parameter.rb
@@ -194,7 +194,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = OpenapiClient.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/test_query_style_form_explode_true_array_string_query_object_parameter.rb b/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/test_query_style_form_explode_true_array_string_query_object_parameter.rb
index 50c87fbae0e8..d431a3838091 100644
--- a/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/test_query_style_form_explode_true_array_string_query_object_parameter.rb
+++ b/samples/client/echo_api/ruby-httpx/lib/openapi_client/models/test_query_style_form_explode_true_array_string_query_object_parameter.rb
@@ -161,7 +161,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = OpenapiClient.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/additional_properties_class.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/additional_properties_class.rb
index c28fba75cbf2..9a13c80144b1 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/additional_properties_class.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/additional_properties_class.rb
@@ -172,7 +172,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/all_of_with_single_ref.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/all_of_with_single_ref.rb
index 99c49ee3e411..f78444daf8cb 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/all_of_with_single_ref.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/all_of_with_single_ref.rb
@@ -190,7 +190,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/animal.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/animal.rb
index 38c3e4ae50cc..e3361c87095c 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/animal.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/animal.rb
@@ -182,7 +182,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/api_response.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/api_response.rb
index 3f05081ca8f5..bc6b1d172898 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/api_response.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/api_response.rb
@@ -177,7 +177,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/array_of_array_of_number_only.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/array_of_array_of_number_only.rb
index e3fc21969343..1dbbb31b9cf5 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/array_of_array_of_number_only.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/array_of_array_of_number_only.rb
@@ -161,7 +161,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/array_of_number_only.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/array_of_number_only.rb
index c84931a3d2c8..ebae432603d0 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/array_of_number_only.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/array_of_number_only.rb
@@ -161,7 +161,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/array_test.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/array_test.rb
index 3d4fe2a619b7..3f34a2f0c9fc 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/array_test.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/array_test.rb
@@ -211,7 +211,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/capitalization.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/capitalization.rb
index 535ca7697ba4..cc44f62bc290 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/capitalization.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/capitalization.rb
@@ -205,7 +205,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/cat.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/cat.rb
index ddc6268f1752..0ed7b425052a 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/cat.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/cat.rb
@@ -170,7 +170,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/category.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/category.rb
index 029ecca4bf60..27c3c33dd4b9 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/category.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/category.rb
@@ -175,7 +175,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/child_with_nullable.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/child_with_nullable.rb
index a40a99e9b457..c204839f58a2 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/child_with_nullable.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/child_with_nullable.rb
@@ -192,7 +192,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/class_model.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/class_model.rb
index a69c0c3d8b18..6188275ce725 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/class_model.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/class_model.rb
@@ -160,7 +160,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/client.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/client.rb
index d100b51d25eb..d44afe48d02d 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/client.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/client.rb
@@ -159,7 +159,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/deprecated_object.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/deprecated_object.rb
index c13b9812ce80..687e287a9f3a 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/deprecated_object.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/deprecated_object.rb
@@ -159,7 +159,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/dog.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/dog.rb
index baf8aed83aee..a96fdf0e8f10 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/dog.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/dog.rb
@@ -170,7 +170,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/enum_arrays.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/enum_arrays.rb
index b53d022ccbed..886a8b6187d6 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/enum_arrays.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/enum_arrays.rb
@@ -204,7 +204,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/enum_test.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/enum_test.rb
index f71d804b6d59..0044f725aada 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/enum_test.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/enum_test.rb
@@ -304,7 +304,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/fake_big_decimal_map200_response.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/fake_big_decimal_map200_response.rb
index 2e84764f47fd..fbb765bc8aa9 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/fake_big_decimal_map200_response.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/fake_big_decimal_map200_response.rb
@@ -170,7 +170,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/file.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/file.rb
index af161d8f6319..0c1528bef472 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/file.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/file.rb
@@ -161,7 +161,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/file_schema_test_class.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/file_schema_test_class.rb
index b4cc94be47b5..f7e73e61115a 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/file_schema_test_class.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/file_schema_test_class.rb
@@ -170,7 +170,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/foo.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/foo.rb
index 76988fd3cd5c..fc1f487ed3c8 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/foo.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/foo.rb
