public void GoBack()
{
if (IsEmptyBackStack)
{
return;
}
var canGoBack = CanGoBack;
// navigation
var currentEntry = _backStack.CurrentWithRemove();
var currentFrameName = ToKey(currentEntry);
// cleanup
CurrentStore.Remove(currentFrameName);
// show previous if needed
if (canGoBack)
{
RestoreNavigation();
}
}