Prism with PopupPage integration

AppWithPopupEnabledNavigationService.cs

public partial class App : PrismApplication
{
    public App(IPlatformInitializer initializer = null) : base(initializer)
    {

    }

    protected override Prism.Navigation.INavigationService CreateNavigationService()
    {
        var applicationProvider = Container.Resolve<IApplicationProvider>();

        return new PopupEnabledNavigationService(Container, applicationProvider, Logger);
    }


    protected override async void OnInitialized()
    {
        InitializeComponent();
    }

    protected override void OnStart()
    {
        base.OnStart();
    }

    protected override void RegisterTypes()
    {

    }
}

public class PopupEnabledNavigationService : DryIocPageNavigationService
{
    IPopupNavigation popupNav;

    public PopupEnabledNavigationService(IContainer container, IApplicationProvider applicationProvider, ILoggerFacade logger)
        : base(applicationProvider, container, logger)
    {
        popupNav = container.Resolve<IPopupNavigation>();
    }

    protected override Task DoPush(Xamarin.Forms.Page currentPage, Xamarin.Forms.Page page, bool? useModalNavigation, bool animated)
    {
        if (page is PopupPage)
        {
            popupNav.AddPopup((PopupPage)page);

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

        return base.DoPush(currentPage, page, useModalNavigation, animated);
    }

    public override async Task<bool> GoBackAsync(Prism.Navigation.NavigationParameters parameters = null, bool? useModalNavigation = default(bool?), bool animated = true)
    {
        var page = GetCurrentPage();

        if (page is PopupPage)
        {
            var segmentParameters = UriParsingHelper.GetSegmentParameters(null, parameters);
            segmentParameters.Add(KnownNavigationParameters.NavigationMode, NavigationMode.Back);

            var canNavigate = await PageUtilities.CanNavigateAsync(page, segmentParameters);
            if (!canNavigate)
                return false;

            PageUtilities.OnNavigatingTo(page, segmentParameters);

            popupNav.RemovePopup((PopupPage)page);

            var nav = page.BindingContext as INavigationAware;
            PageUtilities.OnNavigatedFrom(page, segmentParameters);

            var host = PageUtilities.GetCurrentPage(Application.Current.MainPage);
            PageUtilities.OnNavigatedTo(host, segmentParameters);

            return true;
        }

        return await base.GoBackAsync(parameters, useModalNavigation, animated);
    }
}