}
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        langFields = fessConfig.getIndexerLanguageFieldsAsArray();
        supportedLanguages = fessConfig.getSupportedLanguagesAsArray();
        maxTextLength = fessConfig.getIndexerLanguageDetectLengthAsInteger();
    }

    /**
     * Updates a document with language information.
     *
     * @param doc The document to update.

        @Override
        public String[] getIndexerLanguageFieldsAsArray() {
            return new String[] { "title", "content" };
        }

        @Override
        public String[] getSupportedLanguagesAsArray() {
            return new String[] { "ja", "en", "zh", "ko" };
        }

        @Override
        public Integer getIndexerLanguageDetectLengthAsInteger() {
            return 1000;
        }

        }
        updateSystemProperties();
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        filterPathEncoding = fessConfig.getPathEncoding();
        supportedLanguages = fessConfig.getSupportedLanguagesAsArray();
        langItemsCache = CacheBuilder.newBuilder()
                .maximumSize(20)
                .expireAfterAccess(1, TimeUnit.HOURS)

            propMap.put(SMB_AVAILABLE_SID_TYPES, params);
        }
        return params.get(sidType);
    }

    String getSupportedLanguages();

    default String[] getSupportedLanguagesAsArray() {
        return split(getSupportedLanguages(), ",").get(stream -> stream.filter(StringUtil::isNotBlank).toArray(n -> new String[n]));
    }

    String getOnlineHelpSupportedLangs();