def get_rollback(using=None):
    return get_connection(using).get_rollback()
Create tests to verify a class provides ``IStateChange``.
dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/Django-1.6.10/django/db/transaction.py/get_rollback--crossover with--dataset/ETHPy150Open ClusterHQ/flocker/flocker/node/test/istatechange.py/make_istatechange_tests