<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def indication(self, pdu):
 """Client requests are queued for delivery."""

        if _debug: UDPDirector._debug("indication %r", pdu)

        # get the destination
        addr = pdu.pduDestination

        # get the peer
        peer = self.peers.get(addr, None)
        if not peer:
            peer = self.actorClass(self, addr)

        # send the message
        peer.indication(pdu)