public K firstKey() {
    Entry<K, V> entry = firstEntry();
    if (entry == null) {
      throw new NoSuchElementException();
    } else {
      return entry.getKey();
    }
  }

  @Override
  @ParametricNullness
  public K lastKey() {
    Entry<K, V> entry = lastEntry();
    if (entry == null) {
      throw new NoSuchElementException();
    } else {
      return entry.getKey();
    }
  }

                throw new JobProcessingException(out.toString());
            }
            ComponentUtil.getPopularWordHelper().clearCache();
        } catch (final JobProcessingException e) {
            throw e;
        } catch (final Exception e) {
            throw new JobProcessingException("ThumbnailGenerator Process terminated.", e);
        } finally {

                throw new JobProcessingException(out.toString());
            }
            ComponentUtil.getPopularWordHelper().clearCache();
        } catch (final JobProcessingException e) {
            throw e;
        } catch (final Exception e) {
            throw new JobProcessingException("SuggestCreator Process terminated.", e);
        } finally {

  Table<String, Integer, Character> makeTable() {
    return ArrayTable.create(asList("foo", "bar", "dog"), asList(1, 2, 3));
  }

  @Override
  protected Map<String, Map<Integer, Character>> makeEmptyMap() {
    throw new UnsupportedOperationException();
  }

      this.windowSizeIncrement = windowSizeIncrement
    }

    override fun priority(
      streamId: Int,
      streamDependency: Int,
      weight: Int,
      exclusive: Boolean,
    ) {
      throw UnsupportedOperationException()
    }

    override fun pushPromise(
      streamId: Int,
      associatedStreamId: Int,
      headerBlock: List<Header>,
    ) {
      this.type = Http2.TYPE_PUSH_PROMISE

          connection: Connection,
        ) {
          socket = connection.socket() as SSLSocket
        }

        override fun requestHeadersStart(call: Call) {
          if (closed) {
            throw IOException("fake socket failure")
          }
        }
      }
    val localClient = client.newBuilder().eventListener(eventListener).build()

    val call1 = localClient.newCall(Request(server.url("/")))

   *     down the executor after the last event has been posted to this event bus.
   * @param subscriberExceptionHandler Handler used to handle exceptions thrown from subscribers.
   *     See {@link SubscriberExceptionHandler} for more information.
   * @since 16.0
   */
  public AsyncEventBus(Executor executor, SubscriberExceptionHandler subscriberExceptionHandler) {

    @Override
    protected Extractor getExtractor(final ResponseData responseData) {
        final ExtractorFactory extractorFactory = ComponentUtil.getExtractorFactory();
        if (extractorFactory == null) {
            throw new FessSystemException("Could not find extractorFactory.");
        }
        final Extractor extractor = extractorFactory.getExtractor(responseData.getMimeType());
        if (logger.isDebugEnabled()) {

        final GroovyShell groovyShell = new GroovyShell(new Binding(bindingMap));
        try {
            return groovyShell.evaluate(template);
        } catch (final JobProcessingException e) {
            throw e;
        } catch (final Exception e) {
            logger.warn("Failed to evaluate groovy script: {} => {}", template, paramMap, e);
            return null;
        } finally {

                        .orElse(() -> {
                            if (isApiRequest && ComponentUtil.getFessConfig().getApiAccessTokenRequiredAsBoolean()) {
                                throw new InvalidAccessTokenException("invalid_token", "Access token is requried.");
                            }
                            if (!hasAccessToken || roleSet.isEmpty()) {