assertNotNull("Could not create navigation!", pageNav);
PageNode pageNode = new PageNode();
pageNode.setName(formerName);
pageNode.setUri(formerName + "_uri");
pageNode.setLabel(formerName + "_label");
pageNav.addNode(pageNode);
storage_.save(pageNav);
pageNav = storage_.getPageNavigation(ownerType, ownerId);
pageNode = pageNav.getNode(formerName);