Bug 98107 [Viewers] Change visibility of AbstractTreeViewer#internalRemove from private to protected
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractTreeViewer.java
protected Widget internalExpand(Object element, boolean expand) {
        if (element == null)
            return null;
        Widget w = internalGetWidgetToSelect(element);
        if (w == null) {
            if (equals(element, getRoot())) { 
                return null;
            }
            
            ITreeContentProvider cp = (ITreeContentProvider) getContentProvider();
            if (cp == null) {
                return null;
            }
            Object parent = cp.getParent(element);
            if (parent != null) {
                Widget pw = internalExpand(parent, false);
                if (pw != null) {
                    
                    createChildren(pw);
                    
                    if (pw instanceof Item) {
                        Item item = (Item) pw;
                        w = internalFindChild(item, element);
                        if (expand) {
                        	
                        	while (item != null && !getExpanded(item)) {
                        		setExpanded(item, true);
                        		item = getParentItem(item);
                        	}
                        }