String nodeName(String podName) {
        String podUrlString = String.format("%s/api/v1/namespaces/%s/pods/%s", kubernetesMaster, namespace, podName);
        return extractNodeName(callGet(podUrlString));
    }
@Test
    public void nodeName() throws JsonProcessingException {
        // given
        String podName = "pod-name";
        stub(String.format("/api/v1/namespaces/%s/pods/%s", NAMESPACE, podName), pod("hazelcast-0", NAMESPACE, "kubernetes-node-f0bbd602-f7cw"));

        // when
        String nodeName = kubernetesClient.nodeName(podName);

        // then
        assertEquals("kubernetes-node-f0bbd602-f7cw", nodeName);
    }