private void createDatums() {
       // bar value ise same with root2
       [b] createDatum(null, "root", 2);[/b]

        createDatum("root", "A", 10);
        createDatum("A", "A.1", 100);
        createDatum("A", "A.2", 110);
        createDatum("A", "A.3", 120);
        createDatum("root", "B", 20);
        createDatum("B", "B.1", 200);
        createDatum("B", "B.2", 210);
        createDatum("root", "C", 30);
        createDatum("C", "C.1", 330);
        createDatum("C", "C.2", 370);
        createDatum("C", "C.3", 322);
        createDatum("C", "C.4", 310);
        createDatum("C", "C.5", 315);
        // bar value ise same with root
       [b] createDatum(null, "root2", 2);[/b]

        createDatum("root2", "X", 70);
        createDatum("X", "X.1", 700);
        createDatum("X", "X.2", 710);
        createDatum("X", "X.3", 720);
        createDatum("root2", "Y", 80);
        createDatum("Y", "Y.1", 800);
        createDatum("Y", "Y.2", 810);
        createDatum("root2", "Z", 90);
        createDatum("Z", "Z.1", 900);
        createDatum("Z", "Z.2", 910);
        createDatum("Z", "Z.3", 920);
        createDatum("Z", "Z.4", 930);
        createDatum("Z", "Z.5", 940);
    }