def remove_actors(self, actors):
        if hasattr(actors, '__iter__'):
            for actor in actors:
                self._renderer.remove_actor(actor)
        else:
            self._renderer.remove_actor(actors)
        self.actor_removed = actors
        self.render()

    # Conevenience methods.
Test for #13085 -- __len__() returns 0
dataset/ETHPy150Open enthought/mayavi/tvtk/pyface/tvtk_scene.py/TVTKScene.remove_actors--crossover with--dataset/ETHPy150Open lionheart/django-pyodbc/tests/django16/generic_relations_regress/tests.py/GenericRelationTests.test_target_model_len_zero