def get_recipients_list(self):
        raise NotImplementedError  # Must be implemented by class using mixin
Synchronously save the dataset to disk and then shut down the server
dataset/ETHPy150Open Nomadblue/django-nomad-notifier/notifier/models.py/NotificationMixin.get_recipients_list--crossover with--dataset/ETHPy150Open deldotdr/txRedis/txredis/client.py/RedisClient.shutdown