public Task Show(DialogNotificationOptions options, Action onDialogClosed)
        {
            Showed.Add(options);

            return(new Task(() => {}));
        }
 public void TestInitialize()
 {
     _subject = new DialogNotificationOptions();
 }
        public async Task Show(DialogNotificationOptions options, Action onDialogClosed)
        {
            Showed.Add(options);

            await Task.Run(() => { });
        }