code: public static void registerSerializers(final Kryo kryo) {
          final ArrayListMultimapSerializer serializer = new ArrayListMultimapSerializer();
          kryo.register(ArrayListMultimap.class, serializer);
      }
docs: Creates a new {@link ArrayListMultimapSerializer} and registers its serializer.
  
  @param kryo the {@link Kryo} instance to set the serializer on