@Override
    public void getValue(Map<String, Long> keyValMap, boolean includeZero) {
        keyValMap.put(this.count.getFullName(), this.count.getValue());
        keyValMap.put(this.min.getFullName(), this.min.getValue());
        keyValMap.put(this.max.getFullName(), this.max.getValue());
    }
Simple Histogram Statistics, only include count, min, max value information.
inlong-tubemq/tubemq-core/src/main/java/org/apache/inlong/tubemq/corebase/metric/impl/SimpleHistogram.java