}

    @Override
    Set<E> createElementSet() {
      return Sets.filter(unfiltered.elementSet(), predicate);
    }

    @Override
    Iterator<E> elementIterator() {
      throw new AssertionError("should never be called");
    }

    @Override
    Set<Entry<E>> createEntrySet() {
      return Sets.filter(unfiltered.entrySet(), entry -> predicate.apply(entry.getElement()));
    }

    }

    @Override
    Set<E> createElementSet() {
      return Sets.filter(unfiltered.elementSet(), predicate);
    }

    @Override
    Iterator<E> elementIterator() {
      throw new AssertionError("should never be called");
    }

    @Override
    Set<Entry<E>> createEntrySet() {
      return Sets.filter(unfiltered.entrySet(), entry -> predicate.apply(entry.getElement()));
    }

    return (Optional<T>) INSTANCE;
  }

  private Absent() {}

  @Override
  public boolean isPresent() {
    return false;
  }

  @Override
  public T get() {
    throw new IllegalStateException("Optional.get() cannot be called on an absent value");
  }

  @Override
  public T or(T defaultValue) {
    return checkNotNull(defaultValue, "use Optional.orNull() instead of Optional.or(null)");
  }

      ServiceManagerState state = this.state.get();
      if (state != null) {
        state.transitionService(service, NEW, STARTING);
        if (!(service instanceof NoOpService)) {
          logger.get().log(Level.FINE, "Starting {0}.", service);
        }
      }
    }

    @Override
    public void running() {
      ServiceManagerState state = this.state.get();
      if (state != null) {

      ServiceManagerState state = this.state.get();
      if (state != null) {
        state.transitionService(service, NEW, STARTING);
        if (!(service instanceof NoOpService)) {
          logger.get().log(Level.FINE, "Starting {0}.", service);
        }
      }
    }

    @Override
    public void running() {
      ServiceManagerState state = this.state.get();
      if (state != null) {

              .replace("$OTHER", itemReporter.reportItem(other)));
    }
  }

  private Item<T> getItem(int groupNumber, int itemNumber) {
    return new Item<>(groups.get(groupNumber).get(itemNumber), groupNumber, itemNumber);
  }

  static final class Item<T> {
    final T value;
    final int groupNumber;
    final int itemNumber;

    assertContentsAnyOrder(multimap().asMap().get(null), getValueForNullKey());
  }

  @MapFeature.Require(ALLOWS_NULL_KEY_QUERIES)
  public void testAsMapGetNullKeyAbsent() {
    assertNull(multimap().asMap().get(null));
  }

  @MapFeature.Require(absent = ALLOWS_NULL_KEY_QUERIES)
  public void testAsMapGetNullKeyUnsupported() {
    assertThrows(NullPointerException.class, () -> multimap().asMap().get(null));
  }

     *
     * @param id the ID of the web configuration setting to retrieve
     * @return JSON response containing the web configuration setting
     */
    // GET /api/admin/webconfig/setting/{id}
    @Execute
    public JsonResponse<ApiResult> get$setting(final String id) {
        return asJson(new ApiConfigResponse().setting(webConfigService.getWebConfig(id).map(this::createEditBody).orElseGet(() -> {

     * @param body the search body containing pagination and filter parameters
     * @return JSON response containing list of Kuromoji dictionary items
     */
    // GET /api/admin/dict/kuromoji/settings/{dictId}
    @Execute
    public JsonResponse<ApiResult> get$settings(final String dictId, final SearchBody body) {
        body.dictId = dictId;
        validateApi(body, messages -> {});

     * @param dictId identifier of the dictionary
     * @param body search criteria and paging parameters
     * @return JSON response containing list of entries
     */
    // GET /api/admin/dict/protwords/settings/{dictId}
    @Execute
    public JsonResponse<ApiResult> get$settings(final String dictId, final SearchBody body) {
        body.dictId = dictId;
        validateApi(body, messages -> {});