private async void GoClicked()
        {
            var validator = new QuizesPageValidator();
            var result    = validator.Validate(this);

            if (result.IsValid)
            {
                var quiz = _generator.CreateQuiz(QuestionNumber, SelectedDifficulty.QuizDifficulty, 2);
                // await Navigation.PushAsync(_container.Resolve<QuizPage>(new DependencyOverride(typeof(Quiz), quiz)));
                await _navigationService.NavigateAsync("QuizPage", new NavigationParameters()
                {
                    { "Quiz", quiz }
                });
            }
            else
            {
                //await _dialog.DisplayAlertAsync("Error", result, "Ok");
                await Ext.DisplayError(result, _dialog);
            }
        }