void ChangeViewModel(ITurboPageViewModel viewModel)
{
if (!PageViewModels.Contains(viewModel))
PageViewModels.Add(viewModel);
CurrentPageViewModel = PageViewModels
.FirstOrDefault(vm => vm == viewModel);
}
public void AddPageViewModel(ITurboPageViewModel pageViewModel)
{
if (!PageViewModels.Contains(pageViewModel))
PageViewModels.Add(pageViewModel);
if (PageViewModels.Count == 1)
CurrentPageViewModel = PageViewModels[0];
}
