def save_file(self, file, destructive=False):
        raise NotImplemented()
Returns the reason of the presence (for groupchat)
dataset/ETHPy150Open pudo/archivekit/archivekit/store/common.py/StoreObject.save_file--crossover with--dataset/ETHPy150Open CouchPotato/CouchPotatoServer/libs/xmpp/protocol.py/Presence.getReason