public function init()
{
self::$roles = array(self::ROLE_ADMIN => tt('RoleAdmin', 'users'), self::ROLE_MODERATOR => tt('RoleModerator', 'users'), self::ROLE_REGISTERED => tt('RoleRegistered', 'users'));
self::$createUserWithoutRolesAdmin = self::$createUserWithoutRolesModeration = self::$roles;
unset(self::$createUserWithoutRolesAdmin['admin']);
unset(self::$createUserWithoutRolesModeration['admin'], self::$createUserWithoutRolesModeration['moderator']);
parent::init();
}