- Kubeadm: during 'upgrade apply', if the kube-proxy ConfigMap is missing, assume that kube-proxy should not be upgraded. Same applies to a missing kube-dns/coredns ConfigMap for the DNS server addon. Note that this is a temporary workaround until 'upgrade apply' supports phases. Once phases are supported the kube-proxy/dns upgrade should be skipped manually. ([#89593](https://github.com/kubernetes/kubernetes/pull/89593), ...

     */
    String getOnlineHelpNameBackup();

    /**
     * Get the value for the key 'online.help.name.upgrade'. <br>
     * The value is, e.g. upgrade <br>
     * comment: Online help key for upgrade.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getOnlineHelpNameUpgrade();

    /**