public function findBySql($sql, $parameters = array())
{
$args = func_num_args() > 1 ? array_slice(func_get_args(), 1) : null;
$criteria = $this->getRecordCriteria($sql, $parameters, $args);
$criteria->setLimit(1);
$data = $this->getRecordGateway()->findRecordBySql($this, $criteria);
return $this->populateObject($data);
}