def amp_CLOSE(self, box):
        # The connection is removed from the mapping by connectionLost.
        connection = self.connections[int(box['id'])]
        connection.connectionLost(Failure(CONNECTION_DONE))
        return AmpBox()
Respond to a CLOSE command, dumping some data onto the stream.  As with
dataset/ETHPy150Open twisted/vertex/vertex/q2q.py/Q2Q.amp_CLOSE