.put("five", 5)
            .build();
    assertMapEquals(map, "five", 5, "four", 4, "one", 1, "three", 3, "two", 2);
  }

  @SuppressWarnings("DoNotCall")
  public void testBuilder_orderEntriesByValueFails() {
    ImmutableSortedMap.Builder<String, Integer> builder = ImmutableSortedMap.naturalOrder();
    assertThrows(
        UnsupportedOperationException.class, () -> builder.orderEntriesByValue(Ordering.natural()));