Bug 147530 [DataBinding] Provide event objects for change listeners
Before data binding goes 1.0 it would be wise to provide EventObjects for the following listeners to ensure that the API doesn't preclude future expansion of the values supplied to listeners. Interfaces that would be affected: * IValueChangeListener * IValueChangingListener * IListChangeListener * ISetChangeListener * IMappingChangeListener
bundles/org.eclipse.core.databinding/src/org/eclipse/core/databinding/observable/tree/AbstractObservableTree.java
implements IObservableTree {
	private boolean stale;
	private ListenerList treeListeners = new ListenerList(ListenerList.IDENTITY);
	/**
	 * @param realm
	 */
	public AbstractObservableTree(Realm realm) {
		super(realm);
	}
	public void addChild(TreePath parentPath, Object childElement) {
		throw new UnsupportedOperationException();