code: func Get(ctx context.Context) (*Settings, error) {
  	s := &Settings{}
  	if err := settings.Get(ctx, settingsKey, s); err != nil && err != settings.ErrNoSettings {
  		return nil, errors.Annotate(err, "failed to fetch settings").
  			Tag(grpcutil.InternalTag, transient.Tag).Err()
  	}
  	if s.StorageGSPath == "" || s.TempGSPath == "" {
  		return nil, errors.Reason("the backend is not configured").
  			Tag(grpcutil.InternalTag).Err()
  	}
  	return s, nil
  }
docs: // Get returns the settings from the local cache, checking they are populated.
  //
  // Returns grpc-annotated Internal error if something is wrong.