@Override
public void readData(ObjectDataInput in) throws IOException {
super.readData(in);
dataKey = IOUtil.readData(in);
dataNewValue = IOUtil.readNullableData(in);
dataOldValue = IOUtil.readNullableData(in);
}
@Override
public void readData(ObjectDataInput in) throws IOException {
super.readData(in);
dataKey = in.readData();
dataNewValue = in.readData();
dataOldValue = in.readData();
dataMergingValue = in.readData();
}
