code: func fetchConfigs(c context.Context, f policy.ConfigFetcher) (policy.ConfigBundle, error) {
  	cfg := &admin.ServiceAccountsPermissions{}
  	if err := f.FetchTextProto(c, serviceAccountsCfg, cfg); err != nil {
  		return nil, err
  	}
  	return policy.ConfigBundle{serviceAccountsCfg: cfg}, nil
  }
docs: // fetchConfigs loads proto messages with rules from the config.