def save(self):
        d = dict(self)
        old_dict = d.copy()
        _id = self.collection.save(d)
        self._id = _id
        self.on_save(old_dict)
        return self._id
Adds a subscriber to a subscriber list.
dataset/ETHPy150Open tevino/mongu/mongu.py/Model.save--crossover with--dataset/ETHPy150Open campaignmonitor/createsend-python/createsend/subscriber.py/Subscriber.add