private OrderItemDisplay createItemToDisplay(OrderItem item) {
   OrderItemDisplay itemToDisplay = new OrderItemDisplay();
   itemToDisplay.setId(item.getId());
   if (item instanceof PizzaOrderItem) {
     itemToDisplay.setItemName(((PizzaOrderItem) item).pizzaName());
     itemToDisplay.setPizzeria(((PizzaOrderItem) item).pizzeriaName());
     itemToDisplay.setIngredients(
         stringFyIngredientsList(
             ((PizzaOrderItem) item).getPizzeria_pizza().getPizza().getPizzaIngredients(),
             ((PizzaOrderItem) item).getPizzaOrderIngredients()));
   } else if (item instanceof BeverageOrderItem) {
     itemToDisplay.setItemName(((BeverageOrderItem) item).beverageName());
     itemToDisplay.setPizzeria(((BeverageOrderItem) item).pizzeriaName());
   }
   itemToDisplay.setCost(item.getCost());
   itemToDisplay.setNumber(item.getNumber());
   itemToDisplay.setImageItem("not found");
   return itemToDisplay;
 }
 private ArrayList<CartBooking> createBookingsToDisplay(Cart cart) {
   ArrayList<CartBooking> bookings = new ArrayList<>();
   int numb = 0;
   for (OrderItem item : cart.getOrderItems()) {
     boolean exist = false;
     OrderItemDisplay itemToDisplay = createItemToDisplay(item);
     for (CartBooking b : bookings) {
       if (itemToDisplay.getPizzeria() == b.getPizzeria()) {
         b.getItems().add(itemToDisplay);
         exist = true;
         break;
       }
     }
     if (!exist) {
       CartBooking booking = new CartBooking();
       booking.setIdentifier("pizzeria" + numb);
       booking.setPizzeria(itemToDisplay.getPizzeria());
       booking.getItems().add(itemToDisplay);
       bookings.add(booking);
       numb++;
     }
   }
   return bookings;
 }