code: def GetNames(cls):
      
      names = []
      for plugin_class in cls._plugins.values():
        name = getattr(plugin_class, 'ARTIFACT_DEFINITION_NAME', None)
        if name:
          names.append(name)
  
      return names
docs: Retrieves the names of the registered artifact definitions.
  
      Returns:
        list[str]: registered artifact definitions names.