assertEquals(alternatingKeysAndValues[i++], entry.getValue());
    }
  }

  @J2ktIncompatible
  @GwtIncompatible // SerializableTester
  public void testSerialization() {
    Multimap<String, Integer> multimap = createMultimap();
    SerializableTester.reserializeAndAssert(multimap);
    assertEquals(multimap.size(), SerializableTester.reserialize(multimap).size());