public void error(String msg, Throwable t);

    public void error(String format, Object... argArray) {
        filterAndLog_0_Or3Plus(FQCN, null, Level.ERROR, format, argArray, null);
    }
    public void error(String msg, Throwable t) {
        filterAndLog_0_Or3Plus(FQCN, null, Level.ERROR, msg, null, t);
    }

        this.message = message;
        this.argumentArray = argArray;

        if (throwable == null) {
            throwable = extractThrowableAnRearrangeArguments(argArray);
        }

        if (throwable != null) {
            this.throwableProxy = new ThrowableProxy(throwable);
            LoggerContext lc = logger.getLoggerContext();
            if (lc.isPackagingDataEnabled()) {
                this.throwableProxy.calculatePackagingData();
            }
        }