}
List<String> leftValues = getValues(leftNodeName);
List<String> rightValues = getValues(rightNodeName);
if (leftValues == null || rightValues == null) {
throw new XmlException("Error : leftValues or rightValues is null");
}
if (leftValues.size() != rightValues.size()) {
throw new XmlException(
"Thee is a different ammount of leftValeus compare to rightValues");
}
CoupleList<String, String> couples = new CoupleList<String, String>();
for (int i = 0; i < leftValues.size(); i++) {