}
	if len(o.Kustomize) > 0 && o.Recursive {
		errs = append(errs, fmt.Errorf("the -k flag can't be used with -f or -R"))
	}
	return errs
}

func (o *FilenameOptions) RequireFilenameOrKustomize() error {
	if len(o.Filenames) == 0 && len(o.Kustomize) == 0 {
		return fmt.Errorf("must specify one of -f and -k")
	}
	return nil
}

type resourceTuple struct {
	Resource string