def id(self):
        """
        Return the fully-qualified Python name of the doctest.
        """
        testID = self._originalTest.shortDescription()
        if testID is not None:
            return testID
        return self._originalTest.id()

        Return the fully-qualified Python name of the doctest.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/trial/_asyncrunner.py