// WaitForPodToDisappear waits for the given Pod in the kube-system namespace to be deleted
	WaitForPodToDisappear(staticPodName string) error
	// WaitForStaticPodSingleHash fetches sha256 hash for the control plane static pod
	WaitForStaticPodSingleHash(nodeName string, component string) (string, error)
	// WaitForStaticPodHashChange waits for the given static pod component's static pod hash to get updated.

		kubeadmconstants.KubeControllerManager: "",
		kubeadmconstants.KubeScheduler:         "",
	}, nil
}

// WaitForStaticPodSingleHash returns an empty hash
// but the empty strings there are needed
func (w *Waiter) WaitForStaticPodSingleHash(_ string, _ string) (string, error) {
	return "", nil
}

func (w *fakeWaiter) WaitForStaticPodControlPlaneHashes(_ string) (map[string]string, error) {
	return map[string]string{}, w.errsToReturn[waitForHashes]
}

// WaitForStaticPodSingleHash returns an error if set from errsToReturn
func (w *fakeWaiter) WaitForStaticPodSingleHash(_ string, _ string) (string, error) {
	return "", w.errsToReturn[waitForHashes]
}

// WaitForStaticPodHashChange returns an error if set from errsToReturn

		return false, errors.Errorf("the desired etcd version %q is older than the currently installed %q. Skipping etcd upgrade", desiredEtcdVersion, currentEtcdVersionStr)
	}

	beforeEtcdPodHash, err := waiter.WaitForStaticPodSingleHash(cfg.NodeRegistration.Name, constants.Etcd)
	if err != nil {
		return true, err
	}

	// Write the updated etcd static Pod manifest into the temporary directory, at this point no etcd change