code: def optimize_parallel_cluster(
      self, train_function, nb_trials, job_name
  ):
      raise NotImplementedError
  
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 10 for calling the AbstractCluster obj's underlying member method code with example usage: obj.optimize_parallel_cluster(train_function, nb_trials, job_name) without return types