def isatty(self):
        return self.stream.isatty()
See ``test_app_state_always_and_config_always_restarted``
dataset/ETHPy150Open CleanCut/green/green/output.py/GreenStream.isatty--crossover with--dataset/ETHPy150Open ClusterHQ/flocker/flocker/node/test/test_container.py/ApplicationNodeDeployerCalculateChangesTests.test_app_state_always_and_config_never_restarted