ShoppingCart shoppingCart = ShoppingCart.getSessionInstance(request, true);
PaymentEngine paymentEngine = shoppingCart.getPaymentEngine();
try {
ContentBean contentBean = getContentBean(request);
if (paymentEngine != null) {
paymentEngine.callBack(request, shoppingCart, contentBean);
if (paymentEngine.isProvideCustomer()) {
}
}
shoppingCart.recalculate(contentBean);
}