def GetTestClassModule(self):
    raise NotImplementedError('Must implement GetTestClassModule')
Return agent gw port if exist, or None otherwise.
dataset/ETHPy150Open google/simian/src/tests/simian/mac/common/test_base.py/RequestHandlerTest.GetTestClassModule--crossover with--dataset/ETHPy150Open openstack/neutron/neutron/db/l3_dvr_db.py/L3_NAT_with_dvr_db_mixin._get_agent_gw_ports_exist_for_network