private static int OnAuthSuccessCallback(IntPtr auth, IntPtr success)
        {
            NowAuth nowAuth = (NowAuth)auth;

            nowAuth?.OnAuthSuccess?.Invoke(nowAuth);
            return(1);
        }
        private static int OnClientBeginCallback(IntPtr auth)
        {
            NowAuth nowAuth = (NowAuth)auth;

            nowAuth?.OnAuthBegin?.Invoke(nowAuth);
            return(1);
        }