res := map[string]k8s.GatewayController{}
	// Setup builtin ones - these can be overridden possibly
	for name, controller := range builtinClasses {
		res[string(name)] = controller
	}
	for _, obj := range r.GatewayClass {
		gwc := obj.Spec.(*k8s.GatewayClassSpec)
		_, known := classInfos[gwc.ControllerName]
		if !known {
			continue
		}