def _aa_description(self):
        pass
Cancelling the connect method's Deferred cancels the connection's
dataset/ETHPy150Open mozilla/inventory/core/network/models.py/NetworkKeyValue._aa_description--crossover with--dataset/ETHPy150Open flowroute/txjason/txjason/tests/test_netstring.py/ClientTestCase.test_connect_cancellation