if (!elementName.equals("a") || !attributes.containsKey("name")) {
                return false;
            }
            Element element = document.createElement("anchor");
            String id = String.format("%s.%s", classMetaData.getClassName(), attributes.get("name"));
            element.setAttribute("id", id);
            nodes.appendChild(element);
            return true;

        // created
        final Date now = systemHelper.getCurrentTime();
        putResultDataBody(dataMap, fessConfig.getIndexFieldCreated(), now);
        // anchor
        putResultDataBody(dataMap, fessConfig.getIndexFieldAnchor(), getAnchorList(document, responseData));
        // mimetype
        putResultDataBody(dataMap, fessConfig.getIndexFieldMimetype(), mimeType);

        if (anchorList.isEmpty()) {
            return null;
        }

        final Set<RequestData> childUrlSet = new LinkedHashSet<>();
        for (final String anchor : anchorList) {
            childUrlSet.add(RequestDataBuilder.newRequestData().get().url(anchor).build());
        }
        return childUrlSet;
    }

    protected Set<RequestData> getChildUrlSet(final SearchEngineClient searchEngineClient, final String id) {

        // created
        final Date now = systemHelper.getCurrentTime();
        putResultDataBody(dataMap, fessConfig.getIndexFieldCreated(), now);
        // TODO anchor
        putResultDataBody(dataMap, fessConfig.getIndexFieldAnchor(), StringUtil.EMPTY);
        // mimetype
        putResultDataBody(dataMap, fessConfig.getIndexFieldMimetype(), mimeType);