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

    //
    // system.properties
    //

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

    default String getSystemProperty(final String key) {
        return ComponentUtil.getSystemProperties().getProperty(key, System.getProperty(Constants.SYSTEM_PROP_PREFIX + key));
    }

                this.lastAccess = info.getLastAccessTime();
                this.attrExpiration = System.currentTimeMillis() + th.getConfig().getAttributeCacheTimeout();
            }
            else if ( info instanceof FileStandardInfo ) {
                this.size = info.getSize();
                this.sizeExpiration = System.currentTimeMillis() + th.getConfig().getAttributeCacheTimeout();
            }
            return info;

            default:
                runner = new OpenSearchRunner();
                final Configs config = newConfigs().clusterName(clusterName).numOfNode(1).useLogger();
                final String esDir = System.getProperty("fess.es.dir");
                if (esDir != null) {
                    config.basePath(esDir);
                }
                config.disableESLogger();