public void Execute(object parameter)
 {
     if (parameter is ViewType type)
     {
         _navigator.CurrentVM = _vmFactory.CreateVM(type);
     }
 }
 public void Execute(object parameter)
 {
     if (_authService.IsLoggedIn)
     {
         _authService.Logout();
         _navigator.CurrentVM = _vmFactory.CreateVM(ViewType.Login);
     }
 }