protected function decorateService($service)
    {
        $extName = DecorateExtension::EXTENSION_CLASS;

        // decorate extension loaded
        if ($this->hasExtension($extName)) {
            /* @var $ext DecorateExtension */
            $ext = $this->getExtension($extName);
            $ext->decorateService($service);
        }

        return $this;
    }