public TrainCrane(AssetManager assetManager) {
        super("NumberTrainCranes " + numberTrainCranes++ + " ");
        Box boxshape1 = new Box(Vector3f.ZERO, 1f, 4f, 0.5f);
        Box boxshape2 = new Box(Vector3f.ZERO, 1f, 0.5f, 4f);

        Geometry zijkant1 = new Geometry("A Textured Box", boxshape1);
        Geometry bovenkant = new Geometry("A Textured Box", boxshape2);
        Geometry zijkant2 = new Geometry("A Textured Box", boxshape1);

        Material mat_tex = new Material(assetManager, "Common/MatDefs/Misc/Unshaded.j3md");
        mat_tex.setColor("Color", ColorRGBA.Yellow);

        zijkant1.setMaterial(mat_tex);
        zijkant2.setMaterial(mat_tex);
        bovenkant.setMaterial(mat_tex);

        attachChild(zijkant1);
        attachChild(zijkant2);
        attachChild(bovenkant);

        zijkant1.setLocalTranslation(0, 4f, 0);
        zijkant2.setLocalTranslation(0, 4f, 8f);
        bovenkant.setLocalTranslation(0, 8, 4);
    }