assertThrows(IllegalArgumentException.class, () -> zis.combine(zat).build());
  }

  // BiMap-specific tests

  @SuppressWarnings("DoNotCall")
  public void testForcePut() {
    BiMap<String, Integer> bimap = ImmutableBiMap.copyOf(ImmutableMap.of("one", 1, "two", 2));
    assertThrows(UnsupportedOperationException.class, () -> bimap.forcePut("three", 3));
  }

            .put("four", 4)
            .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(

    ImmutableSortedSet<LegacyComparable> set = builder.build();
    assertTrue(elementsEqual(LegacyComparable.VALUES_BACKWARD, set));
  }

  @SuppressWarnings({"deprecation", "static-access", "DoNotCall"})
  public void testBuilderMethod() {
    assertThrows(UnsupportedOperationException.class, () -> ImmutableSortedSet.builder());
  }

  public void testAsList() {