elementProcessor.retrieveElements(project, "TraceLink", list);
assertEquals(1, list.size());
assertSame(link, list.get(0));
list.clear();
Actor actor = URNModelFactory.eINSTANCE.createActor();
accessLayer.addElement(project, actor);
assertEquals(0, list.size());
elementProcessor.retrieveElements(project, "TraceLink|Actor", list);
assertEquals(2, list.size());