How to use

LinkedImmutableMap

in

com.oracle.truffle.object

  final LinkedEntry<K, V> nextEntry() {
    LinkedEntry<K, V> e = next;
    if (e == null) {
      throw new NoSuchElementException();
    }
    K nextKey = forward ? e.getNextKey() : e.getPrevKey();
    next = nextKey == null ? null : map.getEntry(nextKey);
    return e;
  }
}

  final LinkedEntry<K, V> nextEntry() {
    LinkedEntry<K, V> e = next;
    if (e == null) {
      throw new NoSuchElementException();
    }
    K nextKey = forward ? e.getNextKey() : e.getPrevKey();
    next = nextKey == null ? null : map.getEntry(nextKey);
    return e;
  }
}