public ModelDuckInfo()
 {
     QuackBehavior = new SqueakQuack();
     FlyBehavior   = new FlyNoWay();
 }
 public MallardDuckInfo()
 {
     QuackBehavior = new SqueakQuack();
     FlyBehavior   = new FlyWithWing();
 }
 public RubberDuckInfo()
 {
     QuackBehavior = new SqueakQuack();
     FlyBehavior   = new FlyNoWay();
 }