return new LogMessage(LogLevel.ERROR, message);
        case 'F':
            return new LogMessage(LogLevel.FATAL, message);
        default:
            throw new ClIllegalArgumentException("messageCode", "ECL0009", asArray(messageCode, "messageCode : " + messageCode));
        }
    }

    /**
     * Initializes the {@link Logger}.
     */
    protected static synchronized void initialize() {