private async Task InitClass()
        {
            lstPages = await MasterPageItem.GetPages();

            IsBusy = true;
            lstOriginalVehiculos = await CarModel.GetCars();

            lstVehiculos = new ObservableCollection <CarModel>(lstOriginalVehiculos);
            if (UserSystem.CountUserSystem() > 0)
            {
                UserSystem     usuario        = UserSystem.GetUserRealm();
                LoginViewModel loginViewModel = new LoginViewModel();
                loginViewModel.User     = usuario.Email;
                loginViewModel.Password = usuario.Pass;
                loginViewModel.Recordar = false;
                loginViewModel.Login();
            }
            IsBusy = false;
        }