/** * Get payment extension attributes * @param InfoInterface $payment * @return OrderPaymentExtensionInterface */ private function getExtensionAttributes(InfoInterface $payment) { $extensionAttributes = $payment->getExtensionAttributes(); if (null === $extensionAttributes) { $extensionAttributes = $this->paymentExtensionFactory->create(); $payment->setExtensionAttributes($extensionAttributes); } return $extensionAttributes; }