code: func (r *ImportDelegationConfigsRPC) ImportDelegationConfigs(c context.Context, _ *empty.Empty) (*admin.ImportedConfigs, error) {
  	rev, err := r.RulesCache.ImportConfigs(c)
  	if err != nil {
  		logging.WithError(err).Errorf(c, "Failed to fetch delegation configs")
  		return nil, status.Errorf(codes.Internal, err.Error())
  	}
  	return &admin.ImportedConfigs{Revision: rev}, nil
  }
docs: // ImportDelegationConfigs fetches configs from from luci-config right now.