getDocumentType example

$operation = new DocumentGenerateOperation(
            $document->getOrderId(),
            FileTypes::PDF,
            $document->getConfig(),
            $document->getReferencedDocumentId()
        );

        $operation->setDocumentId($document->getId());

        /** @var DocumentTypeEntity $documentType */
        $documentType = $document->getDocumentType();

        $documentStruct = $this->documentGenerator->generate(
            $documentType->getTechnicalName(),
            [$document->getOrderId() => $operation],
            $context
        )->getSuccess()->first();

        if ($documentStruct === null) {
            return null;
        }

        

$operation = new DocumentGenerateOperation(
            $document->getOrderId(),
            FileTypes::PDF,
            $document->getConfig(),
            $document->getReferencedDocumentId()
        );

        $operation->setDocumentId($documentId);

        /** @var DocumentTypeEntity $documentType */
        $documentType = $document->getDocumentType();

        $documentStruct = $this->generate(
            $documentType->getTechnicalName(),
            [$document->getOrderId() => $operation],
            $context
        )->getSuccess()->first();

        if ($documentStruct === null) {
            return $document;
        }

        

$criteria = new Criteria([$documentStruct->getId()]);
        $criteria->addAssociation('documentType');

        /** @var DocumentEntity $document */
        $document = $this->documentRepository
            ->search($criteria, $this->context)
            ->get($documentStruct->getId());

        static::assertNotNull($document);
        static::assertSame($this->orderId, $document->getOrderId());

        static::assertNotNull($document->getDocumentType());
        static::assertSame(Defaults::LIVE_VERSION, $document->getOrderVersionId());
        static::assertSame(DeliveryNoteRenderer::TYPE, $document->getDocumentType()->getTechnicalName());
        static::assertSame(FileTypes::PDF, $document->getFileType());
    }

    public function testGenerateEmpty(): void
    {
        $documentStruct = $this->documentGenerator->generate(DeliveryNoteRenderer::TYPE, [], $this->context)->getSuccess();

        static::assertCount(0, $documentStruct);