public void setLayer(int index, MapLayer l) { l.setMap(this); super.setLayer(index, l);
public void setLayer(int index, MapLayer layer) { layer.setMap(this); super.setLayer(index, layer);
    public void setLayer(int index, MapLayer l) {        l.setMap(this);        super.setLayer(index, l);        fireMapChanged();    }