[python-experimental] improves type hints for arrays, and object required properties (!13299) · Merge requests · OpenAPI Tools / openapi-generator

Created by: spacether

improves type hints for arrays, and object required properties

adds type hint for array items needed in __new__ signature
adds type hints for array_model_instance[index] accessed array model items with the __getitem__ method and result type hint
type object required properties whose schemas are defined by additional_properties not correctly include a type hint to that additional_properties definition

Adds new values to an enum example

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