// Different serializer object is used for WF. It seems to perform better
if (System.getProperty("WF_SERIALIZER") != null) {
produceXCASRequestFrame(aCasList[i], dataFrame, keys2Drop);
} else {
vinciCasDataConverter.casDataToVinciFrame(aCasList[i], dataFrame);
dropNamedTypes(dataFrame.fgetAFrame("KEYS"), keys2Drop);
}
totalSerializeTime += (uimaTimer.getTimeInMillis() - sTime);
query.fadd(Constants.DATA, dataFrame);
}