generateHeader example

            $this->eventDispatcher->dispatch($loggingEvent);

            $this->translator->resetInjection();
            $this->connection->delete('sales_channel_api_context', ['token' => $contextToken]);

            throw $exception;
        }

        $content = '';
        if ($exportBehavior->generateHeader()) {
            $content = $this->productExportRender->renderHeader($productExport, $context);
        }

        $productContext = $this->eventDispatcher->dispatch(
            new ProductExportRenderBodyContextEvent(
                [
                    'productExport' => $productExport,
                    'context' => $context,
                ]
            )
        );