* supportsRemove}.
   */
  protected MapInterfaceTest(
      boolean allowsNullKeys,
      boolean allowsNullValues,
      boolean supportsPut,
      boolean supportsRemove,
      boolean supportsClear) {
    this(
        allowsNullKeys,
        allowsNullValues,
        supportsPut,
        supportsRemove,
        supportsClear,
        supportsRemove);

    }
  }

  protected boolean supportsRemove() {
    return true;
  }

  protected boolean supportsNullValues() {
    return false;
  }

  public void testClear() {
    table = create("foo", 1, 'a', "bar", 1, 'b', "foo", 3, 'c');
    if (supportsRemove()) {
      table.clear();
      assertEquals(0, table.size());

    MapTests(
        boolean allowsNullValues,
        boolean supportsPut,
        boolean supportsRemove,
        boolean supportsClear,
        boolean supportsIteratorRemove) {
      super(
          false,
          allowsNullValues,
          supportsPut,
          supportsRemove,
          supportsClear,
          supportsIteratorRemove);
    }

    @Override

    }
  }

  protected boolean supportsRemove() {
    return true;
  }

  protected boolean supportsNullValues() {
    return false;
  }

  public void testClear() {
    table = create("foo", 1, 'a', "bar", 1, 'b', "foo", 3, 'c');
    if (supportsRemove()) {
      table.clear();
      assertEquals(0, table.size());

  protected SortedMapInterfaceTest(
      boolean allowsNullKeys,
      boolean allowsNullValues,
      boolean supportsPut,
      boolean supportsRemove,
      boolean supportsClear) {
    super(allowsNullKeys, allowsNullValues, supportsPut, supportsRemove, supportsClear);
  }

  @Override
  protected abstract SortedMap<K, V> makeEmptyMap() throws UnsupportedOperationException;

  @Override

  protected SortedMapInterfaceTest(
      boolean allowsNullKeys,
      boolean allowsNullValues,
      boolean supportsPut,
      boolean supportsRemove,
      boolean supportsClear) {
    super(allowsNullKeys, allowsNullValues, supportsPut, supportsRemove, supportsClear);
  }

  @Override
  protected abstract SortedMap<K, V> makeEmptyMap() throws UnsupportedOperationException;

  @Override

    try {
      map = makePopulatedMap();
    } catch (UnsupportedOperationException e) {
      return;
    }
    String keyToRemove = map.keySet().iterator().next();
    if (supportsRemove) {
      int initialSize = map.size();
      // var oldValue = map.get(keyToRemove);
      map.remove(keyToRemove);
      // This line doesn't hold - see the Javadoc comments above.

  }

  // retainAll(empty)

  @CollectionFeature.Require(SUPPORTS_REMOVE)
  @CollectionSize.Require(ZERO)
  public void testRetainAll_emptyPreviouslyEmpty() {
    expectReturnsFalse(empty);
    expectUnchanged();
  }

  @CollectionFeature.Require(absent = SUPPORTS_REMOVE)
  @CollectionSize.Require(ZERO)
  public void testRetainAll_emptyPreviouslyEmptyUnsupported() {

  }

  @MapFeature.Require(SUPPORTS_REMOVE)
  public void testRemove_supportedWrongKeyPresentValue() {
    assertFalse(getMap().remove(k3(), v0()));
    expectUnchanged();
  }

  @MapFeature.Require(SUPPORTS_REMOVE)
  public void testRemove_supportedAbsentKeyAbsentValue() {
    assertFalse(getMap().remove(k3(), v3()));
    expectUnchanged();
  }

  @MapFeature.Require(value = SUPPORTS_REMOVE, absent = ALLOWS_NULL_KEY_QUERIES)

  @MapFeature.Require({SUPPORTS_PUT, SUPPORTS_REMOVE, ALLOWS_NULL_VALUES})
  public void testReplaceValuesWithNullValue() {
    List<V> values = asList(v0(), null, v3());
    multimap().replaceValues(k0(), values);
    assertGet(k0(), values);
  }

  @MapFeature.Require({SUPPORTS_PUT, SUPPORTS_REMOVE, ALLOWS_NULL_KEYS})
  public void testReplaceValuesWithNullKey() {