protected function isAPCUSupported()
    {
        static $apcuSupported = null;
        if (null === $apcuSupported) {
            // Need to check for CLI because Symfony won't: https://github.com/symfony/symfony/pull/25080
            $apcuSupported = Director::is_cli() ? ini_get('apc.enable_cli') && ApcuAdapter::isSupported() : ApcuAdapter::isSupported();
        }
        return $apcuSupported;
    }