def shutdown(self, how):
        """
        Shutdown is not implemented.  The method is provided since real sockets
        have it and some code expects it.  No behavior of L{FakeSocket} is
        affected by a call to it.
        """

        Shutdown is not implemented.  The method is provided since real sockets
        have it and some code expects it.  No behavior of L{FakeSocket} is
        affected by a call to it.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/internet/test/test_tcp.py