public static final String SYSTEM_USER = "system";

    /** Empty user ID placeholder. */
    public static final String EMPTY_USER_ID = "<empty>";

    /** Crawler process command for thread dump. */
    public static final String CRAWLER_PROCESS_COMMAND_THREAD_DUMP = "thread_dump";

    // ============================================================
    // Path and Configuration Constants

     * Get the value for the key 'indexer.thread.dump.enabled'. <br>
     * The value is, e.g. true <br>
     * comment: Whether to enable thread dump for the indexer.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getIndexerThreadDumpEnabled();

    /**
     * Is the property for the key 'indexer.thread.dump.enabled' true? <br>

    /** The key of the message: Cancel */
    public static final String LABELS_crawling_info_delete_all_cancel = "{labels.crawling_info_delete_all_cancel}";

    /** The key of the message: Thread Dump */
    public static final String LABELS_crawling_info_thread_dump = "{labels.crawling_info_thread_dump}";

    /** The key of the message: Crawler Start Time */