public static final String ERRORS_failed_to_read_request_file = "{errors.failed_to_read_request_file}";

    /** The key of the message: Invalid header: {0} */
    public static final String ERRORS_invalid_header_for_request_file = "{errors.invalid_header_for_request_file}";

    /** The key of the message: Could not delete logged in user. */

    /** The key of the message: Fess */
    public static final String LABELS_header_brand_name = "{labels.header_brand_name}";

    /** The key of the message: Options */
    public static final String LABELS_header_form_option_btn = "{labels.header_form_option_btn}";

    /** The key of the message: File Crawling */

      try {
        stopwatch.start();
        V previousValue = oldValue.get();
        if (previousValue == null) {
          V newValue = loader.load(key);
          return set(newValue) ? futureValue : Futures.immediateFuture(newValue);
        }
        ListenableFuture<V> newValue = loader.reload(key, previousValue);
        if (newValue == null) {

      try {
        stopwatch.start();
        V previousValue = oldValue.get();
        if (previousValue == null) {
          V newValue = loader.load(key);
          return set(newValue) ? futureValue : Futures.immediateFuture(newValue);
        }
        ListenableFuture<V> newValue = loader.reload(key, previousValue);
        if (newValue == null) {