Development (#690)

* Fixed some issues

* formatted code

* updated SDK

* Updated SDK and version

* Fixed generation of lists of classes

* Fixed generation $Items classes

* Updated pubspec and changelog

* Fixed #524

* Fixed #598 Generation of query enum parameters

* Fixed conflicts

* Fixed some issues in swaggers

* Updated changelog and pubspec

* Fix #583, #637, #619 and update readme (#638)

* fix #583 and update readme

* fix #637

* fix #619

* Fixed generation of some fields

* Removed test

* Fixed classes named List

* Fixed generation of query parameters with ref default type

* Fixed generation of DateTime parameters

* Fixed generation of responses in some cases

* Some fixes

* Updated changelog and pubspec

* Implemented not nullable fields

* Fixed tests

* fixed generation of some swaggers

* Added ability to return String values

* Returned main.dart content

* Updated pubspec and changelog

* Fixed generation of required and not required fields

* Added check for object ref in body

* Fixed some things

* Fixed tests

* Fixed tests

* Fixed some things

* Updated changelog and pubspec

* Removed not needed lines in tests

* Fixed generation of nullable responses

* Added generation of DateTime

* Updated pubspec and changelog

* Fixed tests

* Fixed #669 Generation models from content schema allof

* Fixed #665 generation putIfAbsent for response from content schema

* Fixed generation of nullable and required properties

* Fixed tests

* Fixed some stuff related to nullable properties

* Updated changelog and pubspec

* Formatted code

* Formatted code

* Fixed tests

* Fixed generation of some enums inside classes

* Implemented support of exploded parameters

* Pushed constants file

* Fixed generation of allOf for request bodies

* Implemented overriden_models functionality

* Improved overriden models logic

* Fixed tests

* Updated pubspec and changelog

* Removed support of exploded parameters

* Fixed generation of patameters contains keywords

* Updated pubspec and changelog

* Fixed generation of nullable and not nullable fields

---------

Co-authored-by: Uladzimir Paliukhovich <[email protected]>
Co-authored-by: Romain <[email protected]>

lib/src/code_generators/swagger_models_generator.dart

@@ -781,7 +781,7 @@ static $returnType $fromJsonFunction($valueType? value) => $enumNameCamelCase$fr
 
     final isPropertyNullable = options.nullableModels.contains(className) ||
         refSchema?.isNullable == true ||
-        !requiredProperties.contains(propertyName);
+        !requiredProperties.contains(propertyKey);
 
     final unknownEnumValue = generateEnumValue(
       allEnumNames: allEnumNames,