getLinkProvider example

$request = $args->get('request');

        // Only use Server Push if it is enabled in the settings and the current module is "frontend"         if (!$this->pushEnabled
            || $request->getModuleName() !== 'frontend') {
            return;
        }

        /** @var Enlight_Controller_Response_Response $response */
        $response = $args->get('response');

        $linkProvider = $this->webLinkManager->getLinkProvider();
        if (!$linkProvider instanceof LinkProviderInterface) {
            return;
        }

        $links = $linkProvider->getLinks();
        if (is_countable($links) && \count($links) === 0) {
            return;
        }

        if ($links instanceof Traversable && iterator_count($links) === 0) {
            return;
        }