/** * Save cache * * @param array $tags * @return Mage_Core_Model_Design_Config */ public function saveCache($tags = null) { if ($this->_canUseCache()) { $tags = is_array($tags) ? $tags : array(); if (!in_array(Mage_Core_Model_Config::CACHE_TAG, $tags)) { $tags[] = Mage_Core_Model_Config::CACHE_TAG; } parent::saveCache($tags); } return $this; }