if e != nil {
			return "", e
		}
		if l <= n {
			return UTF16ToString(b[:l]), nil
		}
		n = l
	}
}

// IsMember reports whether the access token t is a member of the provided SID.
func (t Token) IsMember(sid *SID) (bool, error) {
	var b int32
	if e := checkTokenMembership(t, sid, &b); e != nil {
		return false, e
	}
	return b != 0, nil
}