code: def __str__(self) -> str:
      return self.value
  
imports: import dataclasses
  import enum
  from typing import Any, Dict, List, Mapping
  from etils import epath
  import h5py
  import numpy
  import tensorflow_datasets.public_api
  import tree
label_desc: Use image node_id 1 for calling the ObservationType obj's underlying member method code with example usage: obj.__str__() and returns: self