def done():
        """
        Called when the test run is complete.

        This gives the result object an opportunity to display a summary of
        information to the user. Once you have called C{done} on an
        L{IReporter} object, you should assume that the L{IReporter} object is
        no longer usable.
        """

        Called when the test run is complete.

        This gives the result object an opportunity to display a summary of
        information to the user. Once you have called C{done} on an
        L{IReporter} object, you should assume that the L{IReporter} object is
        no longer usable.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/trial/itrial.py