def loop(self, sleep_time=0.5, callback=None):
        raise NotImplemented()
``ApplicationNodeDeployer.calculate_changes`` specifies that an
dataset/ETHPy150Open jeffh/sniffer/sniffer/scanner/base.py/BaseScanner.loop--crossover with--dataset/ETHPy150Open ClusterHQ/flocker/flocker/node/test/test_container.py/ApplicationNodeDeployerCalculateChangesTests.test_application_needs_stopping