user/group.go
func LookupGroup(name string) (*Group, error) {
	entries, err := LookupInGroup(G_NAME, name, 1)
	if err != nil {
		return nil, err
	}

	return entries[0], err
}
func LookupGroup(name string) (*Group, error) {
	entries, err := LookupInGroup(G_NAME, name, 1)
	if err != nil {
		return nil, err
	}

	return entries[0], err
}
// LookupGroup looks up a group by name.