code: func (ub *URLBuilder) BuildCatalogURL(values ...url.Values) (string, error) {
  	route := ub.cloneRoute(RouteNameCatalog)
  
  	catalogURL, err := route.URL()
  	if err != nil {
  		return "", err
  	}
  
  	return appendValuesURL(catalogURL, values...).String(), nil
  }
docs: // BuildCatalogURL constructs a url get a catalog of repositories