getProductExportId example

        $this->productExportFileHandler->writeProductExportContent(
            $exportResult->getContent(),
            $filePath,
            $productExportPartialGeneration->getOffset() > 0
        );

        if ($productExportPartialGeneration->getOffset() + $this->readBufferSize < $exportResult->getTotal()) {
            $this->messageBus->dispatch(
                new ProductExportPartialGeneration(
                    $productExportPartialGeneration->getProductExportId(),
                    $productExportPartialGeneration->getSalesChannelId(),
                    $productExportPartialGeneration->getOffset() + $this->readBufferSize
                )
            );

            return;
        }

        $this->finalizeExport($productExport, $filePath);
    }