bucket, object, "",
      // Adding this parameter means HTTP_CODE_PRECONDITION_FAILED
      // will be returned if the object already exists, so avoid reuploading.
      gcs::IfGenerationMatch(0), gcs::Fields(""));
  TF_SetStatusFromGCSStatus(metadata.status(), status);
  if (TF_GetCode(status) == TF_FAILED_PRECONDITION)
    TF_SetStatus(status, TF_ALREADY_EXISTS, path);
}