/**
     * UTF-8
     */
    public static final String UTF_8 = "UTF-8";

    public static final Charset CHARSET_UTF_8 = Charset.forName(UTF_8);

    public static final String DATE_FORMAT_ISO_8601_BASIC = "yyyyMMdd'T'HHmmss.SSSZ";

    public static final String DATE_FORMAT_ISO_8601_EXTEND = "yyyy-MM-dd'T'HH:mm:ss.SSSZ";

    public static final String DATE_FORMAT_ISO_8601_EXTEND_UTC = "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'";

    String FILE_ROLE_FROM_FILE = "file.role.from.file";

    /** The key of the configuration. e.g. true */
    String FTP_ROLE_FROM_FILE = "ftp.role.from.file";

    /** The key of the configuration. e.g. fess_basic_config.bulk,fess_config.bulk,fess_user.bulk,system.properties,fess.json,doc.json */
    String INDEX_BACKUP_TARGETS = "index.backup.targets";

    public static final String LABELS_webauth_web_crawling_config = "{labels.webauth_web_crawling_config}";

    /** The key of the message: Basic */
    public static final String LABELS_webauth_scheme_basic = "{labels.webauth_scheme_basic}";

    /** The key of the message: Digest */
    public static final String LABELS_webauth_scheme_digest = "{labels.webauth_scheme_digest}";