public function getAdminMembers($force = false) : CNabuUserGroupMemberList
    {
        $this->getMembers($force);
        $nb_admin_list = new CNabuUserGroupMemberList();

        $this->nb_user_group_member_list->iterate(
            function($key, CNabuUserGroupMember $nb_user_group_member) use ($nb_admin_list)
            {
                if ($nb_user_group_member->getAdmin() === 'T' && $nb_user_group_member->getStatus() === 'E') {
                    $nb_admin_list->addItem($nb_user_group_member);
                }
                return true;
            }
        );

        return $nb_admin_list;
    }