code: def has_value(cls, value):
      return value in cls._value2member_map_
  
imports: import json
  import os
  import warnings
  from collections import Counter
  from enum import Enum
  from pathlib import Path
  from typing import Dict, List, NewType, Optional, Union
  from nemo.collections.common.tokenizers.tokenizer_spec import TokenizerSpec
label_desc: Use image node_id 1 for calling the SpecialTokenString obj's underlying member method code with example usage: obj.has_value(cls, value) and returns: unknown