成员的完整列表，这些成员属于 carla::ros2::CarlaEgoVehicleControlSubscriberImpl,包括所有继承而来的类成员

_alive	carla::ros2::CarlaEgoVehicleControlSubscriberImpl
_control	carla::ros2::CarlaEgoVehicleControlSubscriberImpl
_datareader	carla::ros2::CarlaEgoVehicleControlSubscriberImpl
_event	carla::ros2::CarlaEgoVehicleControlSubscriberImpl
_listener	carla::ros2::CarlaEgoVehicleControlSubscriberImpl
_new_message	carla::ros2::CarlaEgoVehicleControlSubscriberImpl
_participant	carla::ros2::CarlaEgoVehicleControlSubscriberImpl
_subscriber	carla::ros2::CarlaEgoVehicleControlSubscriberImpl
_topic	carla::ros2::CarlaEgoVehicleControlSubscriberImpl
_type	carla::ros2::CarlaEgoVehicleControlSubscriberImpl
_vehicle	carla::ros2::CarlaEgoVehicleControlSubscriberImpl