/** The key of the message: Page Number */
    public static final String LABELS_PN = "{labels.pn}";

    /** The key of the message: Scheme */
    public static final String LABELS_PROTOCOL_SCHEME = "{labels.protocolScheme}";

    /** The key of the message: Purge Bots */
    public static final String LABELS_PURGE_BY_BOTS = "{labels.purgeByBots}";

    /** The key of the message: Log Level */