public void doesNotContainCell(
      @Nullable Object rowKey, @Nullable Object colKey, @Nullable Object value) {
    doesNotContainCell(
        Tables.<@Nullable Object, @Nullable Object, @Nullable Object>immutableCell(
            rowKey, colKey, value));
  }
@Test
  public void doesNotContainCell() {
    ImmutableTable<String, String, String> table = ImmutableTable.of("row", "col", "val");
    assertThat(table).doesNotContainCell("row", "row", "val");
    assertThat(table).doesNotContainCell("col", "row", "val");
    assertThat(table).doesNotContainCell("col", "col", "val");
    assertThat(table).doesNotContainCell(null, null, null);
    assertThat(table).doesNotContainCell(cell("row", "row", "val"));
    assertThat(table).doesNotContainCell(cell("col", "row", "val"));
    assertThat(table).doesNotContainCell(cell("col", "col", "val"));
    assertThat(table).doesNotContainCell(cell(null, null, null));
  }