/**
* Renders the object to array
*
* @param array $arrAttributes Attribute array
* @return array
*/
public function toArray(array $arrAttributes = array())
{
$data = parent::toArray($arrAttributes);
if ($stock = $this->getStockItem()) {
$data['stock_item'] = $stock->toArray();
}
unset($data['stock_item']['product']);
return $data;
}