code: def get(self, bucket: str, key: str) -> bytes:
          
          bucket_obj = self._ensure_bucket_loaded(bucket)
          blob_obj = bucket_obj.blob(key)
  
          try:
              return blob_obj.download_as_string()
          except NotFound:
              raise BlobNotFoundError(f"Could not find gs://{bucket}/{key}")
docs: Retrieves the data for a given object in a given bucket.
          :param bucket: the bucket the object resides in.
          :param key: the key of the object for which metadata is being
          retrieved.
          :return: the data