optaplanner-benchmark/src/main/java/org/optaplanner/benchmark/impl/statistic/bestsolutionmutation/BestSolutionMutationProblemStatistic.java
@Override
    public void writeGraphFiles(BenchmarkReport benchmarkReport) {
        XYPlot plot = createPlot(benchmarkReport);
        int seriesIndex = 0;
        for (SingleBenchmarkResult singleBenchmarkResult : problemBenchmarkResult.getSingleBenchmarkResultList()) {
            XYIntervalSeries series = new XYIntervalSeries(singleBenchmarkResult.getSolverBenchmarkResult().getNameWithFavoriteSuffix());
            XYItemRenderer renderer = new YIntervalRenderer();
            if (singleBenchmarkResult.hasAllSuccess()) {
                BestSolutionMutationSubSingleStatistic subSingleStatistic = (BestSolutionMutationSubSingleStatistic)
                        singleBenchmarkResult.getSubSingleStatistic(problemStatisticType);
                List<BestSolutionMutationStatisticPoint> points = subSingleStatistic.getPointList();
                for (BestSolutionMutationStatisticPoint point : points) {
                    long timeMillisSpent = point.getTimeMillisSpent();
                    long mutationCount = point.getMutationCount();
                    double yValue = mutationCount;
                    // In an XYInterval the yLow must be lower than yHigh
                    series.add(timeMillisSpent, timeMillisSpent, timeMillisSpent,
                            yValue, (yValue > 0.0) ? 0.0 : yValue, (yValue > 0.0) ? yValue : 0.0);
                }
            }
            XYIntervalSeriesCollection dataset = new XYIntervalSeriesCollection();
            dataset.addSeries(series);
            plot.setDataset(seriesIndex, dataset);

            if (singleBenchmarkResult.getSolverBenchmarkResult().isFavorite()) {
                // Make the favorite more obvious
                renderer.setSeriesStroke(0, new BasicStroke(2.0f));
            }
            plot.setRenderer(seriesIndex, renderer);
            seriesIndex++;
        }
        JFreeChart chart = new JFreeChart(problemBenchmarkResult.getName() + " best solution mutation statistic",
                JFreeChart.DEFAULT_TITLE_FONT, plot, true);
        graphFile = writeChartToImageFile(chart, problemBenchmarkResult.getName() + "BestSolutionMutationStatistic");
    }
@Override
    public void writeGraphFiles(BenchmarkReport benchmarkReport) {
        XYPlot plot = createPlot(benchmarkReport);
        int seriesIndex = 0;
        for (SingleBenchmarkResult singleBenchmarkResult : problemBenchmarkResult.getSingleBenchmarkResultList()) {
            XYIntervalSeries series = new XYIntervalSeries(singleBenchmarkResult.getSolverBenchmarkResult().getNameWithFavoriteSuffix());
            XYItemRenderer renderer = new YIntervalRenderer();
            if (singleBenchmarkResult.hasAllSuccess()) {
                BestSolutionMutationSubSingleStatistic subSingleStatistic = (BestSolutionMutationSubSingleStatistic)
                        singleBenchmarkResult.getSubSingleStatistic(problemStatisticType);
                List<BestSolutionMutationStatisticPoint> points = subSingleStatistic.getPointList();
                for (BestSolutionMutationStatisticPoint point : points) {
                    long timeMillisSpent = point.getTimeMillisSpent();
                    long mutationCount = point.getMutationCount();
                    double yValue = mutationCount;
                    // In an XYInterval the yLow must be lower than yHigh
                    series.add(timeMillisSpent, timeMillisSpent, timeMillisSpent,
                            yValue, (yValue > 0.0) ? 0.0 : yValue, (yValue > 0.0) ? yValue : 0.0);
                }
            }
            XYIntervalSeriesCollection dataset = new XYIntervalSeriesCollection();
            dataset.addSeries(series);
            plot.setDataset(seriesIndex, dataset);

            if (singleBenchmarkResult.getSolverBenchmarkResult().isFavorite()) {
                // Make the favorite more obvious
                renderer.setSeriesStroke(0, new BasicStroke(2.0f));
            }
            plot.setRenderer(seriesIndex, renderer);
            seriesIndex++;
        }
        JFreeChart chart = new JFreeChart(problemBenchmarkResult.getName() + " best solution mutation statistic",
                JFreeChart.DEFAULT_TITLE_FONT, plot, true);
        graphFile = writeChartToImageFile(chart, problemBenchmarkResult.getName() + "BestSolutionMutationStatistic");
    }
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