public static void main(String[] args) {
		Visitor ceo = new VisitorCEO();
		Visitor a = new VisitorA();
		Visitor b = new VisitorB();
		Element pa = new PartA();
		Element pb = new PartB();
		ObjectStructure os = new ObjectStructure();

		os.addVisitor(pa);
		os.addVisitor(pb);
		os.accapt(ceo);
		os.accapt(a);
		os.accapt(b);
	}