createTextAtMessage method Null safety

Future<V2TimValueCallback<V2TimMsgCreateInfoResult>> createTextAtMessage(
  1. {required String text,
  2. required List<String> atUserList}
)

Create text messages with @reminders (up to 8KB supported) Reminders only apply to messages sent in groups

Parameters: text text atUserList User list that needs @, if you need @ALL, please pass in kImSDK_MesssageAtALL constant string. For example, suppose the text message wants to @remind two users denny and lucy, and also wants to @everyone, atUserList passes "denny","lucy",kImSDK_MesssageAtALL array

Remark:

By default, it supports up to @30 users, after exceeding the limit, the message will fail to send. The total number of atUserList cannot exceed the default maximum, including @ALL. 
The live group (AVChatRoom) does not support sending @ messages.

Implementation

Future<V2TimValueCallback<V2TimMsgCreateInfoResult>> createTextAtMessage({
  required String text,
  required List<String> atUserList,
}) async {
  return ImFlutterPlatform.instance.createTextAtMessage(
    text: text,
    atUserList: atUserList,
  );
}