* @throws IllegalStateException if the service manager reaches a state from which it cannot
   *     become {@linkplain #isHealthy() healthy}.
   */
  @SuppressWarnings("GoodTime") // should accept a java.time.Duration
  public void awaitHealthy(long timeout, TimeUnit unit) throws TimeoutException {
    state.awaitHealthy(timeout, unit);
  }

  /**

            final UpdateRequestBuilder builder =
                    ComponentUtil.getSearchEngineClient().prepareUpdate().setIndex(fessConfig.getIndexDocumentUpdateIndex()).setId(id);
            builderLambda.accept(builder);
            final UpdateResponse response = builder.execute().actionGet(fessConfig.getIndexIndexTimeout());
            return response.getResult() == Result.CREATED || response.getResult() == Result.UPDATED;

      for (int i = 0; i < params.size(); i++) {
        TypeToken<?> paramType = type.resolveType(typeVars[i]);
        // We require all @Generates methods to either be parameter-less or accept non-null
        // values for their generic parameter types.
        Object argValue = generate(paramType);
        if (argValue == null) {
          // When a parameter of a @Generates method cannot be created,

     *     next
     * @param unit the time unit of the initialDelay and delay parameters
     */
    @SuppressWarnings("GoodTime") // should accept a java.time.Duration
    public static Scheduler newFixedDelaySchedule(long initialDelay, long delay, TimeUnit unit) {
      checkNotNull(unit);
      checkArgument(delay > 0, "delay must be > 0, found %s", delay);

            "The network name cannot be found.",
            "No more connections can be made to this remote computer at this time because there are already as many connections as the computer can accept.",
            "Indicates a Windows NT Server could not be contacted or that objects within the domain are protected such that necessary information could not be retrieved.",

            for (Artifact artifact : artifacts) {
                String key = ArtifactUtils.key(artifact);
                keys.add(key);
            }
        }

        @Override
        public boolean accept(DependencyNode node, List<DependencyNode> parents) {
            Dependency dependency = node.getDependency();
            if (dependency != null) {

## Language Detection and Selection

### User Interface Language

Fess determines the UI language in this order:

1. **Query parameter**: `?browser_lang=[locale]` (highest priority)
2. **Browser header**: `Accept-Language` header
3. **Fallback**: English (from `fess_label.properties` and `fess_message.properties`)

### Document Language Detection

During crawling and indexing, Fess:

            List<String> nodeTrail = new ArrayList<>(trail.size() + 1);
            nodeTrail.addAll(trail);
            nodeTrail.add(artifact.getId());

            if (filter == null || filter.accept(node, Collections.emptyList())) {
                artifact.setDependencyTrail(nodeTrail);
                artifacts.add(artifact);
            }

            toArtifacts(artifacts, node.getChildren(), nodeTrail, filter);

            "No more connections can be made to this remote computer at this time because there are already as many connections as the computer can accept.",
            "Indicates a Windows NT Server could not be contacted or that objects within the domain are protected such that necessary information could not be retrieved.",

        ComponentUtil.getLdapManager()
                .validateGroupAttributes(Long.class, attributes,
                        s -> throwError.accept(messages -> messages.addErrorsPropertyTypeLong("attributes." + s, "attributes." + s)));
    }

    // ===================================================================================