private async Task HandleMenuCommandAsync(Message message)
{
var user = message.From;
var chat = message.Chat;
if (MenuManager.TryGetMenu(user, chat.Id, out var menu))
{
await menu.DeleteAsync( ).ConfigureAwait(false);
MenuManager.Remove(user, chat.Id);
}
menu = new TelegramKeyboardMenu(user, chat, this);
MenuManager.AddOrUpdateMenu(menu);
await menu.DisplayAsync(new MainPage ( menu )).ConfigureAwait(false);
}