code: def set_mode_loiter(self):
          '''enter LOITER mode'''
          if self.mavlink10():
              self.mav.command_long_send(self.target_system, self.target_component,
                                         mavlink.MAV_CMD_NAV_LOITER_UNLIM, 0, 0, 0, 0, 0, 0, 0, 0)
          else:
              MAV_ACTION_LOITER = 27
              self.mav.action_send(self.target_system, self.target_component, MAV_ACTION_LOITERf set_mode_loiter(self):
          '''enter LOITER mode'''
          if self.mavlink10():
              self.mav.command_long_send(self.target_system, self.target_component,
                                         mavlink.MAV_CMD_NAV_LOITER_UNLIM, 0, 0, 0, 0, 0, 0, 0, 0)
          else:
              MAV_ACTION_LOITER = 27
              self.mav.action_send(self.target_system, self.target_component, MAV_ACTION_LOITER)
docs: enter LOITER mode