def afterDaemonize():
        """
        Hook to be called immediately after daemonization. This may only be
        called after L{beforeDaemonize} had been called previously.

        @return: L{None}.
        """

        Hook to be called immediately after daemonization. This may only be
        called after L{beforeDaemonize} had been called previously.

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