code: def _check_sha256(
      self, path: pathlib.Path, *, chunk_size: int = 1024 * 1024
  ) -> None:
      hash = hashlib.sha256()
      with open(path, "rb") as file:
          while chunk := file.read(chunk_size):
              hash.update(chunk)
      sha256 = hash.hexdigest()
      if sha256 != self.sha256:
          raise RuntimeError(
              f"After the download, the SHA256 checksum of {path} didn't match the expected one: "
              f"{sha256} != {self.sha256}"
          )
  
imports: import abc
  import hashlib
  import itertools
  import pathlib
  from typing import Any, Callable, IO, Literal, NoReturn, Optional, Sequence, Set, Tuple, Union
  from urllib.parse import urlparse
  from torchdata.datapipes.iter import FileLister, FileOpener, IterableWrapper, IterDataPipe, RarArchiveLoader, TarArchiveLoader, ZipArchiveLoader
  from torchvision.datasets.utils import _decompress, _detect_file_type, _get_google_drive_file_id, _get_redirect_url, download_file_from_google_drive, download_url, extract_archive
label_desc: Use image node_id 9 for calling the OnlineResource obj's underlying member method code with example usage: obj._check_sha256(path) without return types