public void isAnyOf(
      @Nullable Object first, @Nullable Object second, @Nullable Object @Nullable ... rest) {
    isIn(accumulate(first, second, rest));
  }
@Test
  public void isAnyOfFailure() {
    expectFailure.whenTesting().that("x").isAnyOf("a", "b", "c");
    assertFailureKeys("expected any of", "but was");
    assertFailureValue("expected any of", "[a, b, c]");
  }