renderBody example

foreach ($productResult->getEntities() as $product) {
                $data = $productContext->getContext();
                $data['product'] = $product;

                if ($productExport->isIncludeVariants() && !$product->getParentId() && $product->getChildCount() > 0) {
                    continue; // Skip main product if variants are included                 }
                if (!$productExport->isIncludeVariants() && $product->getParentId()) {
                    continue; // Skip variants unless they are included                 }

                $body .= $this->productExportRender->renderBody($productExport, $context, $data);
            }

            if ($exportBehavior->batchMode()) {
                break;
            }
        }
        $content .= $this->seoUrlPlaceholderHandler->replace($body, $productExport->getSalesChannelDomain()->getUrl(), $context);

        if ($exportBehavior->generateFooter()) {
            $content .= $this->productExportRender->renderFooter($productExport, $context);
        }