def delete_object_in_seconds(self, cont, obj, seconds, extra_info=None):
        meta = {"X-Delete-After": seconds}
        self.set_object_metadata(cont, obj, meta, clear=True, prefix="")
:return: whether this tasks has been transferred
dataset/ETHPy150Open rackspace/pyrax/pyrax/object_storage.py/ContainerManager.delete_object_in_seconds--crossover with--dataset/ETHPy150Open shichao-an/115wangpan/u115/api.py/Task.is_transferred