def clear_app_cache(self):
        self.old_app_models, cache.app_models = cache.app_models, {}
Required for commands that are capable of merging themselves.
dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/South-1.0.2/south/hacks/django_1_0.py/Hacks.clear_app_cache--crossover with--dataset/ETHPy150Open andrew-gardner/dependsworkflow/depends/depends_undo_commands.py/DagAndSceneUndoCommand.id