Method add

clients/src/main/java/org/apache/kafka/common/metrics/Sensor.java:125–127

Register a compound statistic with this sensor with no config override

(CompoundStat stat)

     * Register a compound statistic with this sensor with no config override
     */
    public void add(CompoundStat stat) {
        add(stat, null);
    }

    /**
     * Register a compound statistic with this sensor which yields multiple measurable quantities (like a histogram)