boolean matchY = false;
boolean matchNil = false;
while (unpackerItty.hasNext()) {
final Value v = (Value) unpackerItty.next();
if (v.isRawValue() && v.asRawValue().getString().equals("x")) {
matchX = true;
}
if (v.isRawValue() && v.asRawValue().getString().equals("y")) {
matchY = true;