user/id.go
func NextSystemGID() (int, error) {
	db, gid, err := nextGUID(true)
	db.close()
	return gid, err
}
func NextSystemGID() (int, error) {
	db, gid, err := nextGUID(true)
	db.close()
	return gid, err
}
func NextSystemGID ( ) ( int , error ) { db , gid , err := nextGUID ( true ) db . close ( ) return gid , err }
// NextSystemGID returns the next free system group id to use.
NextSystemGID returns the next free system group id to use .