client := exClient.Dynamic()
	gvr := schema.GroupVersionResource{
		Group:    "hub.gke.io",
		Version:  "v1",
		Resource: "memberships",
	}
	u, err := client.Resource(gvr).Get(ctx, "membership", metav1.GetOptions{})
	if err != nil {
		return nil, err
	}
	spec, ok := u.Object["spec"].(map[string]any)
	if !ok {
		return nil, errors.New(`field "spec" is not a map`)
	}

		cache.updatedAt = time.Now()
		return nil
	}

	gi := cache.iamGroupsMap[group]

	// Updating the group memberships cache happens in two steps:
	//
	// 1. Remove the group from each user's list of memberships.
	// 2. Add the group to each member's list of memberships.
	//
	// This ensures that regardless of members being added or
	// removed, the cache stays current.

the group can be found at [Early Disclosure Membership].

## Security Bulletins

Information about previous Istio vulnerabilities can be found on the
[Security Bulletins] page.

[Support Announcements]: https://istio.io/news/support/
[Istio Security Vulnerabilities]: https://istio.io/about/security-vulnerabilities/
[Security Bulletins]: https://istio.io/news/security/

- find accounts (user DNs) that have been removed; any active STS credentials or MinIO service accounts belonging to these users are purged.

- find accounts whose group memberships have changed; access policies available to a credential are updated to reflect the change, i.e. they will lose any privileges associated with a group they are removed from, and gain any privileges associated with a group they are added to.

     */
    public static final int NTLMSSP_NEGOTIATE_ANONYMOUS = 0x00000800;

    /**
     * Indicates whether the OEM-formatted domain name in which the
     * client workstation has membership is supplied in the Type-1 message.
     * This is used in the negotation of local authentication.
     */
    public static final int NTLMSSP_NEGOTIATE_OEM_DOMAIN_SUPPLIED = 0x00001000;

    /**

     * a member of.
     * <p/>
     * This method is designed to assist with computing access control for a
     * given user when the target object's ACL has local groups. Local groups
     * are not listed in a user's group membership (e.g. as represented by the
     * tokenGroups constructed attribute retrieved via LDAP).
     * <p/>
     * Domain groups nested inside a local group are currently not expanded. In

	if isMCP {
		// Special credentials handling when using ASM Managed Control Plane.
		mem, err := getHubMembership(ctx, kubeClient)
		if err != nil {
			return nil, fmt.Errorf("failed to query Hub membership: %w", err)
		}
		aud = []string{mem.WorkloadIdentityPool}
	}
	k8sCreds, err := kubeClient.CreatePerRPCCredentials(ctx, ns, serviceAccount, aud, defaultExpirationSeconds)
	if err != nil {

    */
    public static final int NTLMSSP_NEGOTIATE_NTLM = 0x00000200;

    /**
    * Indicates whether the OEM-formatted domain name in which the
    * client workstation has membership is supplied in the Type-1 message.
    * This is used in the negotation of local authentication. 
    */
    public static final int NTLMSSP_NEGOTIATE_OEM_DOMAIN_SUPPLIED =
            0x00001000;

    /**

pkg syscall (linux-386-cgo), const IP_DROP_MEMBERSHIP = 36
pkg syscall (linux-386-cgo), const IP_DROP_SOURCE_MEMBERSHIP = 40
pkg syscall (linux-386-cgo), const IP_FREEBIND = 15
pkg syscall (linux-386-cgo), const IP_HDRINCL = 3
pkg syscall (linux-386-cgo), const IP_IPSEC_POLICY = 16
pkg syscall (linux-386-cgo), const IP_MAXPACKET = 65535
pkg syscall (linux-386-cgo), const IP_MAX_MEMBERSHIPS = 20

			gSet := set.CreateStringSet(cred.Groups...)
			if gSet.Equals(currGroupsSet) {
				// No change to groups memberships for this
				// credential.
				continue
			}

			// Expired credentials don't need group membership updates.
			if cred.IsExpired() {
				continue
			}

			cred.Groups = currGroups