}
        } else if (logger.isDebugEnabled()) {
            logger.debug("{} mapping exists.", index);
        }
    }

    /**
     * Extracts a Date object from the source map using the specified field name.
     * Handles various date formats including Date objects, timestamp numbers, and ISO date strings.
     *

import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.xml.sax.InputSource;

/**
 * {@link XpathTransformer} is a class that transforms HTML content into XML format based on XPath expressions.
 * It extracts data from an HTML document by applying XPath rules defined in {@link #fieldRuleMap}.
 * The extracted data is then formatted into an XML structure and stored in the {@link ResultData}.
 * <p>

        }
    }

    /**
     * Runs the crawling process in a separate thread.
     * This method fetches URLs from the queue, accesses content, processes responses,
     * and extracts child URLs until the crawling process is done or no more URLs are available.
     */
    @Override
    public void run() {
        log(logHelper, LogType.START_THREAD, crawlerContext);
        int threadCheckCount = 0;

        private URI uri;

        private String parent;

        private String name;

        /**
         * Constructs a new FtpInfo from a URL string.
         * This constructor parses the URL and extracts the host, port, parent directory,
         * and file name components.
         *
         * @param s The URL string to parse
         * @param c The character encoding (not currently used)