code: def _etag_from_obj(
      obj: Union["boto3.s3.Object", "boto3.s3.ObjectSummary"]
  ) -> ETag:
      etag: ETag
      etag = obj.e_tag[1:-1]  # escape leading and trailing quote
      return etag
  
imports: import os
  import time
  from pathlib import PurePosixPath
  from typing import TYPE_CHECKING, Dict, Optional, Sequence, Tuple, Union
  from urllib.parse import parse_qsl, urlparse
  from wandb import util
  from wandb.errors import CommError
  from wandb.errors.term import termlog
  from wandb.sdk.artifacts.artifact_file_cache import get_artifact_file_cache
  from wandb.sdk.artifacts.artifact_manifest_entry import ArtifactManifestEntry
  from wandb.sdk.artifacts.storage_handler import DEFAULT_MAX_OBJECTS, StorageHandler
  from wandb.sdk.lib.hashutil import ETag
  from wandb.sdk.lib.paths import FilePathStr, StrPath, URIStr
label_desc: Use image node_id 9 for calling the S3Handler obj's underlying member method code with example usage: obj._etag_from_obj(obj) and returns: etag