subjectReader = $subjectReader; } /** * @inheritdoc */ public function build(array $buildSubject): array { $paymentDO = $this->subjectReader->readPayment($buildSubject); $order = $paymentDO->getOrder(); return [ 'transactionRequest' => [ 'order' => [ 'invoiceNumber' => $order->getOrderIncrementId() ] ] ]; } }