gcs_uri- The GCS URI of the object (e.g., “gs://bucket-name/path/to/object”).api_key- If specified, unify API key to be used. Defaults to the value
- content_type: The MIME type of the object (or None if not set).
- size_bytes: The size of the object in bytes.
RequestError: If the request fails (e.g., object not found, invalid URI).
