def handle_label(self, label, **options):
        raise NotImplementedError()
Returns a tuple (r, i, j) such that r = gcd(a, b) = ia + jb
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/django/core/management/base.py/LabelCommand.handle_label--crossover with--dataset/ETHPy150Open CouchPotato/CouchPotatoServer/libs/rsa/common.py/extended_gcd