docs: def ackSoon(self):
          """
          Emit an acknowledgement packet soon.
          """
          if self._ackTimer is None:
              def originateAck():
                  self._ackTimer = None
                  self.originate(ack=True)
              self._ackTimer = reactor.callLater(0.1, originateAck)
          else:
              self._ackTimer.reset(ACK_DELAY)