code: def _cleanup(name):
      from .resource_tracker import unregister
  
      sem_unlink(name)
      unregister(name, "semaphore")
  
imports: import threading
  import sys
  import tempfile
  import time
  from .None import context
  from .None import process
  from .None import util
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