* This method calculates the appropriate delay for the current time
     * and applies it by sleeping the current thread.
     */
    public void delayByRules() {
        final long delay = getDelay();
        if (delay > 0) {
            ThreadUtil.sleep(delay);
        }
    }

    /**
     * Calculates the delay in milliseconds based on current time and configured rules.

    protected ThreadUtil() {
    }

    /**
     * Causes the currently executing thread to sleep (temporarily cease execution) for the specified number of milliseconds.
     *
     * @param millis
     *            the length of time to sleep in milliseconds
     * @throws InterruptedRuntimeException
     *             if any thread has interrupted the current thread.
     */
    public static void sleep(final long millis) {

            .toString()
            .contains("java.util.Map.java.util.Map")) {
          CURRENT = JAVA8;
        } else {
          CURRENT = JAVA9;
        }
      } else if (new TypeCapture<int[]>() {}.capture() instanceof Class) {
        CURRENT = JAVA7;
      } else {
        CURRENT = JAVA6;
      }
    }

    abstract Type newArrayType(Type componentType);

            .toString()
            .contains("java.util.Map.java.util.Map")) {
          CURRENT = JAVA8;
        } else {
          CURRENT = JAVA9;
        }
      } else if (new TypeCapture<int[]>() {}.capture() instanceof Class) {
        CURRENT = JAVA7;
      } else {
        CURRENT = JAVA6;
      }
    }

    abstract Type newArrayType(Type componentType);

     *
     * @param prefix the line number prefix pattern
     * @param style the CSS class name for styling
     * @param mimetype the MIME type of the content (currently unused)
     * @param input the code content to format
     * @return HTML formatted code with line numbers and styling
     */

        });
    }

    /**
     * Inserts a login record for the given member.
     * Currently this method does nothing.
     *
     * @param member the member to insert a login record for
     */
    protected void insertLogin(final Object member) {
        // nothing
    }

    /**
     * Checks if the current user has permission to access the given resource.

     * Defaults to normal thread priority.
     */
    protected int crawlerPriority = Thread.NORM_PRIORITY;

    /**
     * Thread-safe list of active data crawling threads.
     * Used to track and manage all currently running crawler threads.
     */
    protected final List<DataCrawlingThread> dataCrawlingThreadList = Collections.synchronizedList(new ArrayList<>());

    /**
     * Creates a new instance of DataIndexHelper.

    }

    /**
     * Gets the current time as a Date object.
     *
     * @return The current time.
     */
    public Date getCurrentTime() {
        return new Date(getCurrentTimeAsLong());
    }

    /**
     * Gets the current time in milliseconds.
     *
     * @return The current time in milliseconds.
     */
    public long getCurrentTimeAsLong() {

 * useful test to determine if a domain is a plausible web host is {@link #hasPublicSuffix()}. This
 * will return {@code true} for many domains which (currently) are not hosts, such as {@code "com"},
 * but given that any public suffix may become a host without warning, it is better to err on the
 * side of permissiveness and thus avoid spurious rejection of valid sites. Of course, to actually

   * implementation; otherwise refreshes will be performed during unrelated cache read and write
   * operations.
   *
   * <p>Currently automatic refreshes are performed when the first stale request for an entry
   * occurs. The request triggering refresh will make a synchronous call to {@link
   * CacheLoader#reload}