public class RelatedQueryService extends FessAppService {

    @Resource
    protected RelatedQueryBhv relatedQueryBhv;

    @Resource
    protected FessConfig fessConfig;

    public List<RelatedQuery> getRelatedQueryList(final RelatedQueryPager relatedQueryPager) {

        final PagingResultBean<RelatedQuery> relatedQueryList = relatedQueryBhv.selectPage(cb -> {

        });
    }

    protected void searchPaging(final RenderData data, final SearchForm form) {
        RenderDataUtil.register(data, "relatedQueryItems", relatedQueryService.getRelatedQueryList(relatedQueryPager)); // page navi

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

        validateApi(body, messages -> {});
        final RelatedQueryPager pager = copyBeanToNewBean(body, RelatedQueryPager.class);
        final List<RelatedQuery> list = relatedQueryService.getRelatedQueryList(pager);
        return asJson(
                new ApiResult.ApiConfigsResponse<EditBody>().settings(list.stream().map(this::createEditBody).collect(Collectors.toList()))