@Override
    public boolean hasNext() {
      return !nextElements.isEmpty();
    }

    @Override
    public boolean hasPrevious() {
      return !previousElements.isEmpty();
    }

    @Override
    public E next() {
      return transferElement(nextElements, previousElements);
    }

    @Override
    public int nextIndex() {
      return previousElements.size();
    }

    @Override

  }

  private fun WebSocketExtensions.isValid(): Boolean {
    // If the server returned parameters we don't understand, fail the web socket.
    if (unknownValues) return false

    // If the server returned a value for client_max_window_bits, fail the web socket.
    if (clientMaxWindowBits != null) return false

    // If the server returned an illegal server_max_window_bits, fail the web socket.

        case CrudMode.CREATE:
            return OptionalEntity.of(new BadWord()).map(entity -> {
                entity.setCreatedBy(username);
                entity.setCreatedTime(currentTime);
                return entity;
            });
        case CrudMode.EDIT:
            if (form instanceof EditForm) {
                return ComponentUtil.getComponent(BadWordService.class).getBadWord(((EditForm) form).id);

    return new UnmodifiableIterator<K>() {
      @Override
      public boolean hasNext() {
        return entryIterator.hasNext();
      }

      @Override
      public K next() {
        return entryIterator.next().getKey();
      }
    };
  }

  Spliterator<K> keySpliterator() {

     * ```
     */
    @JvmStatic
    @ExperimentalOkHttpApi
    fun RequestBody.gzip(): RequestBody {
      return object : RequestBody() {
        override fun contentType(): MediaType? {
          return ******@****.***tType()
        }

        override fun contentLength(): Long {
          return -1 // We don't know the compressed length in advance!
        }

        @Throws(IOException::class)

                    requestBuilder.setFetchSource(fields, null);
                }
                return true;
            }, entity -> {
                entityList.add(entity);
                return entityList.size() <= (exceeded ? maxSearchDocSize : numFound);
            });
            return entityList;
        }
        return searchEngineClient.getDocumentList(fessConfig.getIndexDocumentUpdateIndex(), requestBuilder -> {

		return err
	}
	defer gw.Close()

	var wc io.WriteCloser
	wc = gzip.NewWriter(gw)
	if _, err = io.Copy(wc, r); err != nil {
		return err
	}

	if err = wc.Close(); err != nil {
		return err
	}

	// Persist to disk any caches.
	if err = gw.Sync(); err != nil {
		return err
	}

	// close everything before we delete.
	if err = gw.Close(); err != nil {
		return err
	}

  }

  @Override
  public Multimap<K, V> unfiltered() {
    return unfiltered;
  }

  @Override
  public Predicate<? super Entry<K, V>> entryPredicate() {
    return predicate;
  }

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

  private boolean satisfies(@ParametricNullness K key, @ParametricNullness V value) {
    return predicate.apply(immutableEntry(key, value));
  }

        public String getName() {
            return name;
        }
        public int getType() {
            return (type & 0x80000000) != 0 ? SmbFile.TYPE_WORKGROUP : SmbFile.TYPE_SERVER;
        }
        public int getAttributes() {
            return SmbFile.ATTR_READONLY | SmbFile.ATTR_DIRECTORY;
        }
        public long createTime() {
            return 0L;
        }
        public long lastModified() {

	defer cancel()

	for {
		select {
		case <-retryCtx.Done():
			// Caller context canceled or we timedout,
			// return false anyways for both situations.
			return false
		default:
			if lm.lock(id, source, isWriteLock) {
				return true
			}
			time.Sleep(time.Duration(r.Float64() * float64(lockRetryInterval)))
		}
	}
}

// Unlock unlocks the write lock.
//