code: def _unregister_cloudpickle_reducer(self, cls):
      pickle.CloudPickler.dispatch.pop(cls, None)
  
file_path: ray/python/ray/util/serialization.py
imports: import ray
  import ray.cloudpickle
  from ray.util.annotations import DeveloperAPI, PublicAPI
label_desc: Use image node_id 2 for calling the StandaloneSerializationContext obj's underlying member method code with example usage: obj._unregister_cloudpickle_reducer(cls) without return types