def process_exception(self, request, exception):
        revision_context_manager.invalidate()
        self._close_revision(request)
Returns True if this cmdset contains the given command (as
dataset/ETHPy150Open etianen/django-reversion/src/reversion/middleware.py/RevisionMiddleware.process_exception--crossover with--dataset/ETHPy150Open evennia/evennia/evennia/commands/cmdset.py/CmdSet.__contains__