assertEquals(unfiltered.pollFirst(), filtered.pollFirst());
        assertEquals(unfiltered, filtered);
      }
    }

    public void testPollLast() {
      for (List<Integer> contents : SAMPLE_INPUTS) {
        NavigableSet<Integer> filtered = filter(createUnfiltered(contents), EVEN);
        NavigableSet<Integer> unfiltered = createUnfiltered(filtered);

  public void testLast() {
    assertEquals(c, sortedMultiset.lastEntry());
  }

  @CollectionFeature.Require(SUPPORTS_REMOVE)
  @CollectionSize.Require(SEVERAL)
  public void testPollLast() {
    assertEquals(c, sortedMultiset.pollLastEntry());
    assertEquals(asList(a, b), copyToList(sortedMultiset.entrySet()));
  }

  @CollectionFeature.Require(absent = SUPPORTS_REMOVE)

  public void testLast() {
    assertEquals(c, sortedMultiset.lastEntry());
  }

  @CollectionFeature.Require(SUPPORTS_REMOVE)
  @CollectionSize.Require(SEVERAL)
  public void testPollLast() {
    assertEquals(c, sortedMultiset.pollLastEntry());
    assertEquals(asList(a, b), copyToList(sortedMultiset.entrySet()));
  }

  @CollectionFeature.Require(absent = SUPPORTS_REMOVE)