code: def modify_ack_deadline(self, seconds):
          
          self._request_queue.put(
              requests.ModAckRequest(ack_id=self._ack_id, seconds=seconds)
          )
docs: Resets the deadline for acknowledgement.
  
          New deadline will be the given value of seconds from now.
  
          The default implementation handles this for you; you should not need
          to manually deal with setting ack deadlines. The exception case is
          if you are implementing your own custom subclass of
          :class:`~.pubsub_v1.subcriber._consumer.Consumer`.
  
          Args:
              seconds (int): The number of seconds to set the lease deadline
                  to. This should be between 0 and 600. Due to network latency,
                  values below 10 are advised against.