def __init__(self, ready):
        """
        @param ready: A L{Deferred} which should be fired when
            I{serviceStarted} happens.
        """
        SSHConnection.__init__(self)
        self._ready = ready

        @param ready: A L{Deferred} which should be fired when
            I{serviceStarted} happens.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/conch/endpoints.py