public void cancelOrder(Order order) {
for (LineItem lineItem : order.getLineItems()) {
addProduct(order, lineItem.getProduct(), lineItem.getQuantity());
}
order.cancel();
}
public void place(Order order) {
order.place();
orderRepository.update(order);
}
public void removeProduct(Order order, Product product, int quantity) {
inventory.addProduct(product, quantity);
order.removeItem(product, quantity);
}