def rotate_left(self):
        self.is_rotating = True
        self.direction = -1
``datasets_from_deployment`` does not return datasets if there are only
dataset/ETHPy150Open ardekantur/pyglet/examples/apple_remote_demo.py/Carousel.rotate_left--crossover with--dataset/ETHPy150Open ClusterHQ/flocker/flocker/control/test/test_httpapi.py/DatasetsFromDeploymentTests.test_replica_manifestations_only