public void apply(final Vector v) {
        ObservableList<Node> _children = Utilities.this.gameNodes.getChildren();
        Line _line = new Line();
        final Procedure1<Line> _function = new Procedure1<Line>() {
          public void apply(final Line it) {
            Point _a = v.getA();
            double _x = _a.getX();
            it.setStartX(_x);
            Point _b = v.getB();
            double _x_1 = _b.getX();
            it.setEndX(_x_1);
            Point _a_1 = v.getA();
            double _y = _a_1.getY();
            it.setStartY(_y);
            Point _b_1 = v.getB();
            double _y_1 = _b_1.getY();
            it.setEndY(_y_1);
          }
        };
        Line _doubleArrow = ObjectExtensions.<Line>operator_doubleArrow(_line, _function);
        _children.add(_doubleArrow);
      }