@@ -161,7 +161,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/foo_get_default_response.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/foo_get_default_response.rb
index d50fec9cd9fd..3b5eaa89714c 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/foo_get_default_response.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/foo_get_default_response.rb
@@ -159,7 +159,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/format_test.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/format_test.rb
index f6da236ae5b7..d6d896697492 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/format_test.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/format_test.rb
@@ -555,7 +555,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/has_only_read_only.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/has_only_read_only.rb
index 9d82934d22e1..ca51c3140db7 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/has_only_read_only.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/has_only_read_only.rb
@@ -168,7 +168,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/health_check_result.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/health_check_result.rb
index b850e8623c68..ad397c2674be 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/health_check_result.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/health_check_result.rb
@@ -161,7 +161,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/list.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/list.rb
index ef3adc399fe4..162b2ae847bd 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/list.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/list.rb
@@ -159,7 +159,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/map_test.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/map_test.rb
index 0ced89f3c867..f2720d034106 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/map_test.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/map_test.rb
@@ -216,7 +216,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/mixed_properties_and_additional_properties_class.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/mixed_properties_and_additional_properties_class.rb
index ad1a5b472351..46cf09764cb0 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/mixed_properties_and_additional_properties_class.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/mixed_properties_and_additional_properties_class.rb
@@ -179,7 +179,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/model200_response.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/model200_response.rb
index 4d318df4c90f..3ba144401189 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/model200_response.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/model200_response.rb
@@ -169,7 +169,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/model_return.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/model_return.rb
index ef0c65b55d8e..81bc49ae63d6 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/model_return.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/model_return.rb
@@ -160,7 +160,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/name.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/name.rb
index a189793a3811..578c5975464f 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/name.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/name.rb
@@ -194,7 +194,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/nullable_class.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/nullable_class.rb
index 5748150ee607..a394b04e969a 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/nullable_class.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/nullable_class.rb
@@ -280,7 +280,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/number_only.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/number_only.rb
index 341193e3f17c..d4dfdb3058a0 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/number_only.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/number_only.rb
@@ -159,7 +159,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/object_with_deprecated_fields.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/object_with_deprecated_fields.rb
index 5df34bc5a128..c63d1e3cb3dc 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/object_with_deprecated_fields.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/object_with_deprecated_fields.rb
@@ -188,7 +188,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/order.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/order.rb
index 6d4ea1c77a7c..e620f8735703 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/order.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/order.rb
@@ -241,7 +241,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/outer_composite.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/outer_composite.rb
index bcb2334d38ad..a7117be27e91 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/outer_composite.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/outer_composite.rb
@@ -177,7 +177,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/outer_object_with_enum_property.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/outer_object_with_enum_property.rb
index 1dd612ccaca5..714d1b090786 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/outer_object_with_enum_property.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/outer_object_with_enum_property.rb
@@ -188,7 +188,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/parent_with_nullable.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/parent_with_nullable.rb
index 66ab22b8976c..f8d687a5cc80 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/parent_with_nullable.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/parent_with_nullable.rb
@@ -208,7 +208,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/pet.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/pet.rb
index e0bb197e8e69..ee6dad2719b3 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/pet.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/pet.rb
@@ -267,7 +267,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/read_only_first.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/read_only_first.rb
index 46853a3feeee..5854a0f0948d 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/read_only_first.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/read_only_first.rb
@@ -168,7 +168,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/special_model_name.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/special_model_name.rb
index 07ede6cffe38..acbb7c33a0c0 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/special_model_name.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/special_model_name.rb
@@ -159,7 +159,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/tag.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/tag.rb
index 47cc6ac04379..0fe1c80c0f51 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/tag.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/tag.rb
@@ -168,7 +168,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/test_inline_freeform_additional_properties_request.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/test_inline_freeform_additional_properties_request.rb
index bf7c0b98a134..0aa839e8d145 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/test_inline_freeform_additional_properties_request.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/test_inline_freeform_additional_properties_request.rb
@@ -159,7 +159,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-autoload/lib/petstore/models/user.rb b/samples/client/petstore/ruby-autoload/lib/petstore/models/user.rb
index 4045f639bcbf..0dd33e3d8f3b 100644
--- a/samples/client/petstore/ruby-autoload/lib/petstore/models/user.rb
