class_docstr: A wrapper type for ray.ObjectRef. Currently supports ray.get but not
  ray.wait.
code: def __reduce__(self):
      return self._from_base_ref, (self._base_ref, self._num_readers)
  
file_path: ray/python/ray/experimental/channel.py
imports: import io
  import logging
  from typing import Any, Optional
  import ray
  from ray.util.annotations import PublicAPI
label_desc: Use image node_id 3 for calling the Channel obj's underlying member method code with example usage: obj.__reduce__() and returns: self,  self,  self