code: func (srv *Config) Get(c context.Context, req *config.GetRequest) (*config.Config, error) {
  	cfg, ok := srv.cfg.Load(req.GetId())
  	if !ok {
  		return nil, status.Errorf(codes.NotFound, "no config found with ID %q", req.GetId())
  	}
  	return cfg.(*config.Config), nil
  }
docs: // Get handles a request to get a config.