+++ b/samples/client/petstore/ruby-autoload/lib/petstore/models/user.rb
@@ -223,7 +223,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/additional_properties_class.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/additional_properties_class.rb
index c28fba75cbf2..9a13c80144b1 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/additional_properties_class.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/additional_properties_class.rb
@@ -172,7 +172,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/all_of_with_single_ref.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/all_of_with_single_ref.rb
index 99c49ee3e411..f78444daf8cb 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/all_of_with_single_ref.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/all_of_with_single_ref.rb
@@ -190,7 +190,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/animal.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/animal.rb
index 38c3e4ae50cc..e3361c87095c 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/animal.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/animal.rb
@@ -182,7 +182,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/api_response.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/api_response.rb
index 3f05081ca8f5..bc6b1d172898 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/api_response.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/api_response.rb
@@ -177,7 +177,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/array_of_array_of_number_only.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/array_of_array_of_number_only.rb
index e3fc21969343..1dbbb31b9cf5 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/array_of_array_of_number_only.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/array_of_array_of_number_only.rb
@@ -161,7 +161,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/array_of_number_only.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/array_of_number_only.rb
index c84931a3d2c8..ebae432603d0 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/array_of_number_only.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/array_of_number_only.rb
@@ -161,7 +161,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/array_test.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/array_test.rb
index 3d4fe2a619b7..3f34a2f0c9fc 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/array_test.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/array_test.rb
@@ -211,7 +211,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/capitalization.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/capitalization.rb
index 535ca7697ba4..cc44f62bc290 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/capitalization.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/capitalization.rb
@@ -205,7 +205,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/cat.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/cat.rb
index ddc6268f1752..0ed7b425052a 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/cat.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/cat.rb
@@ -170,7 +170,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/category.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/category.rb
index 029ecca4bf60..27c3c33dd4b9 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/category.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/category.rb
@@ -175,7 +175,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/child_with_nullable.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/child_with_nullable.rb
index a40a99e9b457..c204839f58a2 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/child_with_nullable.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/child_with_nullable.rb
@@ -192,7 +192,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/class_model.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/class_model.rb
index a69c0c3d8b18..6188275ce725 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/class_model.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/class_model.rb
@@ -160,7 +160,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/client.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/client.rb
index d100b51d25eb..d44afe48d02d 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/client.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/client.rb
@@ -159,7 +159,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/deprecated_object.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/deprecated_object.rb
index c13b9812ce80..687e287a9f3a 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/deprecated_object.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/deprecated_object.rb
@@ -159,7 +159,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/dog.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/dog.rb
index baf8aed83aee..a96fdf0e8f10 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/dog.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/dog.rb
@@ -170,7 +170,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/enum_arrays.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/enum_arrays.rb
index b53d022ccbed..886a8b6187d6 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/enum_arrays.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/enum_arrays.rb
@@ -204,7 +204,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/enum_test.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/enum_test.rb
index f71d804b6d59..0044f725aada 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/enum_test.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/enum_test.rb
@@ -304,7 +304,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/fake_big_decimal_map200_response.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/fake_big_decimal_map200_response.rb
index 2e84764f47fd..fbb765bc8aa9 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/fake_big_decimal_map200_response.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/fake_big_decimal_map200_response.rb
@@ -170,7 +170,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/file.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/file.rb
index af161d8f6319..0c1528bef472 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/file.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/file.rb
@@ -161,7 +161,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/file_schema_test_class.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/file_schema_test_class.rb
index b4cc94be47b5..f7e73e61115a 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/file_schema_test_class.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/file_schema_test_class.rb
@@ -170,7 +170,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/foo.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/foo.rb
index 76988fd3cd5c..fc1f487ed3c8 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/foo.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/foo.rb
@@ -161,7 +161,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/foo_get_default_response.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/foo_get_default_response.rb
index d50fec9cd9fd..3b5eaa89714c 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/foo_get_default_response.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/foo_get_default_response.rb
@@ -159,7 +159,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/format_test.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/format_test.rb
index f6da236ae5b7..d6d896697492 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/format_test.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/format_test.rb
