def handoff(self, volume, destination):
        pushing = maybeDeferred(self.push, volume, destination)

        def pushed(ignored):
            remote_uuid = destination.acquire(volume)
            return volume.change_owner(remote_uuid)
        changing_owner = pushing.addCallback(pushed)
        return changing_owner
preprocess old style comments.
dataset/ETHPy150Open ClusterHQ/flocker/flocker/volume/service.py/VolumeService.handoff--crossover with--dataset/ETHPy150Open RoseOu/flasky/venv/lib/python2.7/site-packages/mako/ext/preprocessors.py/convert_comments