Main {
{{
  static ClassGraph cg;
  public static void main(String args[]) throws Exception {
    cg = new ClassGraph(true, false);
    ClassGraph cgWT = new ClassGraph(Main.cg,
	 "from Input bypassing -> *,tail,* to *");
    cg = cgWT;
    Input c = Input.parse(System.in);
    c.display();
    System.out.println();
    System.out.println("original Input-object");
    c.print();
    System.out.println();
    c.normals();
    c.normals2();
    c.updateInput();
    c.print();
    System.out.println();
    c.normals();
    c.normals2();
    System.out.println();
    TraversalGraph tg = new TraversalGraph(
      "from Input via Provided to Normal", cg);
    System.out.println(tg);

    System.out.println(" done ");
  }
}}
}

Input {
  void display() to * (DisplayVisitor);
  void print() to * (PrintVisitor);
}
Normal {
  void print() to * (PrintVisitor);
}

Input {
{{
  void normals(){
    System.out.println(" all Normal objects reachable from Input ");
    Main.cg.traverse(this,"from Input to Normal", 
      new Visitor() {
	public void before (Normal host) {
	  host.print();
          System.out.println();
        }
      });
  }
  void normals2(){
    System.out.println(" all Normal objects reachable from Input  version 2");
    List lstNormals = Main.cg.gather(this, "from Input to Normal");
    Iterator iter = lstNormals.iterator();
    while (iter.hasNext()) {
      Normal host = (Normal) iter.next();
      host.print();
      System.out.println();
    }
  }

  void updateInput(){
    System.out.println(" update Provided: add one Normal-object ");
    Main.cg.traverse(this,"from Input to Provided", 
      new Visitor() {
	public void before (Provided host) {
	  host.get_fms().addElement(new Normal());
        }
      });
  }

}}
}