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
String value = keyValue.getAttribute(ENTRY_ATTVALUE_VALUE);
				deltaMap.put(key, value);
			}
		}
		return new EMFDeltaMapSet(object, feature, deltaMap);
	}
	private ModelDelta createDelayedDelta(EObject object, EStructuralFeature feature,
			Element element) {
		String referenceId = element.getAttribute(XMIID_ATTNAME);
		return new EMFModelDeltaDelayedSet(object, feature, rootObject, referenceId);
	}
	public static List<?> threeWayMerge(List<?> originalReferences, List<?> userReferences,
			List<?> currentReferences) {
		int userSize = userReferences.size();
		int originalSize = originalReferences.size();
		if (userSize == 0) {
			
			List<Object> collectedReferences = new ArrayList<Object>(currentReferences);
			collectedReferences.removeAll(originalReferences);
			return collectedReferences;
		} else if (originalSize == 0) {
			List<Object> collectedReferences = new ArrayList<Object>(userReferences);
			collectedReferences.addAll(currentReferences);
			return collectedReferences;
		} else if (currentReferences.isEmpty()) {
			
			return userReferences;
		} else if (currentReferences.size() == originalSize
				&& currentReferences.containsAll(originalReferences)) {