code: func AddKubeadmOtherFlags(flagSet *pflag.FlagSet, rootfsPath *string) {
  	flagSet.StringVar(
  		rootfsPath, "rootfs", *rootfsPath,
  		"[EXPERIMENTAL] The path to the 'real' host root filesystem.",
  	)
  }
docs: // AddKubeadmOtherFlags adds flags that are not bound to a configuration file to the given flagset