@abc.abstractmethod
    def add_trigger(self, trigger):
        pass
Returns the number of unread messages for the specified user.
dataset/ETHPy150Open StackStorm/st2/st2reactor/st2reactor/sensor/base.py/BaseSensor.add_trigger--crossover with--dataset/ETHPy150Open mozilla/kitsune/kitsune/messages/utils.py/unread_count_for