@@ -555,7 +555,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/has_only_read_only.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/has_only_read_only.rb
index 9d82934d22e1..ca51c3140db7 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/has_only_read_only.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/has_only_read_only.rb
@@ -168,7 +168,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/health_check_result.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/health_check_result.rb
index b850e8623c68..ad397c2674be 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/health_check_result.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/health_check_result.rb
@@ -161,7 +161,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/list.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/list.rb
index ef3adc399fe4..162b2ae847bd 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/list.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/list.rb
@@ -159,7 +159,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/map_test.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/map_test.rb
index 0ced89f3c867..f2720d034106 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/map_test.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/map_test.rb
@@ -216,7 +216,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/mixed_properties_and_additional_properties_class.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/mixed_properties_and_additional_properties_class.rb
index ad1a5b472351..46cf09764cb0 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/mixed_properties_and_additional_properties_class.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/mixed_properties_and_additional_properties_class.rb
@@ -179,7 +179,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/model200_response.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/model200_response.rb
index 4d318df4c90f..3ba144401189 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/model200_response.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/model200_response.rb
@@ -169,7 +169,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/model_return.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/model_return.rb
index ef0c65b55d8e..81bc49ae63d6 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/model_return.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/model_return.rb
@@ -160,7 +160,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/name.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/name.rb
index a189793a3811..578c5975464f 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/name.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/name.rb
@@ -194,7 +194,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/nullable_class.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/nullable_class.rb
index 5748150ee607..a394b04e969a 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/nullable_class.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/nullable_class.rb
@@ -280,7 +280,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/number_only.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/number_only.rb
index 341193e3f17c..d4dfdb3058a0 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/number_only.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/number_only.rb
@@ -159,7 +159,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/object_with_deprecated_fields.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/object_with_deprecated_fields.rb
index 5df34bc5a128..c63d1e3cb3dc 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/object_with_deprecated_fields.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/object_with_deprecated_fields.rb
@@ -188,7 +188,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/order.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/order.rb
index 6d4ea1c77a7c..e620f8735703 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/order.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/order.rb
@@ -241,7 +241,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/outer_composite.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/outer_composite.rb
index bcb2334d38ad..a7117be27e91 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/outer_composite.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/outer_composite.rb
@@ -177,7 +177,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/outer_object_with_enum_property.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/outer_object_with_enum_property.rb
index 1dd612ccaca5..714d1b090786 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/outer_object_with_enum_property.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/outer_object_with_enum_property.rb
@@ -188,7 +188,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/parent_with_nullable.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/parent_with_nullable.rb
index 66ab22b8976c..f8d687a5cc80 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/parent_with_nullable.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/parent_with_nullable.rb
@@ -208,7 +208,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/pet.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/pet.rb
index e0bb197e8e69..ee6dad2719b3 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/pet.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/pet.rb
@@ -267,7 +267,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/read_only_first.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/read_only_first.rb
index 46853a3feeee..5854a0f0948d 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/read_only_first.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/read_only_first.rb
@@ -168,7 +168,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/special_model_name.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/special_model_name.rb
index 07ede6cffe38..acbb7c33a0c0 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/special_model_name.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/special_model_name.rb
@@ -159,7 +159,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/tag.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/tag.rb
index 47cc6ac04379..0fe1c80c0f51 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/tag.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/tag.rb
@@ -168,7 +168,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/test_inline_freeform_additional_properties_request.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/test_inline_freeform_additional_properties_request.rb
index bf7c0b98a134..0aa839e8d145 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/test_inline_freeform_additional_properties_request.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/test_inline_freeform_additional_properties_request.rb
@@ -159,7 +159,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-faraday/lib/petstore/models/user.rb b/samples/client/petstore/ruby-faraday/lib/petstore/models/user.rb
index 4045f639bcbf..0dd33e3d8f3b 100644
--- a/samples/client/petstore/ruby-faraday/lib/petstore/models/user.rb
+++ b/samples/client/petstore/ruby-faraday/lib/petstore/models/user.rb
@@ -223,7 +223,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/additional_properties_class.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/additional_properties_class.rb
index c28fba75cbf2..9a13c80144b1 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/additional_properties_class.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/additional_properties_class.rb
@@ -172,7 +172,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/all_of_with_single_ref.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/all_of_with_single_ref.rb
