assertThat(copy).containsExactly("a", "b").inOrder();
  }

  @J2ktIncompatible
  @GwtIncompatible // SerializableTester
  public void testSerialization_entrySet() {
    Multiset<String> c = ImmutableMultiset.of("a", "b", "c");
    SerializableTester.reserializeAndAssert(c.entrySet());
  }

  public void testEquals_immutableMultiset() {
    new EqualsTester()

    assertThat(copy).containsExactly("a", "b").inOrder();
  }

  @J2ktIncompatible
  @GwtIncompatible // SerializableTester
  public void testSerialization_entrySet() {
    Multiset<String> c = ImmutableMultiset.of("a", "b", "c");
    SerializableTester.reserializeAndAssert(c.entrySet());
  }

  public void testEquals_immutableMultiset() {
    new EqualsTester()

    Collection<String> copy = SerializableTester.reserializeAndAssert(c.elementSet());
    assertThat(copy).containsExactly("a", "b").inOrder();
  }

  public void testSerialization_entrySet() {
    Multiset<String> c = ImmutableSortedMultiset.of("a", "b", "c");
    SerializableTester.reserializeAndAssert(c.entrySet());
  }

  public void testEquals_immutableMultiset() {