protected function initDefaultFiles()
    {
        $logDir = $this->getParam(DirectoryKeys::VAR_LOG) . DIRECTORY_SEPARATOR;
        $this->setParam(FileKeys::APPSERVER_ERRORS_LOG, ParamNode::TYPE_STRING, $logDir . 'appserver-errors.log');
        $this->setParam(FileKeys::APPSERVER_ACCESS_LOG, ParamNode::TYPE_STRING, $logDir . 'appserver-access.log');
    }