@CanIgnoreReturnValue
  public final Ordered containsExactly() {
    return containsExactlyEntriesIn(ImmutableMap.of());
  }
@Test
  public void containsExactlyExtraKeyAndWrongValue() {
    ImmutableMap<String, Integer> actual = ImmutableMap.of("jan", 1, "feb", 2, "march", 3);
    expectFailureWhenTestingThat(actual).containsExactly("jan", 1, "march", 33);
    assertFailureKeys(
        "keys with wrong values",
        "for key",
        "expected value",
        "but got value",
        "unexpected keys",
        "for key",
        "unexpected value",
        "---",
        "expected",
        "but was");
    assertFailureValueIndexed("for key", 0, "march");
    assertFailureValue("expected value", "33");
    assertFailureValue("but got value", "3");
    assertFailureValueIndexed("for key", 1, "feb");
    assertFailureValue("unexpected value", "2");
  }