Bug 127861 [DataBinding] Mark API provisional
examples/org.eclipse.jface.examples.databinding/src/org/eclipse/jface/examples/databinding/contentprovider/test/LabelProviderTest.java
private Shell shell;
	private ListViewer list;
	private Label exploredNodesLabel;
	private WritableSet setOfRenamables;
	private Button addButton;
	private Button removeButton;
	private Button renameButton;
	private SelectionListener buttonSelectionListener = new SelectionAdapter() {
		/* (non-Javadoc)
		 * @see org.eclipse.swt.events.SelectionAdapter#widgetSelected(org.eclipse.swt.events.SelectionEvent)
		 */
		public void widgetSelected(SelectionEvent e) {
			Button pressed = (Button)e.widget;
			if (pressed == addButton) {
				setOfRenamables.add(new RenamableItem());
			} else if (pressed == removeButton) {