Bug 172814 [Viewers] Rename AbstractViewerEditor to ColumnViewerEditor
There is no "AbstractViewer", and this class is referenced from ColumnViewer. To make the names more consistent, it should be called ColumnViewerEditor, not AbstractViewerEditor.
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractTreeViewer.java
* @param elementOrPath
	 *            the element
	 * @param expand
	 *            <code>true</code> if all nodes on the path should be
	 *            expanded, and <code>false</code> otherwise
	 * @return Widget
	 */
	protected Widget internalExpand(Object elementOrPath, boolean expand) {
		if (elementOrPath == null) {
			return null;
		}
		Widget w = internalGetWidgetToSelect(elementOrPath);
		if (w == null) {
			if (equals(elementOrPath, getRoot())) { 
				return null;
			}
			
			Object parent = getParentElement(elementOrPath);
			if (parent != null) {
				Widget pw = internalExpand(parent, false);
				if (pw != null) {
					
					createChildren(pw);
					Object element = internalToElement(elementOrPath);
					w = internalFindChild(pw, element);
					if (expand && pw instanceof Item) {
						
						Item item = (Item) pw;
						LinkedList toExpandList = new LinkedList();
						while (item != null && !getExpanded(item)) {