def _store(self, messages, response, *args, **kwargs):
        raise NotImplementedError()
Display the usage message describing how to use owtf.
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/contrib/messages/storage/base.py/BaseStorage._store--crossover with--dataset/ETHPy150Open owtf/owtf/framework/lib/cli_options.py/usage