private void SelectPaymentMethod(PaymentMethodViewModel selectedPaymentMethodViewModel)
 {
     foreach (var paymentMethodViewModel in PaymentMethods)
     {
         paymentMethodViewModel.Selected = paymentMethodViewModel == selectedPaymentMethodViewModel;
     }
 }
        private void CardAdded(PaymentMethod paymentMethod)
        {
            var paymentMethodViewModel = new PaymentMethodViewModel(paymentMethod, PaymentMethodSelected);

            PaymentMethods.Add(paymentMethodViewModel);
            SelectPaymentMethod(paymentMethodViewModel);
            _methodSelectedCallback();
        }
 private void PaymentMethodSelected(PaymentMethodViewModel selectedPaymentMethodViewModel)
 {
     SelectPaymentMethod(selectedPaymentMethodViewModel);
     _methodSelectedCallback();
     Navigator.PaymentMethodSelected();
 }