private static async IAsyncEnumerable <IResponseMessage> HandleMessage(IncomingMessage message, IValidHandle matchedHandle) { yield return(message.ReplyToChannel($"Hey @{message.Username}, how you doing?")); await Task.Delay(TimeSpan.FromSeconds(1)); yield return(message.IndicateTypingOnDirectMessage()); await Task.Delay(TimeSpan.FromSeconds(5)); yield return(message.ReplyDirectlyToUser("I know where you live...")); }