private ServerGroupListFactory newServerGroupListFactory(boolean isUseStatisticsAgentState) {
        ServerGroupListDataSource serverGroupListDataSource = serverInstanceDatasourceService.getServerGroupListDataSource();
        if (isUseStatisticsAgentState) {
            return new StatisticsServerGroupListFactory(serverGroupListDataSource);
        } else {
            return new DefaultServerGroupListFactory(serverGroupListDataSource);
        }
    }
Used in the main UI - draws the server map by querying the timeslot by time.
web/src/main/java/com/navercorp/pinpoint/web/applicationmap/service/MapServiceImpl.java