}

  AbstractSortedMultiset(Comparator<? super E> comparator) {
    this.comparator = checkNotNull(comparator);
  }

  @Override
  public NavigableSet<E> elementSet() {
    return (NavigableSet<E>) super.elementSet();
  }

  @Override
  NavigableSet<E> createElementSet() {
    return new SortedMultisets.NavigableElementSet<>(this);
  }

  @Override

    this.comparator = checkNotNull(comparator);
  }

  @Override
  public SortedSet<E> elementSet() {
    return (SortedSet<E>) super.elementSet();
  }

  @Override
  SortedSet<E> createElementSet() {
    return new SortedMultisets.ElementSet<E>(this);
  }

  @Override
  public Comparator<? super E> comparator() {
    return comparator;
  }

  @Override

  }

  AbstractSortedMultiset(Comparator<? super E> comparator) {
    this.comparator = checkNotNull(comparator);
  }

  @Override
  public NavigableSet<E> elementSet() {
    return (NavigableSet<E>) super.elementSet();
  }

  @Override
  NavigableSet<E> createElementSet() {
    return new SortedMultisets.NavigableElementSet<>(this);
  }

  @Override