def fetch_partial(self, obj, size):
        return self.fetch(obj, size=size)
Set the unique sender id of this direct message.
dataset/ETHPy150Open rackspace/pyrax/pyrax/object_storage.py/StorageObjectManager.fetch_partial--crossover with--dataset/ETHPy150Open livid/v2ex/twitter/twitter.py/DirectMessage.SetSenderId