// TODO(roberthbailey): Can we do this without having credentials to talk to
	// the cloud provider?
	// TODO(justinsb): We can if CurrentNodeName() was actually CurrentNode() and
	// returned an interface.
	// TODO: If IP addresses couldn't be fetched from the cloud provider, should
	// kubelet fallback on the other methods for getting the IP below?
	instances, ok := m.cloud.Instances()

    }

    protected
    fun getCodec() = currentCodec

    private
    val contexts = ArrayList<Pair<T?, Codec<Any?>>>()

    override fun push(codec: Codec<Any?>) {
        contexts.add(0, Pair(currentIsolate, currentCodec))
        currentCodec = codec
    }

    override fun push(owner: IsolateOwner) {
        push(owner, currentCodec)
    }

	require.Equal(t, currentStorageRV, rsRV, "expected the global etcd RV to be equal to replicaset's RV")

	// ensure that the pod's RV hasn't been changed
	currentPod := getPod(pod.Name, pod.Namespace)
	currentPodRV, err := versioner.ParseResourceVersion(currentPod.ResourceVersion)
	require.NoError(t, err)
	require.Equal(t, currentPodRV, podRV, "didn't expect to see the pod's RV changed")
}