code: public void initBenchmarkReportDirectory(File benchmarkDirectory) {
          String timestampString = startingTimestamp.format(DateTimeFormatter.ofPattern("yyyy-MM-dd_HHmmss"));
          if (StringUtils.isEmpty(name)) {
              name = timestampString;
          }
          if (!benchmarkDirectory.mkdirs()) {
              if (!benchmarkDirectory.isDirectory()) {
                  throw new IllegalArgumentException("The benchmarkDirectory (" + benchmarkDirectory
                          + ") already exists, but is not a directory.");
              }
              if (!benchmarkDirectory.canWrite()) {
                  throw new IllegalArgumentException("The benchmarkDirectory (" + benchmarkDirectory
                          + ") already exists, but is not writable.");
              }
          }
          int duplicationIndex = 0;
          do {
              String directoryName = timestampString + (duplicationIndex == 0 ? "" : "_" + duplicationIndex);
              duplicationIndex++;
              benchmarkReportDirectory = new File(benchmarkDirectory,
                      BooleanUtils.isFalse(aggregation) ? directoryName : directoryName + "_aggregation");
          } while (!benchmarkReportDirectory.mkdir());
          for (ProblemBenchmarkResult problemBenchmarkResult : unifiedProblemBenchmarkResultList) {
              problemBenchmarkResult.makeDirs();
          }
      }
docs: ************************************************************************