/// <summary>
/// 发送群消息已读回执
/// </summary>
/// <param name="tid"></param>
/// <param name="msgs"></param>
/// <param name="cb"></param>
public static void MsgAckRead(string tid, List <NIMIMMessage> msgs, TeamChangedNotificationDelegate cb)
{
var ptr = NimUtility.DelegateConverter.ConvertToIntPtr(cb);
var msgJson = NimUtility.Json.JsonParser.Serialize(msgs);
TeamNativeMethods.nim_team_msg_ack_read(tid, msgJson, null, _teamChangedCallback, ptr);
}