updateMailTemplateType example

$mailTemplate,
            $extension,
            $eventConfig,
            $flow->getData(OrderAware::ORDER_ID),
        ));

        $this->setReplyTo($data, $eventConfig, $flow->getData(FlowMailVariables::CONTACT_FORM_DATA, []));

        $this->eventDispatcher->dispatch(new FlowSendMailActionEvent($data, $mailTemplate, $flow));

        if ($data->has('templateId')) {
            $this->updateMailTemplateType(
                $flow->getContext(),
                $flow,
                $flow->data(),
                $mailTemplate
            );
        }

        $templateData = [
            'eventName' => $flow->getName(),
            ...$flow->data(),
        ];