* @param form the search form containing current search criteria
     */
    protected void searchPaging(final RenderData data, final SearchForm form) {
        RenderDataUtil.register(data, "relatedContentItems", relatedContentService.getRelatedContentList(relatedContentPager)); // page navi

        // restore from pager
        copyBeanToBean(relatedContentPager, form, op -> op.include("term", "content"));
    }