}

      private List<Multiset.Entry<E>> snapshot() {
        List<Multiset.Entry<E>> list = Lists.newArrayListWithExpectedSize(size());
        // not Iterables.addAll(list, this), because that'll forward back here
        Iterators.addAll(list, iterator());
        return list;
      }

      @Override
      public boolean remove(Object object) {
        if (object instanceof Multiset.Entry) {