def fileDescriptorReceived(descriptor):
        """
        Called when a file descriptor is received over the connection.

        @param descriptor: The descriptor which was received.
        @type descriptor: C{int}

        @return: L{None}
        """

        Called when a file descriptor is received over the connection.

        @param descriptor: The descriptor which was received.
        @type descriptor: C{int}

        @return: L{None}
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/internet/interfaces.py