private async void NextPageExecute(object sender)
        {
            if ((await CurrentStep.OnGoNext(new DefaultStepConfigurator(CurrentStep))) == false)
            {
                return;
            }
            TransitionType = TransitionType.Right;
#pragma warning disable 4014
            SimpleWorkAsync(async() =>
#pragma warning restore 4014
            {
                var nextStep = Steps.ElementAt(Steps.IndexOf(CurrentStep) + 1);
                await nextStep.OnEntry(Data, new DefaultStepConfigurator(nextStep));
                CurrentStep = nextStep;
            });
        }