public static string GetChannelUserId(this IDialogContext context)
 => context.GetChannelData()?.UserId;
        public static bool IsWechat(this IDialogContext context)
        {
            var channelData = context.GetChannelData();

            return("wechat".Equals(channelData?.Subchannel, StringComparison.InvariantCultureIgnoreCase));
        }