* @param textBuilder the string builder for text content
     * @param metadataMap the map for metadata extraction
     * @param depth the current depth
     */
    protected void extractObject(final ObjectNode node, final String parentKey, final StringBuilder textBuilder,
            final Map<String, List<String>> metadataMap, final int depth) {
        final Iterator<Map.Entry<String, JsonNode>> fields = node.fields();

    /**
     * Map of additional search fields with their values.
     */
    public Map<String, String[]> fields = new HashMap<>();

    /**
     * Map of advanced search conditions.
     */
    public Map<String, String[]> as = new HashMap<>();

    /**
     * The main search query string.
     */
    @Size(max = 1000)
    public String q;

    /**
     * The sort parameter for search results.
     */

@SuppressWarnings("unused") // For use by NullPointerTester
public class SomeClassThatDoesNotUseNullable {

  void packagePrivateButDoesNotCheckNull(String s) {}

  protected void protectedButDoesNotCheckNull(String s) {}

  public void publicButDoesNotCheckNull(String s) {}

  public static void staticButDoesNotCheckNull(String s) {}

    //                                                                           =========
    /** urlId */
    protected String urlId;

    /** docId */
    protected String docId;

    /** order */
    protected Integer order;

    /** queryId */
    protected String queryId;

    /** queryRequestedAt */
    protected LocalDateTime queryRequestedAt;

    /** requestedAt */

     * @param id       the ID of the suggestion to delete
     * @return a result object containing the outcome of the delete operation
     */
    SuggestWriterResult delete(Client client, SuggestSettings settings, String index, String id);

    /**
     * Deletes documents from the specified index based on the given query.
     *
     * @param client the OpenSearch client to use for the operation

    }

    @Override
    public String getRequestProperty(final String key) {
        return this.connection.getRequestProperty(key);
    }

    @Override
    public Map<String, List<String>> getRequestProperties() {
        final Map<String, List<String>> map = new HashMap<>();
        for (final Entry<String, List<String>> entry : this.requestProperties.entrySet()) {

                final Boolean b = (Boolean) xObj.value();
                return new String[] { b.toString() };
            case NUMBER:
                final Number d = (Number) xObj.value();
                return new String[] { d.toString() };
            case STRING:
                final String str = (String) xObj.value();
                return new String[] { str.trim() };
            case NODESET:

  }

  @SuppressWarnings("unchecked") // proxy of List<String>
  private static List<String> newDelegatingList(List<String> delegate) {
    return Reflection.newProxy(List.class, new DelegatingInvocationHandler(delegate));
  }

  @SuppressWarnings("unchecked") // proxy of List<String>
  private static List<String> newDelegatingListWithEquals(List<String> delegate) {

     * @param doc The document to update.
     */
    public void updateDocument(final Map<String, Object> doc) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        String language = getSupportedLanguage(DocumentUtil.getValue(doc, fessConfig.getIndexFieldLang(), String.class));
        if (language == null) {
            for (final String f : langFields) {
                if (doc.containsKey(f)) {

 */
public class PingResponse {
    private static final String CLUSTER_NAME = "cluster_name";
    private static final String STATUS = "status";
    private static final String TIMED_OUT = "timed_out";
    private static final String NUMBER_OF_NODES = "number_of_nodes";
    private static final String NUMBER_OF_DATA_NODES = "number_of_data_nodes";
    private static final String NUMBER_OF_PENDING_TASKS = "number_of_pending_tasks";