if err != nil {
		return nil, fmt.Errorf("finding default GCP credentials: %w", err)
	}
	return &oauth2.Transport{
		Base:   tr,
		Source: creds.TokenSource,
	}, nil

	client := exClient.Dynamic()
	gvr := schema.GroupVersionResource{
		Group:    "hub.gke.io",
		Version:  "v1",
		Resource: "memberships",
	}
	u, err := client.Resource(gvr).Get(ctx, "membership", metav1.GetOptions{})
	if err != nil {
		return nil, err
	}
	spec, ok := u.Object["spec"].(map[string]any)
	if !ok {