OnNavigatingFrom() and OnNavigatedFrom() are called on target page when navigating backwards in stack about mytoolkit HOT 9 CLOSED

  public async void NavigateToView(IView currentView, Type newViewType, IViewContext context)
  {
     MtPageDescription pageDescription = currentView.Frame.GetNearestPageOfTypeInBackStack(newViewType);

     if (pageDescription != null)
     {
        if (currentView.Frame.CurrentPage != pageDescription)
        {
           // Remove pages from stack until reaching the desired one.
           // http://stackoverflow.com/questions/29127993/mtframe-gobacktoasync-pop-or-navigate-back-to-nth-page-without-loading-n-1-pages
           while (currentView.Frame.PreviousPage != pageDescription)
           {
              currentView.Frame.RemovePageFromStackAt(currentView.Frame.CurrentIndex - 1);
           }

           if (currentView.Frame.CanGoBack)
              // debugger stepthrough shows this is being called when nav requested from Page2 to Page1
              await currentView.Frame.GoBackAsync()
        }
     }

     await currentView.Frame.NavigateAsync(newViewType, context);
  }

 public async void NavigateToView(IView currentView, Type newViewType, IViewContext context)
 {
    MtPageDescription pageDescription = currentView.Frame.GetNearestPageOfTypeInBackStack(newViewType);

    if (pageDescription != null)
    {
       if (currentView.Frame.CurrentPage != pageDescription)
       {
          // nav backward - correct
       }
    }
    // nav forward - there should be an else wrapping the following statement
    await currentView.Frame.NavigateAsync(newViewType, context);
 }