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/UnorderedTreeNode.java
private UnorderedTreeContentProvider contentProvider;
    private TreePath treePath;
    
    
    private HashSet parents = null;
    
    
    
    Object parent;
    
    /**
     * Set of child elements.
     */
    private IObservableSet children;