/**
* Returns lazy loaded field by its name
*
* @param string $fieldName
* @return mixed
*/
public function getComputed($fieldName)
{
if (!isset($this->computed[$fieldName])) {
$value = $this->mapper->lazyload($this, $fieldName);
$this->computed[$fieldName] = $value;
}
return $this->computed[$fieldName];
}