ops->writable_file_ops->tell = tf_writable_file::Tell;
  ops->writable_file_ops->flush = tf_writable_file::Flush;
  ops->writable_file_ops->sync = tf_writable_file::Sync;
  ops->writable_file_ops->close = tf_writable_file::Close;

  ops->read_only_memory_region_ops = static_cast<TF_ReadOnlyMemoryRegionOps*>(
      plugin_memory_allocate(TF_READ_ONLY_MEMORY_REGION_OPS_SIZE));
  ops->read_only_memory_region_ops->cleanup =

    tf_writable_file::Append(writer.get(), content.c_str(), content.length(),
                             status_);
    if (TF_GetCode(status_) != TF_OK) return;
    tf_writable_file::Close(writer.get(), status_);
    if (TF_GetCode(status_) != TF_OK) return;
  }

  std::string ReadAll(const std::string& path) {
    auto reader = GetReader();

// objects.
constexpr char kComposeAppend[] = "compose";

// We can cast `google::cloud::StatusCode` to `TF_Code` because they have the
// same integer values. See
// https://github.com/googleapis/google-cloud-cpp/blob/6c09cbfa0160bc046e5509b4dd2ab4b872648b4a/google/cloud/status.h#L32-L52
static inline void TF_SetStatusFromGCSStatus(
    const google::cloud::Status& gcs_status, TF_Status* status) {

  return StatusFromTF_Status(plugin_status.get());
}

Status ModularWritableFile::Close() {
  if (ops_->close == nullptr)
    return errors::Unimplemented(
        tensorflow::strings::StrCat("Close() not implemented for ", filename_));

  UniquePtrTo_TF_Status plugin_status(TF_NewStatus(), TF_DeleteStatus);
  ops_->close(file_.get(), plugin_status.get());
  return StatusFromTF_Status(plugin_status.get());
}