code: def get_list_subtasks(self, list_id, completed=False):
          ''' Gets subtasks for the list with given ID '''
          return subtasks_endpoint.get_list_subtasks(self, list_id, completed=completedf get_list_subtasks(self, list_id, completed=False):
          ''' Gets subtasks for the list with given ID '''
          return subtasks_endpoint.get_list_subtasks(self, list_id, completed=completed)
docs: Gets subtasks for the list with given ID