index 99c49ee3e411..f78444daf8cb 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/all_of_with_single_ref.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/all_of_with_single_ref.rb
@@ -190,7 +190,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/animal.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/animal.rb
index 38c3e4ae50cc..e3361c87095c 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/animal.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/animal.rb
@@ -182,7 +182,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/api_response.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/api_response.rb
index 3f05081ca8f5..bc6b1d172898 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/api_response.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/api_response.rb
@@ -177,7 +177,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/array_of_array_of_number_only.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/array_of_array_of_number_only.rb
index e3fc21969343..1dbbb31b9cf5 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/array_of_array_of_number_only.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/array_of_array_of_number_only.rb
@@ -161,7 +161,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/array_of_number_only.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/array_of_number_only.rb
index c84931a3d2c8..ebae432603d0 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/array_of_number_only.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/array_of_number_only.rb
@@ -161,7 +161,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/array_test.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/array_test.rb
index 3d4fe2a619b7..3f34a2f0c9fc 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/array_test.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/array_test.rb
@@ -211,7 +211,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/capitalization.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/capitalization.rb
index 535ca7697ba4..cc44f62bc290 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/capitalization.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/capitalization.rb
@@ -205,7 +205,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/cat.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/cat.rb
index ddc6268f1752..0ed7b425052a 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/cat.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/cat.rb
@@ -170,7 +170,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/category.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/category.rb
index 029ecca4bf60..27c3c33dd4b9 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/category.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/category.rb
@@ -175,7 +175,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/class_model.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/class_model.rb
index a69c0c3d8b18..6188275ce725 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/class_model.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/class_model.rb
@@ -160,7 +160,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/client.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/client.rb
index d100b51d25eb..d44afe48d02d 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/client.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/client.rb
@@ -159,7 +159,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/deprecated_object.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/deprecated_object.rb
index c13b9812ce80..687e287a9f3a 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/deprecated_object.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/deprecated_object.rb
@@ -159,7 +159,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/dog.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/dog.rb
index baf8aed83aee..a96fdf0e8f10 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/dog.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/dog.rb
@@ -170,7 +170,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/enum_arrays.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/enum_arrays.rb
index b53d022ccbed..886a8b6187d6 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/enum_arrays.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/enum_arrays.rb
@@ -204,7 +204,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/enum_test.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/enum_test.rb
index f71d804b6d59..0044f725aada 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/enum_test.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/enum_test.rb
@@ -304,7 +304,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/fake_big_decimal_map200_response.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/fake_big_decimal_map200_response.rb
index 2e84764f47fd..fbb765bc8aa9 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/fake_big_decimal_map200_response.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/fake_big_decimal_map200_response.rb
@@ -170,7 +170,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/file.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/file.rb
index af161d8f6319..0c1528bef472 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/file.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/file.rb
@@ -161,7 +161,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/file_schema_test_class.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/file_schema_test_class.rb
index b4cc94be47b5..f7e73e61115a 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/file_schema_test_class.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/file_schema_test_class.rb
@@ -170,7 +170,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/foo.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/foo.rb
index 76988fd3cd5c..fc1f487ed3c8 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/foo.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/foo.rb
@@ -161,7 +161,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/foo_get_default_response.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/foo_get_default_response.rb
index d50fec9cd9fd..3b5eaa89714c 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/foo_get_default_response.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/foo_get_default_response.rb
@@ -159,7 +159,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/format_test.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/format_test.rb
index f6da236ae5b7..d6d896697492 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/format_test.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/format_test.rb
@@ -555,7 +555,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/has_only_read_only.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/has_only_read_only.rb
index 9d82934d22e1..ca51c3140db7 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/has_only_read_only.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/has_only_read_only.rb
@@ -168,7 +168,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/health_check_result.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/health_check_result.rb
index b850e8623c68..ad397c2674be 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/health_check_result.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/health_check_result.rb
@@ -161,7 +161,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/list.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/list.rb
index ef3adc399fe4..162b2ae847bd 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/list.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/list.rb
