Method headMultiset

output/java_guava/1.4.16/TreeMultiset.java:505–511

(@Nullable E upperBound, BoundType boundType)

  }

  @Override
  public SortedMultiset<E> headMultiset(@Nullable E upperBound, BoundType boundType) {
    return new TreeMultiset<E>(
      rootReference,
      range.intersect(GeneralRange.upTo(comparator(), upperBound, boundType)),
      header);
  }

  @Override
  public SortedMultiset<E> tailMultiset(@Nullable E lowerBound, BoundType boundType) {