private ApplicationTimeHistogram createApplicationLevelTimeSeriesResponseTime(List<ResponseTime> responseHistogramList) {
            ApplicationTimeHistogramBuilder builder = new ApplicationTimeHistogramBuilder(application, range);
            return builder.build(responseHistogramList);
        }
this class is a collection of
applicationHistogram
agentHistogram
applicationTimeHistogram
agentTimeHistogram

@author emeroad
web/src/main/java/com/navercorp/pinpoint/web/applicationmap/histogram/NodeHistogram.java