### Otras funciones de utilidades

   *
   * @throws UnsupportedOperationException always
   * @deprecated Unsupported operation.
   */
  @Deprecated
  @Override
  @DoNotCall("Always throws UnsupportedOperationException")
  public final void clear() {
    throw new UnsupportedOperationException();
  }

  @Override
  public boolean isEmpty() {
    return size() == 0;
  }

  @Override
  public boolean containsKey(@CheckForNull Object key) {

	for i, b := range pd.QueuedBuckets {
		if b == bucket {
			// Bucket is done.
			pd.QueuedBuckets = append(pd.QueuedBuckets[:i], pd.QueuedBuckets[i+1:]...)
			// Clear tracker info.
			if pd.Bucket == bucket {
				pd.Bucket = "" // empty this out for next bucket
				pd.Prefix = "" // empty this out for the next bucket
				pd.Object = "" // empty this out for next object
			}

  abstract static class IteratorBasedImmutableMap<K, V> extends ImmutableMap<K, V> {
    abstract UnmodifiableIterator<Entry<K, V>> entryIterator();

    @Override
    ImmutableSet<K> createKeySet() {
      return new ImmutableMapKeySet<>(this);
    }

    @Override
    ImmutableSet<Entry<K, V>> createEntrySet() {
      class EntrySetImpl extends ImmutableMapEntrySet<K, V> {

    peer.sendFrame().ping(false, 2, 0)
    peer.acceptFrame()
    peer.play()

    // Play it back.
    val connection = connect(peer)

    // fake a settings frame with clear flag set.
    val settings2 = Settings()
    settings2[Settings.MAX_CONCURRENT_STREAMS] = 60000
    connection.readerRunnable.applyAndAckSettings(true, settings2)
    connection.withLock {

 * @author Nishant Thakkar
 * @author Sven Mawson
 * @since 1.0
 */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault
public final class Futures extends GwtFuturesCatchingSpecialization {

  // A note on memory visibility.
  // Many of the utilities in this class (transform, withFallback, withTimeout, asList, combine)
  // have two requirements that significantly complicate their design.

    return getInet4Address(Arrays.copyOfRange(ip.getAddress(), 2, 6));
  }

  /**
   * A simple immutable data class to encapsulate the information to be found in a Teredo address.
   *
   * <p>All of the fields in this class are encoded in various portions of the IPv6 address as part
   * of the protocol. More protocols details can be found at: <a target="_parent"

 * also cause future calls to the client to be rejected.
 *
 * ```java
 * client.dispatcher().executorService().shutdown();
 * ```
 *
 * Clear the connection pool with [evictAll()][ConnectionPool.evictAll]. Note that the connection
 * pool's daemon thread may not exit immediately.
 *
 * ```java
 * client.connectionPool().evictAll();
 * ```
 *

import com.google.common.io.BaseEncoding;

import jakarta.annotation.PostConstruct;
import jakarta.annotation.PreDestroy;

public class SearchEngineClient implements Client {

    private static final Logger logger = LogManager.getLogger(SearchEngineClient.class);

    private static final String DOC_INDEX = "fess";

    private static final String LOG_INDEX_PREFIX = "fess_log";

    /** The key of the message: Results <b>{2}</b><span class="hidden-phone"> -</span> <b>{3}</b> of <b>{1}</b> for <b>{0}</b> */
    public static final String LABELS_search_result_status = "{labels.search_result_status}";