public function getCacheInstance()
    {
        if (null === $this->cacheInstance) {
            $this->cacheInstance = $this->cacheManager->getCache(self::CACHE_IDENTIFIER);
        }

        return $this->cacheInstance;
    }
public function getCacheInstance()
    {
        if (null === $this->cacheInstance) {
            $this->cacheInstance = $this->cacheManager->getCache(self::CACHE_IDENTIFIER);
        }

        return $this->cacheInstance;
    }
public function getCacheInstance ( ) { if ( null === $ this -> cacheInstance ) { $ this -> cacheInstance = $ this -> cacheManager -> getCache ( self :: CACHE_IDENTIFIER ) ; } return $ this -> cacheInstance ; }
Returns the cache instance used by this extension.

@return FrontendInterface
Returns the cache instance used by this extension .