public void isEqualTo(@Nullable Object expected) {
    standardIsEqualTo(expected);
  }
@Test
  public void isEqualToFailureWithNulls() {
    Object o = null;
    expectFailure.whenTesting().that(o).isEqualTo("a");
    assertFailureKeys("expected", "but was");
    assertFailureValue("expected", "a");
    assertFailureValue("but was", "null");
  }