bucket_src, object_src, bucket_dst, object_dst,
      gcs::Fields("done,rewriteToken"));
  TF_SetStatusFromGCSStatus(metadata.status(), status);
}

bool IsDirectory(const TF_Filesystem* filesystem, const char* path,
                 TF_Status* status) {
  std::string bucket, object;
  ParseGCSPath(path, true, &bucket, &object, status);
  if (TF_GetCode(status) != TF_OK) return false;