code: def init_gcs(self) -> "gcs_module.client.Client":
      if self._client is not None:
          return self._client
      storage = util.get_module(
          "google.cloud.storage",
          required="gs:// references requires the google-cloud-storage library, run pip install wandb[gcp]",
      )
      self._client = storage.Client()
      return self._client
  
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 3 for calling the GCSHandler obj's underlying member method code with example usage: obj.init_gcs() and returns: self, self