[Ruby] ruby client build from hash nullable (#6945)

* Ruby Client: nullable for build_from_hash

* Generate sameples with a8eed9ce38

modules/openapi-generator/src/main/resources/ruby-client/base_object.mustache

@@ -22,7 +22,9 @@
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/additional_properties_class.rb

@@ -123,7 +123,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/animal.rb

@@ -131,7 +131,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/api_response.rb

@@ -128,7 +128,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/array_of_array_of_number_only.rb

@@ -112,7 +112,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/array_of_number_only.rb

@@ -112,7 +112,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/array_test.rb

@@ -134,7 +134,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/capitalization.rb

@@ -156,7 +156,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/cat.rb

@@ -122,7 +122,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/cat_all_of.rb

@@ -110,7 +110,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/category.rb

@@ -126,7 +126,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/class_model.rb

@@ -111,7 +111,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/client.rb

@@ -110,7 +110,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/dog.rb

@@ -122,7 +122,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/dog_all_of.rb

@@ -110,7 +110,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/enum_arrays.rb

@@ -155,7 +155,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/enum_test.rb

@@ -249,7 +249,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/file.rb

@@ -112,7 +112,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/file_schema_test_class.rb

@@ -121,7 +121,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/foo.rb

@@ -112,7 +112,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/format_test.rb

@@ -461,7 +461,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/has_only_read_only.rb

@@ -119,7 +119,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/health_check_result.rb

@@ -112,7 +112,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/inline_object.rb

@@ -121,7 +121,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/inline_object1.rb

@@ -121,7 +121,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/inline_object2.rb

@@ -159,7 +159,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/inline_object3.rb

@@ -442,7 +442,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/inline_object4.rb

@@ -131,7 +131,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/inline_object5.rb

@@ -126,7 +126,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/inline_response_default.rb

@@ -110,7 +110,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/list.rb

@@ -110,7 +110,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/map_test.rb

@@ -167,7 +167,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/mixed_properties_and_additional_properties_class.rb

@@ -130,7 +130,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/model200_response.rb

@@ -120,7 +120,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/model_return.rb

@@ -111,7 +111,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/name.rb

@@ -143,7 +143,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/nullable_class.rb

@@ -231,7 +231,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/number_only.rb

@@ -110,7 +110,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/order.rb

@@ -192,7 +192,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/outer_composite.rb

@@ -128,7 +128,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/pet.rb

@@ -204,7 +204,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/read_only_first.rb

@@ -119,7 +119,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/special_model_name.rb

@@ -110,7 +110,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/tag.rb

@@ -119,7 +119,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby-faraday/lib/petstore/models/user.rb

@@ -174,7 +174,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/additional_properties_class.rb

@@ -123,7 +123,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/animal.rb

@@ -131,7 +131,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/api_response.rb

@@ -128,7 +128,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/array_of_array_of_number_only.rb

@@ -112,7 +112,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/array_of_number_only.rb

@@ -112,7 +112,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/array_test.rb

@@ -134,7 +134,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/capitalization.rb

@@ -156,7 +156,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/cat.rb

@@ -122,7 +122,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/cat_all_of.rb

@@ -110,7 +110,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/category.rb

@@ -126,7 +126,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/class_model.rb

@@ -111,7 +111,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/client.rb

@@ -110,7 +110,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/dog.rb

@@ -122,7 +122,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/dog_all_of.rb

@@ -110,7 +110,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/enum_arrays.rb

@@ -155,7 +155,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/enum_test.rb

@@ -249,7 +249,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/file.rb

@@ -112,7 +112,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/file_schema_test_class.rb

@@ -121,7 +121,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/foo.rb

@@ -112,7 +112,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/format_test.rb

@@ -461,7 +461,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/has_only_read_only.rb

@@ -119,7 +119,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/health_check_result.rb

@@ -112,7 +112,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/inline_object.rb

@@ -121,7 +121,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/inline_object1.rb

@@ -121,7 +121,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/inline_object2.rb

@@ -159,7 +159,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/inline_object3.rb

@@ -442,7 +442,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/inline_object4.rb

@@ -131,7 +131,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/inline_object5.rb

@@ -126,7 +126,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/inline_response_default.rb

@@ -110,7 +110,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/list.rb

@@ -110,7 +110,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/map_test.rb

@@ -167,7 +167,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/mixed_properties_and_additional_properties_class.rb

@@ -130,7 +130,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/model200_response.rb

@@ -120,7 +120,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/model_return.rb

@@ -111,7 +111,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/name.rb

@@ -143,7 +143,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/nullable_class.rb

@@ -231,7 +231,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/number_only.rb

@@ -110,7 +110,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/order.rb

@@ -192,7 +192,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/outer_composite.rb

@@ -128,7 +128,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/pet.rb

@@ -204,7 +204,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/read_only_first.rb

@@ -119,7 +119,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/special_model_name.rb

@@ -110,7 +110,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/tag.rb

@@ -119,7 +119,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self

samples/client/petstore/ruby/lib/petstore/models/user.rb

@@ -174,7 +174,9 @@ module Petstore
           end
         elsif !attributes[self.class.attribute_map[key]].nil?
           self.send("#{key}=", _deserialize(type, attributes[self.class.attribute_map[key]]))
-        end # or else data not found in attributes(hash), not an issue as the data can be optional
+        elsif attributes[self.class.attribute_map[key]].nil? && self.class.openapi_nullable.include?(key)
+          self.send("#{key}=", nil)
+        end
       end
 
       self