MapEntrySetTester.getIteratorSetValueAndRemove())
            .createTestSuite());
    // TODO(lowasser): add forwarding-to-ImmutableSortedMap test
    return suite;
  }

  public void testStandardLastEntry() {
    NavigableMap<String, Integer> forwarding =
        new StandardLastEntryForwardingNavigableMap<>(new SafeTreeMap<String, Integer>());
    assertThat(forwarding.lastEntry()).isNull();
    forwarding.put("b", 2);