public function cleanBuilds($projectRoot, $maxAge = null, $keepMax = 10, $includeActive = false, $quiet = true)
    {
        // Find all the potentially active symlinks, which might be www itself
        // or symlinks inside www. This is so we can avoid deleting the active
        // build(s).
        $blacklist = [];
        if (!$includeActive) {
            $blacklist = $this->getActiveBuilds($projectRoot);
        }

        return $this->cleanDirectory(
            $projectRoot . '/' . $this->config->get('local.build_dir'),
            $maxAge,
            $keepMax,
            $blacklist,
            $quiet
        );
    }