Version 6.4.4

Self-association fix extended to all remaining code generators, structural metamodel improvements and fixes.

Bug Fixes

Self-Association Support for All Generators (#441) - Extended the self-association fix (introduced in v6.4.3 for Java) to the Pydantic, REST API (FastAPI), and Django generators. - All generators now correctly detect when both ends of an association point to the same class and generate fields for both ends using role names. - Added dedicated test suites for each fixed generator.

Structural Metamodel Fixes - Fixed timestamp type hints from int to datetime across all metamodel class constructors. - Fixed AnyType to use PrimitiveDataType instead of DataType, consistent with all other primitive types. - Fixed Enumeration.add_literal() to correctly set literal.owner on the added literal. - Fixed test_package_initialization test that was incorrectly nested and never executed.

Improvements

DomainModel API Enhancements - Added remove_type(type_) method to remove a type from the model. - Added remove_generalization(generalization) method to remove a generalization and clean up references in involved classes. - Added add_constraint(constraint) and remove_constraint(constraint) methods for constraint management.

Docstring Cleanups - Fixed duplicate docstring entries in Class attributes. - Fixed duplicate sentence in Model docstring. - Fixed setter docstrings incorrectly saying “Get” instead of “Set” for packages and constraints. - Fixed Multiplicity docstring indentation and incorrect “Inherited from NamedElement” reference. - Removed unused from os import name import.