Payu\Validator\Validator\OrderValidator::validate PHP Method

    public function validate()
    {
        parent::validate();
        /**
         * @var $object \Payu\Component\Order
         */
        $object = $this->request->getOrder();
        // Get currency from order instance
        try {
            static::filterAndValidateCurrencyCode($object->getCurrency());
        } catch (\Exception $e) {
            throw new ValidationError($e->getMessage());
        }
    }