optaplanner-benchmark/src/main/java/org/optaplanner/benchmark/impl/result/ProblemBenchmarkResult.java
public void accumulateResults(BenchmarkReport benchmarkReport) {
        for (SingleBenchmarkResult singleBenchmarkResult : singleBenchmarkResultList) {
            singleBenchmarkResult.accumulateResults(benchmarkReport);
        }
        determineTotalsAndAveragesAndRanking();
        determineWinningScoreDifference();
        for (ProblemStatistic problemStatistic : problemStatisticList) {
            problemStatistic.accumulateResults(benchmarkReport);
        }
    }
public void accumulateResults(BenchmarkReport benchmarkReport) {
        for (SingleBenchmarkResult singleBenchmarkResult : singleBenchmarkResultList) {
            singleBenchmarkResult.accumulateResults(benchmarkReport);
        }
        determineTotalsAndAveragesAndRanking();
        determineWinningScoreDifference();
        for (ProblemStatistic problemStatistic : problemStatisticList) {
            problemStatistic.accumulateResults(benchmarkReport);
        }
    }
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