private final ImmutableList<Type> lowerBounds;
    private final ImmutableList<Type> upperBounds;

    WildcardTypeImpl(Type[] lowerBounds, Type[] upperBounds) {
      disallowPrimitiveType(lowerBounds, "lower bound for wildcard");
      disallowPrimitiveType(upperBounds, "upper bound for wildcard");
      this.lowerBounds = JavaVersion.CURRENT.usedInGenericType(lowerBounds);

    private final ImmutableList<Type> lowerBounds;
    private final ImmutableList<Type> upperBounds;

    WildcardTypeImpl(Type[] lowerBounds, Type[] upperBounds) {
      disallowPrimitiveType(lowerBounds, "lower bound for wildcard");
      disallowPrimitiveType(upperBounds, "upper bound for wildcard");
      this.lowerBounds = JavaVersion.CURRENT.usedInGenericType(lowerBounds);

        header);
  }

  @Override
  public SortedMultiset<E> tailMultiset(@ParametricNullness E lowerBound, BoundType boundType) {
    return new TreeMultiset<>(
        rootReference,
        range.intersect(GeneralRange.downTo(comparator(), lowerBound, boundType)),
        header);
  }

  private static final class Reference<T> {
    private @Nullable T value;

        header);
  }

  @Override
  public SortedMultiset<E> tailMultiset(@ParametricNullness E lowerBound, BoundType boundType) {
    return new TreeMultiset<>(
        rootReference,
        range.intersect(GeneralRange.downTo(comparator(), lowerBound, boundType)),
        header);
  }

  private static final class Reference<T> {
    private @Nullable T value;

    NavigableMap<Cut<Integer>, Range<Integer>> expectedRangesByLowerBound = Maps.newTreeMap();
    for (Range<Integer> range : expectedRanges) {
      expectedRangesByLowerBound.put(range.lowerBound, range);
    }

    NavigableMap<Cut<Integer>, Range<Integer>> rangesByLowerBound = rangeSet.rangesByLowerBound;
    testNavigationAgainstExpected(expectedRangesByLowerBound, rangesByLowerBound, CUTS_TO_TEST);
  }