def test_subclassAdapterRegistrationForClass(self):
        """
        Test that an adapter to a particular interface can be registered
        from both a class and its subclass.
        """
        class TheOriginal(object):
            pass
        return self._subclassAdapterRegistrationForClassOrInterface(TheOriginal)

        Test that an adapter to a particular interface can be registered
        from both a class and its subclass.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/python/test/test_components.py