final var config = ComponentUtil.getFessConfig();

        final String temp = config.getOrDefault(prefix + ".temperature", null);
        if (temp != null) {
            request.setTemperature(Double.parseDouble(temp));
        }
        final String maxTokens = config.getOrDefault(prefix + ".max.tokens", null);
        if (maxTokens != null) {
            request.setMaxTokens(Integer.parseInt(maxTokens));

      synchronized (mutex) {
        return delegate().get(key);
      }
    }

    @Override
    public @Nullable V getOrDefault(@Nullable Object key, @Nullable V defaultValue) {
      synchronized (mutex) {
        return delegate().getOrDefault(key, defaultValue);
      }
    }

    @Override
    public boolean isEmpty() {
      synchronized (mutex) {

                                if (phase == null) {
                                    continue;
                                }
                                String tmpResolvedPhase = plan.aliases().getOrDefault(phase, phase);
                                String resolvedPhase = tmpResolvedPhase.startsWith(AT)
                                        ? tmpResolvedPhase.substring(AT.length())

    String CRAWLER_METADATA_CONTENT_EXCLUDES = "crawlerMetadataContentExcludes";

    Map<String, Object> propMap = new ConcurrentHashMap<>();

    String getOrDefault(String propertyKey, String defaultValue);

    //
    // system.properties
    //

    default void storeSystemProperties() {
        ComponentUtil.getSystemProperties().store();
    }

        @Override
        public HighlightInfo getHighlightInfo() {
            return new HighlightInfo().fragmentSize(Integer.parseInt(fessConfig.getOrDefault("rag.chat.highlight.fragment.size", "500")))
                    .numOfFragments(Integer.parseInt(fessConfig.getOrDefault("rag.chat.highlight.number.of.fragments", "3")))
                    .preTags(StringUtil.EMPTY)
                    .postTags(StringUtil.EMPTY);
        }