*
     * @return the GID of the serialized object
     * @see PBXObject#serializeInto
     */
    private String serializeObject(PBXObject obj) {
        if (obj.getGlobalID() == null) {
            obj.setGlobalID(obj.generateGid(gidGenerator));
            LOG.trace("Set new object GID: {}", obj);
        } else {
            // Check that the object has already been serialized.

}

// Chown changes the numeric uid and gid of the named file.
// If the file is a symbolic link, it changes the uid and gid of the link's target.
// A uid or gid of -1 means to not change that value.
// If there is an error, it will be of type [*PathError].
//
// On Windows or Plan 9, Chown always returns the [syscall.EWINDOWS] or
// EPLAN9 error, wrapped in *PathError.
func Chown(name string, uid, gid int) error {

}

// userMap and groupMap caches UID and GID lookups for performance reasons.
// The downside is that renaming uname or gname by the OS never takes effect.
var userMap, groupMap sync.Map // map[int]string

func statUnix(fi fs.FileInfo, h *Header, doNameLookups bool) error {
	sys, ok := fi.Sys().(*syscall.Stat_t)
	if !ok {
		return nil
	}
	h.Uid = int(sys.Uid)
	h.Gid = int(sys.Gid)
	if doNameLookups {

iptables -t raw -D ISTIO_OUTPUT -p udp --dport 53 -m owner --gid-owner 1337 -j CT --zone 1
ip6tables -t raw -D ISTIO_OUTPUT -p udp --dport 53 -m owner --gid-owner 1337 -j CT --zone 1
iptables -t raw -D ISTIO_OUTPUT -p udp --sport 15053 -m owner --gid-owner 1337 -j CT --zone 2
ip6tables -t raw -D ISTIO_OUTPUT -p udp --sport 15053 -m owner --gid-owner 1337 -j CT --zone 2
iptables-save

iptables -t nat -A ISTIO_OUTPUT -o lo ! -d 127.0.0.1/32 -p tcp ! --dport 15008 -m owner --gid-owner 1337 -j ISTIO_IN_REDIRECT
iptables -t nat -A ISTIO_OUTPUT -o lo -m owner ! --gid-owner 1337 -j RETURN
iptables -t nat -A ISTIO_OUTPUT -m owner --gid-owner 1337 -j RETURN
iptables -t nat -A ISTIO_OUTPUT -m owner --gid-owner 888 -j RETURN
iptables -t nat -A ISTIO_OUTPUT -m owner --gid-owner ftp -j RETURN
iptables -t nat -A ISTIO_OUTPUT -d 127.0.0.1/32 -j RETURN

		return nil, fmt.Errorf("user: lookup groupname %s: %v", groupname, err)
	}
	return buildGroup(&grp), nil
}

func lookupGroupId(gid string) (*Group, error) {
	i, e := strconv.Atoi(gid)
	if e != nil {
		return nil, e
	}
	return lookupUnixGid(i)
}

func lookupUnixGid(gid int) (*Group, error) {
	var grp _C_struct_group
	var found bool

	err := retryWithBuffer(groupBuffer, func(buf []byte) syscall.Errno {

public abstract class PBXObject {
    @Nullable
    private String globalID;

    @Nullable
    public String getGlobalID() {
        return globalID;
    }

    public void setGlobalID(String gid) {
        globalID = gid;
    }

    /**
     * @return Type name of the serialized object.
     */
    public abstract String isa();

    /**
     * Populates the serializer with the fields of this object.
     */

iptables -t nat -A ISTIO_OUTPUT -m owner --uid-owner 1337 -j RETURN
iptables -t nat -A ISTIO_OUTPUT -o lo ! -d 127.0.0.1/32 -p tcp ! --dport 15008 -m owner --gid-owner 1337 -j ISTIO_IN_REDIRECT
iptables -t nat -A ISTIO_OUTPUT -o lo -m owner ! --gid-owner 1337 -j RETURN
iptables -t nat -A ISTIO_OUTPUT -m owner --gid-owner 1337 -j RETURN
iptables -t nat -A ISTIO_OUTPUT -d 127.0.0.1/32 -j RETURN
ip6tables -t nat -N ISTIO_INBOUND
ip6tables -t nat -N ISTIO_REDIRECT

iptables -t nat -A ISTIO_OUTPUT -m owner --uid-owner 1337 -j RETURN
iptables -t nat -A ISTIO_OUTPUT -o lo ! -d 127.0.0.1/32 -p tcp ! --dport 15008 -m owner --gid-owner 1337 -j ISTIO_IN_REDIRECT
iptables -t nat -A ISTIO_OUTPUT -o lo -p tcp ! --dport 53 -m owner ! --gid-owner 1337 -j RETURN
iptables -t nat -A ISTIO_OUTPUT -m owner --gid-owner 1337 -j RETURN
iptables -t nat -A ISTIO_OUTPUT -p tcp --dport 53 -d 127.0.0.53/32 -j REDIRECT --to-ports 15053

	// On Plan 9, this is the contents of /dev/user.
	Uid string
	// Gid is the primary group ID.
	// On POSIX systems, this is a decimal number representing the gid.
	// On Windows, this is a SID in a string format.
	// On Plan 9, this is the contents of /dev/user.
	Gid string
	// Username is the login name.
	Username string
	// Name is the user's real or display name.
	// It might be blank.