@@ -159,7 +159,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/map_test.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/map_test.rb
index 0ced89f3c867..f2720d034106 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/map_test.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/map_test.rb
@@ -216,7 +216,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/mixed_properties_and_additional_properties_class.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/mixed_properties_and_additional_properties_class.rb
index ad1a5b472351..46cf09764cb0 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/mixed_properties_and_additional_properties_class.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/mixed_properties_and_additional_properties_class.rb
@@ -179,7 +179,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/model200_response.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/model200_response.rb
index 4d318df4c90f..3ba144401189 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/model200_response.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/model200_response.rb
@@ -169,7 +169,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/model_return.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/model_return.rb
index ef0c65b55d8e..81bc49ae63d6 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/model_return.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/model_return.rb
@@ -160,7 +160,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/name.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/name.rb
index a189793a3811..578c5975464f 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/name.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/name.rb
@@ -194,7 +194,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/nullable_class.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/nullable_class.rb
index 5748150ee607..a394b04e969a 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/nullable_class.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/nullable_class.rb
@@ -280,7 +280,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/number_only.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/number_only.rb
index 341193e3f17c..d4dfdb3058a0 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/number_only.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/number_only.rb
@@ -159,7 +159,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/object_with_deprecated_fields.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/object_with_deprecated_fields.rb
index 5df34bc5a128..c63d1e3cb3dc 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/object_with_deprecated_fields.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/object_with_deprecated_fields.rb
@@ -188,7 +188,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/order.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/order.rb
index 6d4ea1c77a7c..e620f8735703 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/order.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/order.rb
@@ -241,7 +241,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/outer_composite.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/outer_composite.rb
index bcb2334d38ad..a7117be27e91 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/outer_composite.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/outer_composite.rb
@@ -177,7 +177,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/outer_object_with_enum_property.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/outer_object_with_enum_property.rb
index 1dd612ccaca5..714d1b090786 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/outer_object_with_enum_property.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/outer_object_with_enum_property.rb
@@ -188,7 +188,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/pet.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/pet.rb
index e0bb197e8e69..ee6dad2719b3 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/pet.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/pet.rb
@@ -267,7 +267,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/property_name_mapping.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/property_name_mapping.rb
index a9e15d67141e..f46c572008a2 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/property_name_mapping.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/property_name_mapping.rb
@@ -186,7 +186,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/read_only_first.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/read_only_first.rb
index 46853a3feeee..5854a0f0948d 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/read_only_first.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/read_only_first.rb
@@ -168,7 +168,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/special_model_name.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/special_model_name.rb
index 07ede6cffe38..acbb7c33a0c0 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/special_model_name.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/special_model_name.rb
@@ -159,7 +159,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/tag.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/tag.rb
index 47cc6ac04379..0fe1c80c0f51 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/tag.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/tag.rb
@@ -168,7 +168,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/test_inline_freeform_additional_properties_request.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/test_inline_freeform_additional_properties_request.rb
index bf7c0b98a134..0aa839e8d145 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/test_inline_freeform_additional_properties_request.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/test_inline_freeform_additional_properties_request.rb
@@ -159,7 +159,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/user.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/user.rb
index 4045f639bcbf..0dd33e3d8f3b 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/user.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/user.rb
@@ -223,7 +223,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/whale.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/whale.rb
index 7127a617e73f..0482e5674146 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/whale.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/whale.rb
@@ -184,7 +184,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby-httpx/lib/petstore/models/zebra.rb b/samples/client/petstore/ruby-httpx/lib/petstore/models/zebra.rb
index 6767c534c330..b6583e605080 100644
--- a/samples/client/petstore/ruby-httpx/lib/petstore/models/zebra.rb
+++ b/samples/client/petstore/ruby-httpx/lib/petstore/models/zebra.rb
@@ -209,7 +209,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/additional_properties_class.rb b/samples/client/petstore/ruby/lib/petstore/models/additional_properties_class.rb
index c28fba75cbf2..9a13c80144b1 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/additional_properties_class.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/additional_properties_class.rb
@@ -172,7 +172,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/all_of_with_single_ref.rb b/samples/client/petstore/ruby/lib/petstore/models/all_of_with_single_ref.rb
index 99c49ee3e411..f78444daf8cb 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/all_of_with_single_ref.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/all_of_with_single_ref.rb
@@ -190,7 +190,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/animal.rb b/samples/client/petstore/ruby/lib/petstore/models/animal.rb
index 38c3e4ae50cc..e3361c87095c 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/animal.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/animal.rb
