public function loadObjectStateGroupDataByIdentifier($identifier)
{
$query = $this->createObjectStateGroupFindQuery();
$query->where($query->expr->eq($this->dbHandler->quoteColumn('identifier', 'ezcobj_state_group'), $query->bindValue($identifier, null, \PDO::PARAM_STR)));
$statement = $query->prepare();
$statement->execute();
return $statement->fetchAll(\PDO::FETCH_ASSOC);
}