/**
* {@inheritDoc}
*/
public function changeAmount($delta)
{
$this->__initializer__ && $this->__initializer__->__invoke($this, 'changeAmount', array($delta));
return parent::changeAmount($delta);
}
/**
* Increase / decrease product inventory amount
*
* @param integer $delta Amount delta
*
* @return void
*/
public function changeAmount($delta)
{
if (!$this->getProduct() || !$this->getProduct()->hasManualPinCodes()) {
parent::changeAmount($delta);
}
}
