private Level fixExtremeLevels(Level jplLevel) {
        if (jplLevel == Level.OFF)
            return  Level.ERROR;

        if (jplLevel == Level.ALL)
            return Level.TRACE;

        return jplLevel;
    }
<p>Level.OFF and Level.ALL levels are not supposed to be used when calling log printing methods.
</p>

<p>We compensate for such incorrect usage by transforming Level.OFF as Level.ERROR and
Level.ALL as Level.TRACE.
</p>

@param jplLevel
@return
slf4j-jdk-platform-logging/src/main/java/org/slf4j/jdk/platform/logging/SLF4JPlatformLogger.java