Bug 338707 Reconciler chokes on elements under parents that have been removed from the model
tests/org.eclipse.e4.ui.tests/src/org/eclipse/e4/ui/tests/reconciler/ModelReconcilerScenarioTest.java
* </ol>
	 */
	private void testPartStack_AdditionInFront_ApplicationHasNewStackInBack(
			boolean performMoveFirst) {
		MApplication application = createApplication();
		MWindow window = createWindow(application);
		MPartStack stack1 = BasicFactoryImpl.eINSTANCE.createPartStack();
		window.getChildren().add(stack1);
		
		MPart partA = BasicFactoryImpl.eINSTANCE.createPart();
		MPart partB = BasicFactoryImpl.eINSTANCE.createPart();
		MPart partC = BasicFactoryImpl.eINSTANCE.createPart();
		stack1.getChildren().add(partA);
		stack1.getChildren().add(partB);
		stack1.getChildren().add(partC);
		saveModel();
		ModelReconciler reconciler = createModelReconciler();
		reconciler.recordChanges(application);
		MPartStack stack2 = BasicFactoryImpl.eINSTANCE.createPartStack();
		
		window.getChildren().add(0, stack2);
		
		stack2.getChildren().add(partA);
		Object state = reconciler.serialize();
		application = createApplication();
		window = application.getChildren().get(0);
		stack1 = (MPartStack) window.getChildren().get(0);
		partA = (MPart) stack1.getChildren().get(0);
		partB = (MPart) stack1.getChildren().get(1);
		partC = (MPart) stack1.getChildren().get(2);