public class PizzaOrder {
// Fields,
constructors, property getters, setters
// as in simple
POJO
public
PizzaSize getPizzaSize() { return this.pizzaSize;}
public void
setPizzaSize(PizzaSize pizzaSize) {
this.pizzaSize
= pizzaSize;
}
public
Set<Topping> getToppings() {
return
this.toppings;
}
…
}