class_docstr: Wrapper class of threading.Lock(), which is allowed by 'with'.
code: def __exit__(self, exc_type, exc_value, exc_tb):
      self._lock.release()
  
imports: import threading
  import warnings
  from google.protobuf.internal import api_implementation
label_desc: Use image node_id 3 for calling the _Lock obj's underlying member method code with example usage: obj.__exit__(exc_type, exc_value, exc_tb) without return types