def channelPatternUnsubscribed(self, channel, numSubscriptions):
        pass
Returns the string to use in a query when performing regular expression
dataset/ETHPy150Open deldotdr/txRedis/txredis/client.py/RedisSubscriber.channelPatternUnsubscribed--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.2/django/db/backends/__init__.py/BaseDatabaseOperations.regex_lookup