def __contains__(self, value):
        if not self.resolved:
            raise exc.NoResponseError(
                'this navigator has not been fetched '
                'yet, so we cannot determine if it contains a link '
                'relation')
        return value in self._links or value == self._embedded
dataset/ETHPy150Open deontologician/restnavigator/restnavigator/halnav.py/HALNavigatorBase.__contains__/operator `in` -> `==`