* SortedMultiset#contains}, {@link SortedMultiset#containsAll}, {@link SortedMultiset#count},
   * {@link SortedMultiset#firstEntry} {@link SortedMultiset#headMultiset}, {@link
   * SortedMultiset#isEmpty}, {@link SortedMultiset#lastEntry}, {@link SortedMultiset#subMultiset},
   * {@link SortedMultiset#tailMultiset}, the {@code size()} and {@code iterator()} methods of

		} else {
			policy, perr := policy.ParseConfig(bytes.NewReader(item.Policy))
			if perr != nil {
				writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, perr), r.URL)
				return
			}
			if policy.IsEmpty() {
				err = globalSiteReplicationSys.PeerAddPolicyHandler(ctx, item.Name, nil, item.UpdatedAt)
			} else {
				err = globalSiteReplicationSys.PeerAddPolicyHandler(ctx, item.Name, policy, item.UpdatedAt)
			}
		}

	return buf
}

// IsFull returns this ringbuffer is full.
func (r *RingBuffer) IsFull() bool {
	r.mu.Lock()
	defer r.mu.Unlock()

	return r.isFull
}

// IsEmpty returns this ringbuffer is empty.
func (r *RingBuffer) IsEmpty() bool {
	r.mu.Lock()
	defer r.mu.Unlock()

	return !r.isFull && r.w == r.r
}

// CloseWithError closes the writer; reads will return

				l.Status = st
			default:
				return xml.UnmarshalError(fmt.Sprintf("expected element type <Status> but have <%s>", se.Name.Local))
			}
		}
	}
	return nil
}

// IsEmpty returns true if struct is empty
func (l *ObjectLegalHold) IsEmpty() bool {
	return !l.Status.Valid()
}

// ParseObjectLegalHold decodes the XML into ObjectLegalHold
func ParseObjectLegalHold(reader io.Reader) (hold *ObjectLegalHold, err error) {

     */
    public void addExtractor(final List<String> keyList, final Extractor extractor) {
        if (keyList == null || keyList.isEmpty()) {
            throw new CrawlerSystemException("The key list is empty.");
        }
        keyList.stream().distinct().forEach(key -> addExtractor(key, extractor));
    }

    /**

	QueueDir   string `json:"queueDir"`
	QueueLimit uint64 `json:"queueLimit"`
}

// Validate NSQArgs fields
func (n NSQArgs) Validate() error {
	if !n.Enable {
		return nil
	}

	if n.NSQDAddress.IsEmpty() {
		return errors.New("empty nsqdAddress")
	}

	if n.Topic == "" {
		return errors.New("empty topic")
	}
	if n.QueueDir != "" {
		if !filepath.IsAbs(n.QueueDir) {

        json.append("\"severity\":\"").append(entry.severity.name()).append("\",");
        json.append("\"message\":\"").append(escapeJson(entry.message)).append("\"");

        if (!entry.context.isEmpty()) {
            json.append(",\"context\":{");
            boolean first = true;
            for (Map.Entry<String, Object> e : entry.context.entrySet()) {
                if (e.getValue() != null) {

        if (session != null) {
            request.setRepositorySession(session.getRepositorySession());
            request.setSystemProperties(session.getSystemProperties());
            if (request.getUserProperties().isEmpty()) {
                request.setUserProperties(session.getUserProperties());
            }

            MavenExecutionRequest req = session.getRequest();
            if (req != null) {

      nextIndex++;
      current = null;
    }
  }

  // Query Operations

  @Override
  public int size() {
    return size;
  }

  @Override
  public boolean isEmpty() {
    return head == null;
  }

  @Override
  public boolean containsKey(@Nullable Object key) {
    return keyToKeyList.containsKey(key);
  }

  @Override

            // Extract object name from path, removing leading slash if present and decoding URL encoding
            final String path = url.getPath();
            if (path != null && !path.isEmpty()) {
                final String pathWithoutLeadingSlash = path.startsWith("/") ? path.substring(1) : path;
                // Decode URL-encoded characters (e.g., %20 -> space)