def process(self):
        raise NotImplementedError('The process method needs to be overridden per notification backend')
handle signals and shutdown
dataset/ETHPy150Open kevinrenskers/django-generic-notifications/notifications/backend/__init__.py/BaseNotificationBackend.process--crossover with--dataset/ETHPy150Open saltstack/salt/salt/utils/master.py/ConnectedCache.signal_handler