private EventID getNearSideEventId(TXState txState) {
    assert nearSideEventOffset != -1;
    return createEventID(txState, nearSideEventOffset);
  }
Calculate (if farside has not already done so) and return then eventID to use for near side op
applications.

@since GemFire 5.7
geode-core/src/main/java/org/apache/geode/internal/cache/TXEntryState.java