def host_power_action(self, action):
        if action in ("reboot", "shutdown"):
            return self._host.host_power_action(action)
        else:
            msg = _("Host startup on XenServer is not supported.")
            raise NotImplementedError(msg)
When called with L{NewsBuilder._FEATURE}, L{NewsBuilder._findChanges}
dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/virt/xenapi/driver.py/XenAPIDriver.host_power_action--crossover with--dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/python/test/test_release.py/NewsBuilderTests.test_findFeatures