@property
    def key(self):
        return self._key
Similar to L{test_localDetach}, but cover the case where the removed
dataset/ETHPy150Open OneDrive/onedrive-sdk-python/src/onedrivesdk/options.py/Option.key--crossover with--dataset/ETHPy150Open twisted/nevow/nevow/test/test_athena.py/LiveMixinTestsMixin.test_localDetachWithChildren