* </p>
 *
 * <p>
 * The class uses a cache for XPathAPI objects to improve performance. The cache duration is configurable.
 * </p>
 *
 * <p>
 * The transform method takes a ResponseData object containing the XML content and returns a ResultData object with the extracted and formatted data.
 * </p>
 *
 * <p>

 *       invalid URLs.</li>
 * </ul>
 *
 * <p>
 * <b>Usage:</b>
 * </p>
 * <p>
 * The {@code transform} method is the main entry point for transforming an HTML
 * response. It takes a {@link ResponseData} object as input and returns a
 * {@link ResultData} object containing the extracted data and child URLs.
 * </p>
 */
public class HtmlTransformer extends AbstractTransformer {