Bug 89137 [JFace] - API Review - "temporary" API in AbstractTreeViewer
AbstractTreeViewer contains two methods documented as "temporary" internalRefresh(Widget, Object) internalAdd(Widget, Object, Object [])
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractTreeViewer.java
return o;
        }
        return null;
    }
    
    protected void internalRefresh(Object element) {
        internalRefresh(element, true);
    }
    
    protected void internalRefresh(Object element, boolean updateLabels) {
        
        if (element == null) {
            internalRefresh(getControl(), getRoot(), true, updateLabels);
            return;
        }
        Widget item = findItem(element);
        if (item != null) {
            
            internalRefresh(item, element, true, updateLabels);
        }
    }
    /**
     * Refreshes the tree starting at the given widget.
     *
     * XXX: temporary API in support of Dirk's explorations
     * into grouping by working sets, which requires viewers
     * to support multiple equal elements.
     * 
     * @param widget
     *           the widget