GetURIForPath("a_file"),
      GetURIForPath("another_file"),
  };
  const std::vector<std::string> other_filenames = {
      GetURIForPath("some_file"),
      GetURIForPath("yet_another_file"),
  };

  for (const auto& filename : matching_filenames) {
    std::unique_ptr<WritableFile> file;
    Status status = env_->NewWritableFile(filename, &file);
    if (!status.ok())