code: def check_special_tokens_dict_from_file(
      cls, special_tokens_dict, vocab_file
  ):
      for k, v in special_tokens_dict.items():
          if k[-6:] != "_token" or not SpecialTokenString.has_value(
              k[:-6]
          ):
              raise ValueError(
                  f"Unsupported key {repr(k)} in special tokens dictionary in vocabulary file {vocab_file} "
                  f"(first line). Supported keys are {[e.value + '_token' for e in SpecialTokenString]}."
              )
          if not isinstance(v, str):
              raise ValueError(
                  f"Values of special tokens dictionary in vocabulary file {vocab_file} (first line) has to belong "
                  f"to type `str`, whereas type of item '{k}' value {repr(v)} is `{type(v)}`."
              )
          elif len(v) == 0:
              raise ValueError(
                  f"Values of special tokens dictionary in vocabulary file {vocab_file} (first line) has to not "
                  f"empty strings, whereas value of item '{k}' is an empty string."
              )
      cls.check_special_tokens_dict_for_duplicate_values(
          special_tokens_dict,
          f"Loaded from vocabulary file {vocab_file}",
      )
  
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 2 for calling the CharTokenizer obj's underlying member method code with example usage: obj.check_special_tokens_dict_from_file(cls, special_tokens_dict, vocab_file) without return types