docs: @CanIgnoreReturnValue
    public final Ordered containsExactly(@NullableDecl Object... varargs) {
      List<Object> expected = (varargs == null) ? newArrayList((Object) null) : asList(varargs);
      return containsExactlyElementsIn(
          expected, varargs != null && varargs.length == 1 && varargs[0] instanceof Iterable);
    }