if c.destRule != nil {
		configs = append(configs, config.Config{
			Meta: config.Meta{
				GroupVersionKind: gvk.DestinationRule,
				Name:             "acme",
			},
			Spec: c.destRule,
		})
	}
	if c.sidecar != nil {
		configs = append(configs, config.Config{
			Meta: config.Meta{
				GroupVersionKind: gvk.Sidecar,
				Name:             "default",
			},
			Spec: c.sidecar,
		})
	}

	}

	canoncalGroup := targetRef.Group
	if canoncalGroup == "" {
		canoncalGroup = "core"
	}
	allowed := slices.FindFunc(allowedTargetRefs, func(gvk config.GroupVersionKind) bool {
		return gvk.Kind == targetRef.Kind && gvk.CanonicalGroup() == canoncalGroup
	}) != nil

	if !allowed {
		v = appendErrorf(v, "targetRef must be to one of %v but was %s/%s",

	"istio.io/istio/pkg/config"
	"istio.io/istio/pkg/config/constants"
	"istio.io/istio/pkg/config/host"
	"istio.io/istio/pkg/config/labels"
	"istio.io/istio/pkg/config/protocol"
	"istio.io/istio/pkg/config/schema/gvk"
	"istio.io/istio/pkg/network"
	"istio.io/istio/pkg/security"
	"istio.io/istio/pkg/test"
	"istio.io/istio/pkg/test/util/assert"
	"istio.io/istio/pkg/util/sets"
)

func TestApplyDestinationRule(t *testing.T) {

	if controllerRef != nil {
		withKind := true
		gv, err := schema.ParseGroupVersion(controllerRef.APIVersion)
		if err != nil {
			return nil, err
		}
		gvk := gv.WithKind(controllerRef.Kind)
		controllerName = formatResourceName(gvk.GroupKind(), controllerRef.Name, withKind)
	}
	revision := obj.Revision
	age := translateTimestampSince(obj.CreationTimestamp)