///

## Recap { #recap }

 * </pre>
 */
public class XmlTransformer extends AbstractTransformer {
    private static final Logger logger = LogManager.getLogger(XmlTransformer.class);

    private static final Pattern SPACE_PATTERN = Pattern.compile("\\s+", Pattern.MULTILINE);

    /**
     * If true, the parser will be namespace aware.
     */
    protected boolean namespaceAware;

    /**

    private static final String CRAWLER_PARAM_PREFIX = "crawler.param.";

    private static final Object CRAWLER_FILE_AUTH = "crawler.file.auth";

    protected Pattern[] includedDocPathPatterns;

    protected Pattern[] excludedDocPathPatterns;

    protected Map<String, String> handlerParameterMap;

    protected Map<String, String> handlerScriptMap;

            data.register(key, BeanUtil.copyBeanToNewMap(value));
        } else {
            if (value instanceof final Collection<?> coll && !coll.isEmpty()) {
                // care performance for List that the most frequent pattern
                final Object first = coll instanceof List<?> ? ((List<?>) coll).get(0) : coll.iterator().next();
                if (first instanceof Entity) {

```

The response would be like:

```JSON
{
    "X-Token values": [
        "bar",
        "foo"
    ]
}
```

## Recap { #recap }

Declare headers with `Header`, using the same common pattern as `Query`, `Path` and `Cookie`.

    if (entry != null && entry.key == key) {
      return entry.value;
    }
    entry = cacheEntry2;
    if (entry != null && entry.key == key) {
      // Promote second cache entry to first so the access pattern
      // [K1, K2, K1, K3, K1, K4...] still hits the cache half the time.
      addToCache(entry);
      return entry.value;
    }
    return null;
  }

  @Override
  void clearCache() {

 * Subclasses should override one or more methods to modify the behavior of the backing deque as
 * desired per the <a href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *
 * <p><b>Warning:</b> The methods of {@code ForwardingBlockingDeque} forward <b>indiscriminately</b>
 * to the methods of the delegate. For example, overriding {@link #add} alone <b>will not</b> change

 * represents a valid sitemap. It uses a SitemapsHelper to validate the response body as an InputStream.
 * The rule checks if the URL matches the defined regex pattern and then validates the content as a sitemap.
 * If any exception occurs during the sitemap validation, it logs the error and returns false.
 *
 */
public class SitemapsRule extends RegexRule {
    /**

#          allow-empty-results: true
      # Upload additional logs
      - google-cloud-storage:
          credentials-id: 'elasticsearch-ci-gcs-plugin'
          uploads:
            - classic:
                file-pattern: 'build/*.tar.bz2'
                storage-location: 'gs://elasticsearch-ci-artifacts/jobs/$JOB_NAME'
                share-publicly: false
                upload-for-failed-jobs: true
                show-inline: true

 * override one or more methods to modify the behavior of the backing multimap as desired per the <a
 * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *
 * <p><b>{@code default} method warning:</b> This class does <i>not</i> forward calls to {@code
 * default} methods. Instead, it inherits their default implementations. When those implementations