code: def _cleanup(name):
      try:
          sem_unlink(name)
      except FileNotFoundError:
          # Already unlinked, possibly by user code: ignore and make sure to
          # unregister the semaphore from the resource tracker.
          pass
      finally:
          resource_tracker.unregister(name, "semlock")
  
imports: import os
  import sys
  import tempfile
  import threading
  import _multiprocessing
  from time import time
  from multiprocessing import process, util
  from multiprocessing.context import assert_spawning
  from .None import resource_tracker
label_desc: Use image node_id 2 for calling the SemLock obj's underlying member method code with example usage: obj._cleanup(name) without return types