public class DuplicateHostService extends FessAppService {

    @Resource
    protected DuplicateHostBhv duplicateHostBhv;

    @Resource
    protected FessConfig fessConfig;

    public List<DuplicateHost> getDuplicateHostList(final DuplicateHostPager duplicateHostPager) {

        final PagingResultBean<DuplicateHost> duplicateHostList = duplicateHostBhv.selectPage(cb -> {

        });
    }

    protected void searchPaging(final RenderData data, final SearchForm form) {
        RenderDataUtil.register(data, "duplicateHostItems", duplicateHostService.getDuplicateHostList(duplicateHostPager)); // page navi

        // restore from pager
        copyBeanToBean(duplicateHostPager, form, op -> op.include("regularName", "duplicateHostName"));
    }

        }
        final DuplicateHostService duplicateHostService = ComponentUtil.getComponent(DuplicateHostService.class);
        duplicateHostList.addAll(duplicateHostService.getDuplicateHostList());
    }

    public void setDuplicateHostList(final List<DuplicateHost> duplicateHostList) {
        this.duplicateHostList = duplicateHostList;
    }

    public void add(final DuplicateHost duplicateHost) {

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