Multimap<String, Integer> unmod = Multimaps.unmodifiableMultimap(mod);
    assertThat(unmod).isNotSameInstanceAs(mod);
    assertThat(Multimaps.unmodifiableMultimap(unmod)).isSameInstanceAs(unmod);
    ImmutableMultimap<String, Integer> immutable = ImmutableMultimap.of("a", 1, "b", 2, "a", 3);
    assertThat(Multimaps.unmodifiableMultimap(immutable)).isSameInstanceAs(immutable);

    assertOrderingReadOnly(multimap);
  }

  public void testOrderingUnmodifiable() {
    SetMultimap<String, Integer> multimap = initializeMultimap5();
    assertOrderingReadOnly(Multimaps.unmodifiableMultimap(multimap));
  }

  @J2ktIncompatible // Synchronized
  public void testOrderingSynchronized() {
    SetMultimap<String, Integer> multimap = initializeMultimap5();