Bug 338707 Reconciler chokes on elements under parents that have been removed from the model
bundles/org.eclipse.e4.ui.workbench/src/org/eclipse/e4/ui/internal/workbench/XMLModelReconciler.java
if (rootChild instanceof MTrimmedWindow) {
					if (((MTrimmedWindow) rootChild).getTrimBars().contains(reference)) {
						return rootChild;
					}
				}
			}
			return null;
		}
		if (reference instanceof MUIElement) {
			EMap<EObject, EList<FeatureChange>> objectChanges = changeDescription
					.getObjectChanges();
			for (Entry<EObject, EList<FeatureChange>> entry : objectChanges.entrySet()) {
				EObject key = entry.getKey();
				if (key == reference) {
					for (FeatureChange change : entry.getValue()) {
						if (change.getFeatureName().equals(UIELEMENT_PARENT_ATTNAME)) {
							return (EObject) change.getValue();
						}
					}
					break;
				}
			}
			if (reference instanceof MMenu) {
				boolean appendedMenu = false;
				for (Entry<EObject, EList<FeatureChange>> entry : objectChanges.entrySet()) {
					EObject key = entry.getKey();
					if (key instanceof MPart) {
						for (FeatureChange change : entry.getValue()) {
							if (change.getFeatureName().equals(PART_MENUS_ATTNAME)) {
								List<?> originalMenus = (List<?>) change.getValue();