Set<Feature<?>> result = computeDerivedCollectionFeatures(multimapFeatures);
    if (multimapFeatures.contains(MapFeature.ALLOWS_NULL_ENTRY_QUERIES)) {
      result.add(CollectionFeature.ALLOWS_NULL_QUERIES);
    }
    return result;
  }

  static Set<Feature<?>> computeValuesFeatures(Set<Feature<?>> multimapFeatures) {
    Set<Feature<?>> result = computeDerivedCollectionFeatures(multimapFeatures);