/**
* Confirm that cloning works.
*/
public void testCloning() {
PieSectionEntity e1 = new PieSectionEntity(
new Rectangle2D.Double(1.0, 2.0, 3.0, 4.0), new DefaultPieDataset(),
0, 1, "Key", "ToolTip", "URL"
);
StandardEntityCollection c1 = new StandardEntityCollection();
c1.add(e1);