partial void OnSimulateTyping(UIBarButtonItem sender)
 {
     if (CanShowTypingIndicator)
     {
         TypingIndicatorView.InsertUsername(RandomUser());
     }
 }
        void handleBotClientUserTypingMessageReceived(object sender, string e)
        {
            if (!string.IsNullOrEmpty(e))
            {
                TypingIndicatorView.InsertUsername(e);

                Task.Run(async() =>
                {
                    await Task.Delay(3000);

                    BeginInvokeOnMainThread(() => TypingIndicatorView.RemoveUsername(e));
                });
            }
        }