private ServerGroupListFactory createServerGroupListFactory(boolean isUseStatisticsAgentState) {
        ServerGroupListDataSource serverGroupListDataSource = serverInstanceDatasourceService.getServerGroupListDataSource();
        if (isUseStatisticsAgentState) {
            return new StatisticsServerGroupListFactory(serverGroupListDataSource);
        }
        return new DefaultServerGroupListFactory(serverGroupListDataSource);
    }
@author HyunGil Jeong
@author jaehong.kim
web/src/main/java/com/navercorp/pinpoint/web/applicationmap/service/ResponseTimeHistogramServiceImpl.java