protected void searchPaging(final RenderData data, final SearchForm form) {
        RenderDataUtil.register(data, "crawlingInfoItems", crawlingInfoService.getCrawlingInfoList(crawlingInfoPager)); // page navi

        // restore from pager
        copyBeanToBean(crawlingInfoPager, form, op -> op.include("sessionId"));
    }

    // ===================================================================================

    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"));
    }

    // ===================================================================================

    boolean addedPredecessor;

    if (previousValue == null) {
      addedPredecessor = true;
    } else if (previousValue instanceof PredAndSucc) {
      // Restore previous PredAndSucc object.
      adjacentNodeValues.put(node, previousValue);
      addedPredecessor = false;
    } else if (previousValue != PRED) { // successor

        RenderDataUtil.register(data, "relatedContentItems", relatedContentService.getRelatedContentList(relatedContentPager)); // page navi

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

    // ===================================================================================

        RenderDataUtil.register(data, "boostDocumentRuleItems", boostDocumentRuleService.getBoostDocumentRuleList(boostDocPager)); // page navi

        // restore from pager
        copyBeanToBean(boostDocPager, form, op -> op.include("urlExpr", "boostExpr"));
    }

    // ===================================================================================

        RenderDataUtil.register(data, "displayCreateLink", !crawlingConfigHelper.getAllWebConfigList(false, false, false, null).isEmpty());
        // restore from pager
        copyBeanToBean(webAuthPager, form, op -> op.include("id"));
    }

    // ===================================================================================

            try {
                insert(urlQueue);
            } catch (final Exception e) {
                logger.warn("Failed to restore " + urlQueue, e);
            }
        }));
    }

    public void clearCache() {
        sessionCache.clear();
    }

    @Override

        // page navi
        RenderDataUtil.register(data, "protwordsItemItems", protwordsService.getProtwordsList(form.dictId, protwordsPager));

        // restore from pager
        BeanUtil.copyBeanToBean(protwordsPager, form, op -> {
            op.exclude(Constants.PAGER_CONVERSION_RULE);
        });
    }

    protected void searchPaging(final RenderData data, final SearchForm form) {
        RenderDataUtil.register(data, "fileConfigItems", fileConfigService.getFileConfigList(fileConfigPager)); // page navi

        // restore from pager
        copyBeanToBean(fileConfigPager, form, op -> op.include("name", "paths", "description"));
    }

    // ===================================================================================

    }

    protected void searchPaging(final RenderData data, final SearchForm form) {
        RenderDataUtil.register(data, "webConfigItems", webConfigService.getWebConfigList(webConfigPager)); // page navi

        // restore from webConfigPager
        copyBeanToBean(webConfigPager, form, op -> op.include("id", "name", "urls", "description"));
    }

    // ===================================================================================