*/
public void setRenderer(final int index, final XYItemRenderer renderer,
final boolean notify) {
final XYItemRenderer existing = this.getRenderer(index);
if (existing != null) {
existing.removeChangeListener(this);
}
if (index < this.renderers.size()) {
this.renderers.set(index, renderer);
} else {
this.renderers.add(index, renderer);