code: def check_readme(overwrite: bool = False):
      """
      Check if the main README contains all the models in the library or not.
  
      Args:
          overwrite (`bool`, *optional*, defaults to `False`):
              Whether or not to add an entry for the missing models using `README_TEMPLATE`.
      """
      info = LOCALIZED_READMES["README.md"]
      models, start_index, end_index, lines = _find_text_in_file(
          os.path.join(REPO_PATH, "README.md"),
          info["start_prompt"],
          info["end_prompt"],
      )
      models_in_readme = [
          re.search(r"\*\*\[([^\]]*)", line).groups()[0]
          for line in models.strip().split("\n")
      ]
  
      model_names_mapping = (
          transformers_module.models.auto.configuration_auto.MODEL_NAMES_MAPPING
      )
      absents = [
          (key, name)
          for key, name in model_names_mapping.items()
          if SPECIAL_MODEL_NAMES.get(name, name) not in models_in_readme
      ]
      # Remove exceptions
      absents = [
          (key, name)
          for key, name in absents
          if name not in MODELS_NOT_IN_README
      ]
      if len(absents) > 0 and not overwrite:
          print(absents)
          raise ValueError(
              "The main README doesn't contain all models, run `make fix-copies` to fill it with the missing model(s)"
              " then complete the generated entries.\nIf the model is not supposed to be in the main README, add it to"
              " the list `MODELS_NOT_IN_README` in utils/check_copies.py.\nIf it has a different name in the repo than"
              " in the README, map the correspondence in `SPECIAL_MODEL_NAMES` in utils/check_copies.py."
          )
  
      new_models = [
          README_TEMPLATE.format(model_name=name, model_type=key)
          for key, name in absents
      ]
  
      all_models = models.strip().split("\n") + new_models
      all_models = sorted(
          all_models,
          key=lambda x: re.search(r"\*\*\[([^\]]*)", x)
          .groups()[0]
          .lower(),
      )
      all_models = "\n".join(all_models) + "\n"
  
      if all_models != models:
          if overwrite:
              print("Fixing the main README.")
              with open(
                  os.path.join(REPO_PATH, "README.md"),
                  "w",
                  encoding="utf-8",
                  newline="\n",
              ) as f:
                  f.writelines(
                      lines[:start_index]
                      + [all_models]
                      + lines[end_index:]
                  )
          else:
              raise ValueError(
                  "The main README model list is not properly sorted. Run `make fix-copies` to fix this."
              )
  
imports: import argparse
  import glob
  import os
  import re
  import subprocess
  from collections import OrderedDict
  from typing import List, Optional, Tuple, Union
  from transformers.utils import direct_transformers_import
label_desc: Use image node_id 20 for calling a global function with example usage: check_readme(overwrite) without return types