class Halo extends AbstractSymbolizerNode implements  UomNode, FillNode {

    @Override
    public List<SymbolizerNode> getChildren() {
            List<SymbolizerNode> ls = new ArrayList<SymbolizerNode>();
            ls.add(radius);
            ls.add(fill);
            return ls;
    }

    public  Halo();
    public  Halo(Fill fill, RealParameter radius);
    public  Halo(HaloType halo);

}