manager-bundle/src/HttpKernel/ContaoKernel.php
public function getHttpCache()
    {
        if (null !== $this->httpCache) {
            return $this->httpCache;
        }

        return $this->httpCache = new ContaoCache($this, $this->getProjectDir().'/var/cache/prod/http_cache');
    }
public function getHttpCache()
    {
        if (null !== $this->httpCache) {
            return $this->httpCache;
        }

        return $this->httpCache = new ContaoCache($this, $this->getProjectDir().'/var/cache/prod/http_cache');
    }
{@inheritdoc}