@Override
  public QuickLinkVisibilityController getQuicklinkVisibilityController() {
    SettingEntity entity = settingDAO.findByName(QuickLinksProfile.SETTING_NAME_QUICKLINKS_PROFILE);
    String quickLinkProfileJson = null != entity ? entity.getContent() : null;
    return QuickLinkVisibilityControllerFactory.get(quickLinkProfileJson);
  }
Update a link - switch the link's extension version while keeping the same stack version and extension name

@throws AmbariException if we fail to link the extension to the stack
ambari-server/src/main/java/org/apache/ambari/server/controller/AmbariManagementControllerImpl.java