code: def groups_roles(self, room_id=None, room_name=None, **kwargs):
          
          if room_id:
              return self.__call_api_get('groups.roles', roomId=room_id, kwargs=kwargs)
          elif room_name:
              return self.__call_api_get('groups.roles', roomName=room_name, kwargs=kwargs)
          else:
              raise RocketMissingParamException('roomId or room_name required')
docs: Lists all user’s roles in the private group.