return words;
    }

    /**
     * Returns the number of popular words.
     *
     * @return the number of popular words
     */
    public int getNum() {
        return num;
    }

    /**
     * Returns the total number of words.
     *
     * @return the total number of words
     */
    public long getTotal() {
        return total;
    }

      } else {
        return contains(element) ? unfiltered.remove(element, occurrences) : 0;
      }
    }
  }

  /**
   * Returns the expected number of distinct elements given the specified elements. The number of
   * distinct elements is only computed if {@code elements} is an instance of {@code Multiset};
   * otherwise the default value of 11 is returned.
   */

   * into {@code b[off+1]}, and so on. The number of bytes read is, at most, equal to {@code len}.
   *
   * @param in the input stream to read from
   * @param b the buffer into which the data is read
   * @param off an int specifying the offset into the data
   * @param len an int specifying the number of bytes to read
   * @return the number of bytes read
   * @throws IOException if an I/O error occurs

  }

  private static final class TestDatum {
    final String letter;
    final int number;

    TestDatum(String letter, int number) {
      this.letter = letter;
      this.number = number;
    }

    @Override
    public String toString() {
      return letter + number;
    }

    @Override
    public boolean equals(@Nullable Object o) {

	FlagSubroute
)

// This struct cannot be changed and retain backwards compatibility.
// If changed, endpoint version must be bumped.
//
//msgp:tuple message
type message struct {
	MuxID      uint64    // Mux to receive message if any.
	Seq        uint32    // Sequence number.
	DeadlineMS uint32    // If non-zero, milliseconds until deadline (max 1193h2m47.295s, ~49 days)

    protected OpenSearchDataService dataService;

    /**
     * Cache for session queues.
     */
    protected Map<String, QueueHolder> sessionCache = new ConcurrentHashMap<>();

    /**
     * The number of URLs to fetch when polling.
     */
    protected int pollingFetchSize = 1000;

    /**
     * The maximum size of the crawling queue.
     */
    protected int maxCrawlingQueueSize = 100;

    /**

     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse index() {
        return asListHtml();
    }

    /**
     * Show the list page.
     * @param pageNumber The page number.
     * @param form The search form.
     * @return The HTML response.
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })

  K checkKey(K key) {
    return checkNotNull(key);
  }

  @Override
  V checkValue(V value) {
    return checkNotNull(value);
  }

  /**
   * @serialData the key class, value class, number of entries, first key, first value, second key,
   *     second value, and so on.
   */
  @GwtIncompatible // java.io.ObjectOutputStream
  private void writeObject(ObjectOutputStream stream) throws IOException {

 */
public class IndexingHelper {
    /** Logger for this class */
    private static final Logger logger = LogManager.getLogger(IndexingHelper.class);

    /** Maximum number of retry attempts for failed operations */
    protected int maxRetryCount = 5;

    /** Default number of rows to process in a single batch */
    protected int defaultRowSize = 100;

    /**
     * Default constructor for indexing helper.

        receiveCredits.incrementAndGet();
    }

    /**
     * Get number of available send credits
     *
     * @return available send credits
     */
    public int getAvailableSendCredits() {
        return sendCredits.get();
    }

    /**
     * Get number of available receive credits
     *
     * @return available receive credits
     */