cmd.Flags().BoolVarP(&all, "all", "", all, "Produce all supported collateral files")
	cmd.Flags().BoolVarP(&c.EmitMarkdown, "markdown", "", c.EmitMarkdown, "Produce markdown documentation files")
	cmd.Flags().BoolVarP(&c.EmitManPages, "man", "", c.EmitManPages, "Produce man pages")
	cmd.Flags().BoolVarP(&c.EmitBashCompletion, "bash", "", c.EmitBashCompletion, "Produce bash completion files")

	renameResources string
}

func addManifestDiffFlags(cmd *cobra.Command, diffArgs *manifestDiffArgs) {
	cmd.PersistentFlags().BoolVarP(&diffArgs.compareDir, "directory", "r",
		false, "Compare directory.")
	cmd.PersistentFlags().BoolVarP(&diffArgs.verbose, "verbose", "v",
		false, "Verbose output.")
	cmd.PersistentFlags().StringVar(&diffArgs.selectResources, "select", "::",

type RootArgs struct {
	// DryRun performs all steps except actually applying the manifests or creating output dirs/files.
	DryRun bool
}

func addFlags(cmd *cobra.Command, rootArgs *RootArgs) {
	cmd.PersistentFlags().BoolVarP(&rootArgs.DryRun, "dry-run", "",
		false, "Console/log output only, make no changes.")
}

// GetRootCmd returns the root of the cobra command-tree.
func GetRootCmd(ctx cli.Context, args []string) *cobra.Command {

	revision string
	// purge if set to true, all revisions of Istio operator will be specified.
	purge bool
}

func addOperatorRemoveFlags(cmd *cobra.Command, oiArgs *operatorRemoveArgs) {
	cmd.PersistentFlags().BoolVarP(&oiArgs.skipConfirmation, "skip-confirmation", "y", false, skipConfirmationFlagHelpStr)
	cmd.PersistentFlags().BoolVar(&oiArgs.force, "force", false, ForceFlagHelpStr)