return defaultSettings;
    }

    private List<Tuple<String, Object>> defaultArraySettings() {
        final List<Tuple<String, Object>> tuples = new ArrayList<>();
        tuples.add(new Tuple<>(DefaultKeys.SUPPORTED_FIELDS, "content"));
        return tuples;
    }

    /**
     * Loads the index settings from a resource file.
     * @return The index settings as a string.

 * </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>

        assertEquals(150L, merged.getQueryFreq()); // Sum of frequencies
        assertEquals(75L, merged.getDocFreq()); // Sum of frequencies
        assertEquals(1.5f, merged.getUserBoost(), 0.001f); // Takes item2's boost

        // Check merged arrays contain both items' values
        assertTrue(merged.getTags().length >= 2);
        assertTrue(merged.getRoles().length >= 2);

 *       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 {