internalFieldPath, _, err := podshelper.ConvertDownwardAPIFieldLabel(fs.APIVersion, fs.FieldPath, "")
	if err != nil {
		return "", err
	}

	// make podIPs order match node IP family preference #97979
	podIPs = kl.sortPodIPs(podIPs)
	if len(podIPs) > 0 {
		podIP = podIPs[0]
	}

	switch internalFieldPath {
	case "spec.nodeName":
		return pod.Spec.NodeName, nil
	case "spec.serviceAccountName":

			defer testKubelet.Cleanup()
			kl := testKubelet.kubelet
			if tc.nodeIP != "" {
				kl.nodeIPs = []net.IP{netutils.ParseIPSloppy(tc.nodeIP)}
			}

			podIPs := kl.sortPodIPs(tc.podIPs)
			if !reflect.DeepEqual(podIPs, tc.expectedIPs) {
				t.Fatalf("Expected PodIPs %#v, got %#v", tc.expectedIPs, podIPs)
			}
		})
	}
}

// func init() {