def _at_the_top(self):
        return not self.state_manager.get_parent_cells()
C{addExpectedFailure} works without a C{Todo}.
dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/cells/messaging.py/_BroadcastMessageMethods._at_the_top--crossover with--dataset/ETHPy150Open twisted/twisted/twisted/trial/test/test_reporter.py/AdaptedReporterTests.test_expectedFailureWithoutTodo