def clientConnected(self, proto):
        """
        Called when a client connects to the bus. This method assigns the
        new connection a unique bus name.
        """
        proto.uniqueName = ':1.%d' % (self.next_id,)
        self.next_id += 1
        self.clients[proto.uniqueName] = proto
Called when a client connects to the bus. This method assigns the
        new connection a unique bus name.