def getTodo(self):
        todo = util.acquireAttribute(self._parents, 'todo', None)
        if todo is None:
            return None
        return makeTodo(todo)
Override the default refresh_file_mapping to look for nova files
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/trial/unittest.py/TestCase.getTodo--crossover with--dataset/ETHPy150Open HubbleStack/Nova/_modules/hubble.py/NovaLazyLoader.refresh_file_mapping