code: def add_slurm_cmd(self, cmd, value, comment):
      self.slurm_commands.append((cmd, value, comment))
  
imports: import datetime
  import os
  import signal
  import sys
  import time
  import traceback
  from subprocess import call
  from .argparse_hopt import HyperOptArgumentParser
label_desc: Use image node_id 6 for calling the AbstractCluster obj's underlying member method code with example usage: obj.add_slurm_cmd(cmd, value, comment) without return types