code: func LookupGShadow(name string) (*GShadow, error) {
  	entries, err := LookupInGShadow(GS_NAME, name, 1)
  	if err != nil {
  		return nil, err
  	}
  
  	return entries[0], err
  }
docs: // LookupGShadow looks up a shadowed group by name.