Cachearium\CacheAbstract::extraSub PHP Method

    private function extraSub(&$sub)
    {
        if (!is_callable('application_cacheDependencies')) {
            return;
        }
        $extra = application_cacheDependencies();
        if (is_array($sub)) {
            $sub['cacheExtraSubApplication'] = $extra;
        } else {
            $sub .= $extra;
        }
    }