def exception(self, codes, msg, **args):
        """@messageCatalog=[]"""
        self.log('CRITICAL', codes, msg, **args)
Retrieves an item or slice from the set of results.
dataset/ETHPy150Open Arelle/Arelle/arelle/ModelXbrl.py/ModelXbrl.exception--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/db/models/query.py/QuerySet.__getitem__