code: def _maybe_kill_ipcontroller_process(profile):
      "Try to kill the ipcontroller process through read the pid file."
      "Return True if it found process and killed it successfully."
      pid = _get_ipcontroller_pid(profile)
      if pid is None:
          print(
              "Try to kill ipcontroller process but cannot retrieve its pid. "
              "Maybe it is already been stopped."
          )
          return False
      try:
          for _ in range(2):  # Kill two times
              os.kill(pid, signal.SIGINT)
          return True
      except:
          return False
  
imports: import argparse
  import json
  import os
  import multiprocessing
  import signal
  import subprocess
  import time
  from typing import Dict, List
  import ipyparallel
  import bluefog
  from bluefog.run import env_util, network_util, horovod_driver
label_desc: Use image node_id 12 for calling a global function with example usage: _maybe_kill_ipcontroller_process(profile) and returns: False, True, False