@@ -182,7 +182,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/api_response.rb b/samples/client/petstore/ruby/lib/petstore/models/api_response.rb
index 3f05081ca8f5..bc6b1d172898 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/api_response.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/api_response.rb
@@ -177,7 +177,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/array_of_array_of_number_only.rb b/samples/client/petstore/ruby/lib/petstore/models/array_of_array_of_number_only.rb
index e3fc21969343..1dbbb31b9cf5 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/array_of_array_of_number_only.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/array_of_array_of_number_only.rb
@@ -161,7 +161,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/array_of_number_only.rb b/samples/client/petstore/ruby/lib/petstore/models/array_of_number_only.rb
index c84931a3d2c8..ebae432603d0 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/array_of_number_only.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/array_of_number_only.rb
@@ -161,7 +161,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/array_test.rb b/samples/client/petstore/ruby/lib/petstore/models/array_test.rb
index 3d4fe2a619b7..3f34a2f0c9fc 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/array_test.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/array_test.rb
@@ -211,7 +211,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/capitalization.rb b/samples/client/petstore/ruby/lib/petstore/models/capitalization.rb
index 535ca7697ba4..cc44f62bc290 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/capitalization.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/capitalization.rb
@@ -205,7 +205,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/cat.rb b/samples/client/petstore/ruby/lib/petstore/models/cat.rb
index ddc6268f1752..0ed7b425052a 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/cat.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/cat.rb
@@ -170,7 +170,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/category.rb b/samples/client/petstore/ruby/lib/petstore/models/category.rb
index 029ecca4bf60..27c3c33dd4b9 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/category.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/category.rb
@@ -175,7 +175,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/class_model.rb b/samples/client/petstore/ruby/lib/petstore/models/class_model.rb
index a69c0c3d8b18..6188275ce725 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/class_model.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/class_model.rb
@@ -160,7 +160,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/client.rb b/samples/client/petstore/ruby/lib/petstore/models/client.rb
index d100b51d25eb..d44afe48d02d 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/client.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/client.rb
@@ -159,7 +159,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/deprecated_object.rb b/samples/client/petstore/ruby/lib/petstore/models/deprecated_object.rb
index c13b9812ce80..687e287a9f3a 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/deprecated_object.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/deprecated_object.rb
@@ -159,7 +159,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/dog.rb b/samples/client/petstore/ruby/lib/petstore/models/dog.rb
index baf8aed83aee..a96fdf0e8f10 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/dog.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/dog.rb
@@ -170,7 +170,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/enum_arrays.rb b/samples/client/petstore/ruby/lib/petstore/models/enum_arrays.rb
index b53d022ccbed..886a8b6187d6 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/enum_arrays.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/enum_arrays.rb
@@ -204,7 +204,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/enum_test.rb b/samples/client/petstore/ruby/lib/petstore/models/enum_test.rb
index f71d804b6d59..0044f725aada 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/enum_test.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/enum_test.rb
@@ -304,7 +304,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/fake_big_decimal_map200_response.rb b/samples/client/petstore/ruby/lib/petstore/models/fake_big_decimal_map200_response.rb
index 2e84764f47fd..fbb765bc8aa9 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/fake_big_decimal_map200_response.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/fake_big_decimal_map200_response.rb
@@ -170,7 +170,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/file.rb b/samples/client/petstore/ruby/lib/petstore/models/file.rb
index af161d8f6319..0c1528bef472 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/file.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/file.rb
@@ -161,7 +161,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/file_schema_test_class.rb b/samples/client/petstore/ruby/lib/petstore/models/file_schema_test_class.rb
index b4cc94be47b5..f7e73e61115a 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/file_schema_test_class.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/file_schema_test_class.rb
@@ -170,7 +170,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/foo.rb b/samples/client/petstore/ruby/lib/petstore/models/foo.rb
index 76988fd3cd5c..fc1f487ed3c8 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/foo.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/foo.rb
@@ -161,7 +161,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/foo_get_default_response.rb b/samples/client/petstore/ruby/lib/petstore/models/foo_get_default_response.rb
index d50fec9cd9fd..3b5eaa89714c 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/foo_get_default_response.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/foo_get_default_response.rb
@@ -159,7 +159,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/format_test.rb b/samples/client/petstore/ruby/lib/petstore/models/format_test.rb
index f6da236ae5b7..d6d896697492 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/format_test.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/format_test.rb
@@ -555,7 +555,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/has_only_read_only.rb b/samples/client/petstore/ruby/lib/petstore/models/has_only_read_only.rb
index 9d82934d22e1..ca51c3140db7 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/has_only_read_only.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/has_only_read_only.rb
@@ -168,7 +168,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/health_check_result.rb b/samples/client/petstore/ruby/lib/petstore/models/health_check_result.rb
index b850e8623c68..ad397c2674be 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/health_check_result.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/health_check_result.rb
@@ -161,7 +161,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/list.rb b/samples/client/petstore/ruby/lib/petstore/models/list.rb
index ef3adc399fe4..162b2ae847bd 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/list.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/list.rb
@@ -159,7 +159,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/map_test.rb b/samples/client/petstore/ruby/lib/petstore/models/map_test.rb
index 0ced89f3c867..f2720d034106 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/map_test.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/map_test.rb
@@ -216,7 +216,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/mixed_properties_and_additional_properties_class.rb b/samples/client/petstore/ruby/lib/petstore/models/mixed_properties_and_additional_properties_class.rb
