Bug 34124 [implementation] Java outline viewer does not use element map
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaOutlinePage.java
public void elementChanged(final ElementChangedEvent e) {
					
					if (getControl() == null)
						return;
						
					Display d= getControl().getDisplay();
					if (d != null) {
						d.asyncExec(new Runnable() {
							public void run() {
								ICompilationUnit cu= (ICompilationUnit) fInput;
								IJavaElement base= cu;
								if (fTopLevelTypeOnly) {
									base= getMainType(cu);
									if (base == null) {
										if (fOutlineViewer != null)
											fOutlineViewer.refresh(true);
										return;
									}
								}
								IJavaElementDelta delta= findElement(base, e.getDelta());
								if (delta != null && fOutlineViewer != null) {
									fOutlineViewer.reconcile(delta);
								}
							}
						});
					}