def listen(self, protocolFactory):
        """
        Implement L{IStreamServerEndpoint.listen} to listen on a UNIX socket.
        """
        return defer.execute(self._reactor.listenUNIX, self._address,
                             protocolFactory,
                             backlog=self._backlog,
                             mode=self._mode,
                             wantPID=self._wantPID)

        Implement L{IStreamServerEndpoint.listen} to listen on a UNIX socket.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/internet/endpoints.py