@property
    def x(self):
        return self._x
Returns the names of components referenced by the responses.
dataset/ETHPy150Open rlabbe/filterpy/filterpy/kalman/square_root.py/SquareRootKalmanFilter.x--crossover with--dataset/ETHPy150Open OpenMDAO/OpenMDAO-Framework/openmdao.main/src/openmdao/main/hasresponses.py/HasResponses.get_referenced_compnames