public function sendShopownerConfirmation(
        $recipient,
        ApiOrderInterface $apiOrder,
        ContactInterface $customerContact = null
    ) {
        if (!$this->sendEmailConfirmationToShopowner) {
            return false;
        }

        if (empty($recipient)) {
            // fallback address for shop-owner order confirmations
            $recipient = $this->confirmationRecipientEmailAddress;
        }

        return $this->sendConfirmationEmail(
            $recipient,
            $apiOrder,
            $this->templateShopownerConfirmationPath,
            $customerContact
        );
    }