* Defines the search filter used to locate groups in LDAP.
     */
    @Size(max = 1000)
    public String ldapGroupFilter;

    /**
     * LDAP attribute name for group membership.
     * Specifies which LDAP attribute contains group membership information.
     */
    @Size(max = 100)
    public String ldapMemberofAttribute;

    /**
     * Notification message displayed on the login page.

    }

    /**
     * Updates the user's group and role membership information with lazy loading for parent groups.
     * Direct groups are retrieved synchronously, while parent groups are fetched asynchronously
     * to avoid login delays when users have many nested group memberships.
     * @param user The Entra ID user to update.
     */
    public void updateMemberOf(final EntraIdUser user) {

     */
    public static class EntraIdUser implements FessUser {
        private static final long serialVersionUID = 1L;

        /** User's group memberships. */
        protected volatile String[] groups;

        /** User's role assignments. */
        protected volatile String[] roles;

        /** User's computed permissions. */