static void Main()
{
var visitor = new CarElementPrintVisitor();
var car = new Car();
car.Accept(visitor);
}
static void Main(string[] args)
{
Wheel wheel = new Wheel();
Body body = new Body();
Engine engine = new Engine();
CarElement[] elements = new CarElement[3] {
wheel, body, engine
};
Car car = new Car(elements);
CarElementPrintVisitor visitor = new CarElementPrintVisitor();
car.accept(visitor);
}