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";