code: def verify_metadata(
      meta_file: str | Sequence[str] | None = None,
      filepath: PathLike | None = None,
      create_dir: bool | None = None,
      hash_val: str | None = None,
      hash_type: str | None = None,
      args_file: str | None = None,
      **kwargs: Any,
  ) -> None:
      """
      Verify the provided `metadata` file based on the predefined `schema`.
      `metadata` content must contain the `schema` field for the URL of schema file to download.
      The schema standard follows: http://json-schema.org/.
  
      Args:
          meta_file: filepath of the metadata file to verify, if `None`, must be provided in `args_file`.
              if it is a list of file paths, the content of them will be merged.
          filepath: file path to store the downloaded schema.
          create_dir: whether to create directories if not existing, default to `True`.
          hash_val: if not None, define the hash value to verify the downloaded schema file.
          hash_type: if not None, define the hash type to verify the downloaded schema file. Defaults to "md5".
          args_file: a JSON or YAML file to provide default values for all the args in this function.
              so that the command line inputs can be simplified.
          kwargs: other arguments for `jsonschema.validate()`. for more details:
              https://python-jsonschema.readthedocs.io/en/stable/validate/#jsonschema.validate.
  
      """
  
      _args = update_kwargs(
          args=args_file,
          meta_file=meta_file,
          filepath=filepath,
          create_dir=create_dir,
          hash_val=hash_val,
          hash_type=hash_type,
          **kwargs,
      )
      _log_input_summary(tag="verify_metadata", args=_args)
      (
          filepath_,
          meta_file_,
          create_dir_,
          hash_val_,
          hash_type_,
      ) = _pop_args(
          _args,
          "filepath",
          "meta_file",
          create_dir=True,
          hash_val=None,
          hash_type="md5",
      )
  
      check_parent_dir(path=filepath_, create_dir=create_dir_)
      metadata = ConfigParser.load_config_files(files=meta_file_)
      url = metadata.get("schema")
      if url is None:
          raise ValueError(
              "must provide the `schema` field in the metadata for the URL of schema file."
          )
      download_url(
          url=url,
          filepath=filepath_,
          hash_val=hash_val_,
          hash_type=hash_type_,
          progress=True,
      )
      schema = ConfigParser.load_config_file(filepath=filepath_)
  
      try:
          # the rest key-values in the _args are for `validate` API
          validate(instance=metadata, schema=schema, **_args)
      except ValidationError as e:  # pylint: disable=E0712
          # as the error message is very long, only extract the key information
          raise ValueError(
              re.compile(r".*Failed validating", re.S).findall(str(e))[
                  0
              ]
              + f" against schema `{url}`."
          ) from e
      logger.info("metadata is verified with no error.")
  
imports: from __future__ import annotations
  import ast
  import json
  import os
  import re
  import warnings
  from collections.abc import Mapping, Sequence
  from pathlib import Path
  from pydoc import locate
  from shutil import copyfile
  from textwrap import dedent
  from typing import Any, Callable
  import torch
  from torch.cuda import is_available
  from monai.apps.mmars.mmars import _get_all_ngc_models
  from monai.apps.utils import _basename, download_url, extractall, get_logger
  from monai.bundle.config_item import ConfigComponent
  from monai.bundle.config_parser import ConfigParser
  from monai.bundle.utils import DEFAULT_INFERENCE, DEFAULT_METADATA
  from monai.bundle.workflows import BundleWorkflow, ConfigWorkflow
  from monai.config import IgniteInfo, PathLike
  from monai.data import load_net_with_metadata, save_net_with_metadata
  from monai.networks import convert_to_onnx, convert_to_torchscript, convert_to_trt, copy_model_state, get_state_dict, save_state
  from monai.utils import check_parent_dir, deprecated_arg, ensure_tuple, get_equivalent_dtype, min_version, optional_import, pprint_edges
label_desc: Use image node_id 25 for calling a global function with example usage: verify_metadata(meta_file, filepath, create_dir, hash_val, hash_type, args_file) without return types