def METHOD_NAME(self) -> Optional[StateVector]:
    """The sensor velocity on a 3D Cartesian plane, expressed as a 3x1 :class:`StateVector`
    of Cartesian coordinates in the order :math:`x,y,z`.
    .. note::
        This property delegates the actual calculation of velocity to the Sensor's
        :attr:`movement_controller`
        It is settable if, and only if, the sensor holds its own internal movement_controller
        which is a :class:`~.MovingMovable`."""
    return self.movement_controller.METHOD_NAME