/**
* Convert object to array
*
* @param array $arrAttributes
* @return array
*/
public function toArray(array $arrAttributes = [])
{
$arr = parent::toArray($arrAttributes);
$arr['rates'] = $this->getShippingRatesCollection()->toArray($arrAttributes);
$arr['items'] = $this->getItemsCollection()->toArray($arrAttributes);
foreach ($this->getTotals() as $k => $total) {
$arr['totals'][$k] = $total->toArray();
}
return $arr;
}