Bug 184755 [DataBinding] internal tree content provider does not work
I broke the tree content providers while trying to update them to use TreePaths. It would be good to have a working implementation again...
bundles/org.eclipse.jface.databinding/src/org/eclipse/jface/internal/databinding/internal/viewers/OrderedTreeNode.java
private HashSet parents = null;
	
	
	Object parent;
	/**
	 * List of child elements.
	 */
	private IObservableList children;
	private boolean hasPendingNode = false;
	private boolean isStale;
	private boolean listeningToChildren = false;
	private boolean prefetchEnqueued = false;
	/**
	 * @param treePath
	 * @param cp
	 */
	public OrderedTreeNode(TreePath treePath, OrderedTreeContentProvider cp) {
		this.element = treePath;
		this.contentProvider = cp;
		children = contentProvider.createChildList(treePath);
		if (children == null) {
			children = Observables.emptyObservableList(contentProvider.getKnownElements().getRealm());
			listeningToChildren = true;
		}
		hasPendingNode = children.isStale();
	}
	/**
	 * @param parent
	 */