def keys(self):
        with self.lock:
            return self.tbl.keys()
Test RemovePreferredNetwork with a bad interface and network.
dataset/ETHPy150Open ejeschke/ginga/ginga/misc/Bunch.py/threadSafeBunch.keys--crossover with--dataset/ETHPy150Open google/macops/gmacpyutil/gmacpyutil/wifi_network_order_test.py/WifiNetworkOrderModuleTest.testRemovePreferredNetworkFailure