protected function _fetch_record(&$resultSet)
    {
        if (!is_array($resultSet)) {
            return null;
        }
        $sqlArr = current($resultSet);
        if ($sqlArr) {
            $this->currentRecord = $this->bizRecord->convertSqlArrToRecArr($sqlArr);
            $this->currentRecord = $this->bizRecord->getRecordArr($sqlArr);
            $this->recordId = $this->currentRecord["Id"];
            next($resultSet);
        } else {
            return null;
        }
        return $this->currentRecord;
    }