public function prepend(ContainerBuilder $container)
{
// Default settings for FOSHttpCacheBundle
$configFile = __DIR__ . '/../Resources/config/fos_http_cache.yml';
$config = Yaml::parse(file_get_contents($configFile));
$container->prependExtensionConfig('fos_http_cache', $config);
$container->addResource(new FileResource($configFile));
}