private void populateAgentNameListOfList(Collection<List<SpanBo>> listOfList) {
        if (CollectionUtils.isEmpty(listOfList)) {
            return;
        }
        final List<SpanBo> list = listOfList.stream().flatMap(List::stream).collect(Collectors.toList());
        populateAgentName(list);
    }
Queries for details on dots selected from the scatter chart.
web/src/main/java/com/navercorp/pinpoint/web/service/ScatterChartServiceImpl.java