index ad1a5b472351..46cf09764cb0 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/mixed_properties_and_additional_properties_class.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/mixed_properties_and_additional_properties_class.rb
@@ -179,7 +179,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/model200_response.rb b/samples/client/petstore/ruby/lib/petstore/models/model200_response.rb
index 4d318df4c90f..3ba144401189 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/model200_response.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/model200_response.rb
@@ -169,7 +169,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/model_return.rb b/samples/client/petstore/ruby/lib/petstore/models/model_return.rb
index ef0c65b55d8e..81bc49ae63d6 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/model_return.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/model_return.rb
@@ -160,7 +160,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/name.rb b/samples/client/petstore/ruby/lib/petstore/models/name.rb
index a189793a3811..578c5975464f 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/name.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/name.rb
@@ -194,7 +194,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/nullable_class.rb b/samples/client/petstore/ruby/lib/petstore/models/nullable_class.rb
index 5748150ee607..a394b04e969a 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/nullable_class.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/nullable_class.rb
@@ -280,7 +280,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/number_only.rb b/samples/client/petstore/ruby/lib/petstore/models/number_only.rb
index 341193e3f17c..d4dfdb3058a0 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/number_only.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/number_only.rb
@@ -159,7 +159,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/object_with_deprecated_fields.rb b/samples/client/petstore/ruby/lib/petstore/models/object_with_deprecated_fields.rb
index 5df34bc5a128..c63d1e3cb3dc 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/object_with_deprecated_fields.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/object_with_deprecated_fields.rb
@@ -188,7 +188,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/order.rb b/samples/client/petstore/ruby/lib/petstore/models/order.rb
index 6d4ea1c77a7c..e620f8735703 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/order.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/order.rb
@@ -241,7 +241,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/outer_composite.rb b/samples/client/petstore/ruby/lib/petstore/models/outer_composite.rb
index bcb2334d38ad..a7117be27e91 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/outer_composite.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/outer_composite.rb
@@ -177,7 +177,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/outer_object_with_enum_property.rb b/samples/client/petstore/ruby/lib/petstore/models/outer_object_with_enum_property.rb
index 1dd612ccaca5..714d1b090786 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/outer_object_with_enum_property.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/outer_object_with_enum_property.rb
@@ -188,7 +188,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/pet.rb b/samples/client/petstore/ruby/lib/petstore/models/pet.rb
index e0bb197e8e69..ee6dad2719b3 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/pet.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/pet.rb
@@ -267,7 +267,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/property_name_mapping.rb b/samples/client/petstore/ruby/lib/petstore/models/property_name_mapping.rb
index d565c9619833..0f9651b4a368 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/property_name_mapping.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/property_name_mapping.rb
@@ -186,7 +186,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/read_only_first.rb b/samples/client/petstore/ruby/lib/petstore/models/read_only_first.rb
index 46853a3feeee..5854a0f0948d 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/read_only_first.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/read_only_first.rb
@@ -168,7 +168,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/special_model_name.rb b/samples/client/petstore/ruby/lib/petstore/models/special_model_name.rb
index 07ede6cffe38..acbb7c33a0c0 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/special_model_name.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/special_model_name.rb
@@ -159,7 +159,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/tag.rb b/samples/client/petstore/ruby/lib/petstore/models/tag.rb
index 47cc6ac04379..0fe1c80c0f51 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/tag.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/tag.rb
@@ -168,7 +168,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/test_inline_freeform_additional_properties_request.rb b/samples/client/petstore/ruby/lib/petstore/models/test_inline_freeform_additional_properties_request.rb
index bf7c0b98a134..0aa839e8d145 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/test_inline_freeform_additional_properties_request.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/test_inline_freeform_additional_properties_request.rb
@@ -159,7 +159,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/user.rb b/samples/client/petstore/ruby/lib/petstore/models/user.rb
index 4045f639bcbf..0dd33e3d8f3b 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/user.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/user.rb
@@ -223,7 +223,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/whale.rb b/samples/client/petstore/ruby/lib/petstore/models/whale.rb
index 7127a617e73f..0482e5674146 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/whale.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/whale.rb
@@ -184,7 +184,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/client/petstore/ruby/lib/petstore/models/zebra.rb b/samples/client/petstore/ruby/lib/petstore/models/zebra.rb
index 6767c534c330..b6583e605080 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/zebra.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/zebra.rb
@@ -209,7 +209,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/openapi3/client/features/generate-alias-as-model/ruby-client/lib/petstore/models/array_alias.rb b/samples/openapi3/client/features/generate-alias-as-model/ruby-client/lib/petstore/models/array_alias.rb
index 569146fac473..7ade579eaf2a 100644
--- a/samples/openapi3/client/features/generate-alias-as-model/ruby-client/lib/petstore/models/array_alias.rb
+++ b/samples/openapi3/client/features/generate-alias-as-model/ruby-client/lib/petstore/models/array_alias.rb
@@ -154,7 +154,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
diff --git a/samples/openapi3/client/features/generate-alias-as-model/ruby-client/lib/petstore/models/map_alias.rb b/samples/openapi3/client/features/generate-alias-as-model/ruby-client/lib/petstore/models/map_alias.rb
index e12a9e974d3d..18e14db1d742 100644
--- a/samples/openapi3/client/features/generate-alias-as-model/ruby-client/lib/petstore/models/map_alias.rb
+++ b/samples/openapi3/client/features/generate-alias-as-model/ruby-client/lib/petstore/models/map_alias.rb
@@ -150,7 +150,7 @@ def self._deserialize(type, value)
       else # model
         # models (e.g. Pet) or oneOf
         klass = Petstore.const_get(type)
-        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
+        klass.respond_to?(:openapi_any_of) || klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end