code: func (s *Storage) Config(c context.Context, cfg storage.Config) error {
  	if err := s.getIface().setMaxLogAge(c, cfg.MaxLogAge); err != nil {
  		log.WithError(err).Errorf(c, "Failed to set 'log' GC policy.")
  		return err
  	}
  	log.Fields{
  		"maxLogAge": cfg.MaxLogAge,
  	}.Infof(c, "Set maximum log age.")
  	return nil
  }
docs: // Config implements storage.Storage.