messageService method
Get the message service interface.
Returns
RtcMessageService
object.
获取消息服务的接口指针
Returns
RtcMessageService
对象。
Implementation
@override
Future<RtcMessageService?> messageService() async {
if (_messageService != null) return _messageService;
await _invokeMethod('messageService');
_messageService = RtcMessageService();
return _messageService;
}