) ([]string, cobra.ShellCompDirective) {
		return completion.ValidNamespaceArgs(cmd, ctx, args, toComplete)
	})
	_ = rootCmd.RegisterFlagCompletionFunc(cli.FlagNamespace, func(
		cmd *cobra.Command, args []string, toComplete string,
	) ([]string, cobra.ShellCompDirective) {
		return completion.ValidNamespaceArgs(cmd, ctx, args, toComplete)
	})

	// Attach the Istio logging options to the command.