events.add(createEventState(n1, Event.NODE_ADDED, "{}n1", session));
events.add(createEventState(p1, n1, Event.PROPERTY_ADDED, session));
events.add(createEventState(p2, n2, Event.PROPERTY_REMOVED, session));
events.add(createEventState(n3, Event.NODE_REMOVED, "{}n3", session));
return new UpdateEvent(changes, events, System.currentTimeMillis(), "user-data");
}