.createKeyArray(length);
    }

    @Override
    public Iterable<K> order(List<K> insertionOrder) {
      Iterator<V> valueIter = sampleValuesIterator();
      List<Entry<K, V>> entries = new ArrayList<>();
      for (K k : insertionOrder) {
        entries.add(mapEntry(k, valueIter.next()));
      }
      Iterable<Entry<K, V>> ordered = multimapGenerator.order(entries);
      List<K> orderedValues = new ArrayList<>();

          .createKeyArray(length);
    }

    @Override
    public Iterable<K> order(List<K> insertionOrder) {
      Iterator<V> valueIter = sampleValuesIterator();
      List<Entry<K, V>> entries = new ArrayList<>();
      for (K k : insertionOrder) {
        entries.add(mapEntry(k, valueIter.next()));
      }
      Iterable<Entry<K, V>> ordered = multimapGenerator.order(entries);
      List<K> orderedValues = new ArrayList<>();

      Builder<K, V> builder = makeBuilder(keySet.size());

      UnmodifiableIterator<K> keyIter = keySet.iterator();
      UnmodifiableIterator<V> valueIter = values.iterator();

      while (keyIter.hasNext()) {
        builder.put(keyIter.next(), valueIter.next());
      }

      return builder.buildOrThrow();
    }

    @SuppressWarnings("unchecked")
    final Object legacyReadResolve() {

      Builder<K, V> builder = makeBuilder(keySet.size());

      UnmodifiableIterator<K> keyIter = keySet.iterator();
      UnmodifiableIterator<V> valueIter = values.iterator();

      while (keyIter.hasNext()) {
        builder.put(keyIter.next(), valueIter.next());
      }

      return builder.buildOrThrow();
    }

    @SuppressWarnings("unchecked")
    final Object legacyReadResolve() {