code: def _extra_from_obj(obj: "gcs_module.blob.Blob") -> Dict[str, str]:
      return {
          "etag": obj.etag,
          "versionID": obj.generation,
      }
  
imports: import time
  from pathlib import PurePosixPath
  from typing import TYPE_CHECKING, Dict, Optional, Sequence, Tuple, Union
  from urllib.parse import ParseResult, urlparse
  from wandb import util
  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 B64MD5
  from wandb.sdk.lib.paths import FilePathStr, StrPath, URIStr
label_desc: Use image node_id 8 for calling the GCSHandler obj's underlying member method code with example usage: obj._extra_from_obj(obj) and returns: dict