getAttachment example

MailSendSubscriberConfig $extensions,
        array $eventConfig,
        ?string $orderId
    ): array {
        $attachments = [];

        foreach ($mailTemplate->getMedia() ?? [] as $mailTemplateMedia) {
            if ($mailTemplateMedia->getMedia() === null || $mailTemplateMedia->getLanguageId() !== $context->getLanguageId()) {
                continue;
            }

            $attachments[] = $this->mediaService->getAttachment(
                $mailTemplateMedia->getMedia(),
                $context
            );
        }

        $documentIds = $extensions->getDocumentIds();

        if (!empty($eventConfig['documentTypeIds']) && \is_array($eventConfig['documentTypeIds']) && $orderId) {
            $latestDocuments = $this->getLatestDocumentsOfTypes($orderId, $eventConfig['documentTypeIds']);

            $documentIds = array_unique(array_merge($documentIds, $latestDocuments));
        }