def METHOD_NAME(self, forward=0.0, right=0.0, down=0.0, yaw=0.0):
    """
    move at specified velocity in meters/sec with absolute heading (if already in GUIDED mode)
    """
    msg = PprzMessage("datalink", "GUIDED_SETPOINT_NED")
    msg['ac_id'] = self.ac_id
    msg['flags'] = 0xE2
    msg['x'] = forward
    msg['y'] = right
    msg['z'] = down
    msg['yaw'] = yaw
    print("move at vel body: %s" % msg)
    self._interface.send_raw_datalink(msg)