docs: def get_types(self):
          """Gets all the known Types.
  
          return: (osid.type.TypeList) - the list of all known Types
          raise:  OperationFailed - unable to complete request
          raise:  PermissionDenied - authorization failure
          compliance: mandatory - This method must be implemented.
  
          """
          from . import types
          url_path = '/handcar/services/learning/types/'
          type_list = self._get_request(url_path)
          type_list += types.TYPES
          return objects.TypeList(type_list)