docs: private List<String> slurmCommand(String slurmScript, String heronExec,
                                      long containers, String partition) {
      String nTasks = String.format("--ntasks=%d", containers);
      List<String> slurmCmd;
      if (partition != null) {
        slurmCmd = new ArrayList<>(Arrays.asList("sbatch", "-N",
            Long.toString(containers), nTasks, "-p", partition, slurmScript, heronExec));
      } else {
        slurmCmd = new ArrayList<>(Arrays.asList("sbatch", "-N",
            Long.toString(containers), nTasks, slurmScript, heronExec));
      }
      return slurmCmd;
    }