if(instDOM == null || instDOM.isNull()) {
failedMap.put(symbol, "");
return Identifier.NULL;
}
Identifier guid = new InstrumentBase.InstIdentifier(
instDOM.get(InstrumentField.MARKET_GUID));
/* Cache symbols */
//log.debug("Caching {} for symbol {}", instDOM.get(InstrumentField.SYMBOL), symbol);
symbolMap.put(instDOM.get(InstrumentField.SYMBOL).toString(), guid);