def connectionMade(self):
        if self.connIdentifier is None:
            def swallowKnown(err):
                err.trap(error.ConnectionDone, KeyError)
            self.retrieveConnection(self.connIdentifier, self.protoFactory).addErrback(swallowKnown)
dataset/ETHPy150Open twisted/vertex/vertex/q2q.py/Q2QBootstrap.connectionMade/operator `is not` -> `is`