public void GoBack <T>() where T : IViewModelBase
{
// navigation
var dumpBefore = _backStack.Dump(ToKey);
_backStack.GoBackWhile(x => !(ExtractViewModel(x) is T));
var dumpAfter = _backStack.Dump(ToKey);
var fragmentNamesForRemove = dumpBefore.Except(dumpAfter).ToArray();
// cleanup
CurrentStore.Remove(fragmentNamesForRemove);
// show
RestoreNavigation();
}