derivedFeatures.add(size);
      }
    }
    return derivedFeatures;
  }

  private static class ReserializedMapGenerator<K, V> implements TestMapGenerator<K, V> {
    private final OneSizeTestContainerGenerator<Map<K, V>, Entry<K, V>> mapGenerator;

    public ReserializedMapGenerator(
        OneSizeTestContainerGenerator<Map<K, V>, Entry<K, V>> mapGenerator) {
      this.mapGenerator = mapGenerator;
    }