Send the current Crazyflie X, Y, Z position. This is going to be
        forwarded to the Crazyflie's position estimator.

def send_extpos(self, x, y, z):
        """
        Send the current Crazyflie X, Y, Z position. This is going to be
        forwarded to the Crazyflie's position estimator.
        """

        self._cf.loc.send_extpos([x, y, z])