public function getChildren($locationId)
{
$query = $this->handler->createSelectQuery();
$query->select('*')->from($this->handler->quoteTable('ezcontentobject_tree'))->where($query->expr->eq($this->handler->quoteColumn('parent_node_id', 'ezcontentobject_tree'), $query->bindValue($locationId, null, \PDO::PARAM_INT)));
$statement = $query->prepare();
$statement->execute();
return $statement->fetchAll(\PDO::FETCH_ASSOC);
}