func (fi headerFileInfo) Sys() any           { return fi.h }

// Name returns the base name of the file.
func (fi headerFileInfo) Name() string {
	if fi.IsDir() {
		return path.Base(path.Clean(fi.h.Name))
	}
	return path.Base(fi.h.Name)
}

// Mode returns the permission and mode bits for the headerFileInfo.
func (fi headerFileInfo) Mode() (mode fs.FileMode) {
	// Set file permission bits.