code: async def release(self, task_id, *, delay=None):
          
          opts = {}
          if delay is not None:
              opts['delay'] = delay
          args = (task_id, opts)
          res = await self.conn.call(self.__funcs['release'], args)
          return self._create_task(res.body)
docs: Release task (return to queue) with delay if specified
  
              :param task_id: Task id
              :param delay: Time in seconds before task will become ready again
              :return: Task instance