return HtmlResponse.fromRedirectPathAsIs(targetUrl + hash);
        }
        final ViewHelper viewHelper = ComponentUtil.getViewHelper();
        try {
            final StreamResponse response = viewHelper.asContentResponse(doc);
            if (response.getHttpStatus().orElse(200) == 404) {
                logger.debug("Document not found: url={}", targetUrl);

     *
     * @param doc the document data map
     * @return the stream response containing document content
     * @throws FessSystemException if content cannot be retrieved
     */
    public StreamResponse asContentResponse(final Map<String, Object> doc) {
        if (logger.isDebugEnabled()) {
            logger.debug("writing the content of: {}", doc);
        }
        final FessConfig fessConfig = ComponentUtil.getFessConfig();