public AboNavigationManager(NavigationBuilder navigationBuilder, 
     PopupController popupController,
     AccountManager accountManager)
     : base(navigationBuilder, popupController)
 {
     _accountManager = accountManager;
 }
 protected NavigationManagerBase(NavigationBuilder navigationBuilder, PopupController popupController)
 {
     _navigationBuilder = navigationBuilder;
     _popupController = popupController;
 }