Bug 34124 [implementation] Java outline viewer does not use element map
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaOutlinePage.java
* Indicates an item which has been reused. At the point of
				 * its reuse it has been expanded. This field is used to
				 * communicate between <code>internalExpandToLevel</code> and
				 * <code>reuseTreeItem</code>.
				 */
				private Item fReusedExpandedItem;
				private boolean fReorderedMembers;
				
				public JavaOutlineViewer(Tree tree) {
					super(tree);
					setAutoExpandLevel(ALL_LEVELS);
				}
				
				/**
				 * Investigates the given element change event and if affected incrementally
				 * updates the outline.
				 */
				public void reconcile(IJavaElementDelta delta) {
					fReorderedMembers= false;
					if (getSorter() == null) {
						if (fTopLevelTypeOnly
							&& delta.getElement() instanceof IType
							&& (delta.getKind() & IJavaElementDelta.ADDED) != 0)
						{
							refresh(true);
						} else {
							Widget w= findItem(fInput);
							if (w != null && !w.isDisposed())
								update(w, delta);
							if (fReorderedMembers) {