code: def getfd(self):
      self.ensure_running()
      return self._fd
  
file_path: catboost/contrib/python/joblib/joblib/externals/loky/backend/resource_tracker.py
imports: import os
  import shutil
  import sys
  import signal
  import warnings
  import threading
  from _multiprocessing import sem_unlink
  from multiprocessing import util
  from .None import spawn
label_desc: Use image node_id 2 for calling the ResourceTracker obj's underlying member method code with example usage: obj.getfd() and returns: self