code: def terminate(self):
      if self.returncode is None:
          try:
              os.kill(self.pid, signal.SIGTERM)
          except ProcessLookupError:
              pass
          except OSError:
              if self.wait(timeout=0.1) is None:
                  raise
  
file_path: catboost/contrib/python/joblib/joblib/externals/loky/backend/popen_loky_posix.py
imports: import os
  import sys
  import signal
  import pickle
  from io import BytesIO
  from multiprocessing import util, process
  from multiprocessing.connection import wait
  from multiprocessing.context import set_spawning_popen
  from .None import reduction, resource_tracker, spawn
label_desc: Use image node_id 5 for calling the Popen obj's underlying member method code with example usage: obj.terminate() without return types