Twig_Environment::getCacheFilename PHP Method

    public function getCacheFilename($name)
    {
        return $this->getCache() ? $this->getCache().'/'.$this->getTemplateClass($name).'.php' : false;
    }

 public function addTemplate($path)
 {
     $this->environment->loadTemplate($path);
     $this->templates[] = $this->environment->getCacheFilename($path);
 }