},
                        "tags": {
                            "title": "Tags",
                            "uniqueItems": True,
                            "type": "array",
                            "items": {"type": "string"},
                            "default": [],
                        },
                    },
                },
                "ValidationError": {

    // In GWT array access never throws IndexOutOfBoundsException.
    checkElementIndex(rowIndex, rowList.size());
    checkElementIndex(columnIndex, columnList.size());
    V oldValue = array[rowIndex][columnIndex];
    array[rowIndex][columnIndex] = value;
    return oldValue;
  }

  /**
   * Returns a two-dimensional array with the table contents. The row and column indices correspond

    assertTrue(TypeToken.of(Object[].class).isArray());
    assertTrue(TypeToken.of(Object[][].class).isArray());
    assertTrue(TypeToken.of(char[].class).isArray());
    assertTrue(TypeToken.of(char[][].class).isArray());
    assertTrue(TypeToken.of(byte[].class).isArray());
    assertTrue(TypeToken.of(short[].class).isArray());
    assertTrue(TypeToken.of(int[].class).isArray());
    assertTrue(TypeToken.of(long[].class).isArray());

  public void testRetainAll_duplicatesKept() {
    E[] array = createSamplesArray();
    array[1] = e0();
    collection = getSubjectGenerator().create(array);
    assertFalse(
        "containsDuplicates.retainAll(superset) should return false",
        collection.retainAll(MinimalCollection.of(createSamplesArray())));
    expectContents(array);
  }

  @CollectionFeature.Require(SUPPORTS_REMOVE)

/**
 * Simple helper class to build a "sparse" array of objects based on the indexes that were added to
 * it. The array will be from 0 to the maximum index given. All non-set indexes will contain null
 * (so it's not really a sparse array, just a pseudo sparse array). The builder can also return a
 * CharEscaper based on the generated array.
 *
 * @author Sven Mawson
 * @since 15.0
 */
@GwtCompatible

                            "required": False,
                            "schema": IsDict(
                                {
                                    "anyOf": [
                                        {"type": "array", "items": {"type": "string"}},
                                        {"type": "null"},
                                    ],
                                    "title": "Q",
                                }

                            "required": False,
                            "schema": IsDict(
                                {
                                    "anyOf": [
                                        {"type": "array", "items": {"type": "string"}},
                                        {"type": "null"},
                                    ],
                                    "title": "Q",
                                }

            return source;
        }
        final char[] array = source.toCharArray();
        for (int i = 0; i < array.length; ++i) {
            switch (array[i]) {
            case WAVE_DASH:
                array[i] = FULLWIDTH_TILDE;
                break;
            case DOUBLE_VERTICAL_LINE:
                array[i] = PARALLEL_TO;
                break;
            case MINUS_SIGN:

                                {
                                    "title": "X-Token",
                                    "anyOf": [
                                        {"type": "array", "items": {"type": "string"}},
                                        {"type": "null"},
                                    ],
                                }
                            )

    resetContainer();
  }

  /** @return an array of the proper size with {@code null} inserted into the middle element. */
  protected E[] createArrayWithNullElement() {
    E[] array = createSamplesArray();
    array[getNullLocation()] = null;
    return array;
  }

  protected void initCollectionWithNullElement() {
    E[] array = createArrayWithNullElement();