* @return this CurlRequest instance
     */
    public CurlRequest compression(final String compression) {
        this.compression = compression;
        return this;
    }

    /**
     * Sets the SSL socket factory for secure connections.
     *
     * @param sslSocketFactory the SSL socket factory
     * @return this CurlRequest instance
     */

            return null;
        }
    }

    private CurlRequest callProtectedRequest(CurlHelper curlHelper, CurlRequest request) {
        try {
            java.lang.reflect.Method method = CurlHelper.class.getDeclaredMethod("request", CurlRequest.class);
            method.setAccessible(true);
            return (CurlRequest) method.invoke(curlHelper, request);
        } catch (Exception e) {

        final Method httpMethod = Method.valueOf(request.getMethod().toUpperCase(Locale.ROOT));
        final CurlRequest curlRequest = ComponentUtil.getCurlHelper().request(httpMethod, path);

        final String contentType = request.getHeader("Content-Type");
        if (StringUtil.isNotEmpty(contentType)) {
            curlRequest.header("Content-Type", contentType);
        }

     *
     * @param url the URL to create a request for
     * @return a configured CURL request
     */
    protected CurlRequest createCurlRequest(final String url) {
        final CurlRequest request = Curl.get(url);
        final Proxy proxy = ComponentUtil.getFessConfig().getHttpProxy();
        if (proxy != null && !Proxy.NO_PROXY.equals(proxy)) {