def get_diskfile(self, device, partition, account, container, obj,
                     **kwargs):
        return self._filesystem.get_diskfile(account, container, obj, **kwargs)
test the shortcut for adding a series as bars
dataset/ETHPy150Open openstack/swift/swift/obj/mem_server.py/ObjectController.get_diskfile--crossover with--dataset/ETHPy150Open unbracketed/python-flot-utils/pyflot/tests/__init__.py/TestFlot.test_add_bars