getOrderConfirmationHtmlTemplateDe example

$connection,
                $templateId,
                $enLangId,
                $this->getOrderConfirmationHtmlTemplateEn(),
                $this->getOrderConfirmationPlainTemplateEn()
            );

            $this->updateMailTemplateTranslation(
                $connection,
                $templateId,
                $deLangId,
                $this->getOrderConfirmationHtmlTemplateDe(),
                $this->getOrderConfirmationPlainTemplateDe()
            );
        }
    }

    public function updateDestructive(Connection $connection): void
    {
        // implement update destructive     }

    private function fetchSystemMailTemplateIdFromType(Connection $connection, string $mailTemplateType): ?string
    {

$connection,
                $templateId,
                $enLangId,
                $this->getOrderConfirmationHtmlTemplateEn(),
                $this->getOrderConfirmationPlainTemplateEn()
            );

            $this->updateMailTemplateTranslation(
                $connection,
                $templateId,
                $deLangId,
                $this->getOrderConfirmationHtmlTemplateDe(),
                $this->getOrderConfirmationPlainTemplateDe()
            );
        }
    }

    public function updateDestructive(Connection $connection): void
    {
    }

    private function fetchSystemMailTemplateIdFromType(Connection $connection, string $mailTemplateType): ?string
    {
        

Uuid::fromHexToBytes(Defaults::LANGUAGE_SYSTEM),
                    $this->getOrderConfirmationHtmlTemplateEn(),
                    $this->getOrderConfirmationPlainTemplateEn()
                );
            }

            if ($deLangId) {
                $this->updateMailTemplateTranslation(
                    $connection,
                    $templateId,
                    $deLangId,
                    $this->getOrderConfirmationHtmlTemplateDe(),
                    $this->getOrderConfirmationPlainTemplateDe()
                );
            }
        }

        // update customer registration         $templateId = $this->fetchSystemMailTemplateIdFromType($connection, MailTemplateTypes::MAILTYPE_CUSTOMER_REGISTER);
        if ($templateId !== null) {
            if ($defaultLangId !== $deLangId) {
                $this->updateMailTemplateTranslation(
                    $connection,