def succeeded(self, event):
        raise NotImplementedError
Outputs the first variable passed that is not False, without escaping.
dataset/ETHPy150Open mongodb/mongo-python-driver/pymongo/monitoring.py/CommandListener.succeeded--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/template/defaulttags.py/firstof