code: def get_attribute_classes() -> Dict[str, Attribute]:
      
      attribute_children = pkgutil.iter_modules(
          importlib.import_module('jawa.attributes').__path__,
          prefix='jawa.attributes.'
      )
  
      result = {}
      for _, name, _ in attribute_children:
          classes = inspect.getmembers(
              importlib.import_module(name),
              lambda c: (
                  inspect.isclass(c) and issubclass(c, Attribute) and
                  c is not Attribute
              )
          )
  
          for class_name, class_ in classes:
              attribute_name = getattr(class_, 'ATTRIBUTE_NAME', class_name[:-9])
              result[attribute_name] = class_
  
      return result
docs: Lookup all builtin Attribute subclasses, load them, and return a dict