/** A map of design JSP file names. */
    protected final Map<String, String> designJspFileNameMap = new LinkedHashMap<>();

    /** A flag to indicate if the system should be forcefully stopped. */
    protected final AtomicBoolean forceStop = new AtomicBoolean(false);

    /** A cache for language items. */
    protected LoadingCache<String, List<Map<String, String>>> langItemsCache;