public void debug(String format, Object arg) {
        if (!logger.isDebugEnabled())
            return;

        if (instanceofLAL) {
            ((LocationAwareLogger) logger).log(null, fqcn, LocationAwareLogger.DEBUG_INT, format, new Object[] { arg }, null);
        } else {
            logger.debug(format, arg);
        }
    }
Delegate to the appropriate method of the underlying logger.
slf4j-ext/src/main/java/org/slf4j/ext/LoggerWrapper.java