/**
  * Validate currency of a price
  *
  * @param AttributeInterface|MetricInterface|ProductValueInterface $object
  * @param Constraint                                               $constraint
  */
 public function validate($object, Constraint $constraint)
 {
     if ($object instanceof ProductPriceInterface) {
         if (!in_array($object->getCurrency(), $this->getCurrencyCodes())) {
             $this->context->addViolationAt('currency', $constraint->unitMessage);
         }
     }
 }