* @param resultData the result data to be processed
     * @return the processed result data after all ingesters have been applied
     */
    private ResultData ingest(final ResponseData responseData, final ResultData resultData) {
        if (ingestFactory == null) {
            return resultData;
        }
        ResultData target = resultData;

     *
     * @param target the result data to process
     * @param responseData the response data from crawling
     * @return the processed result data
     */
    public ResultData process(final ResultData target, final ResponseData responseData) {
        return target;
    }

    /**
     * Processes a document map for web/file crawling with access result.