Map<String, String> map =
        new LinkedHashMap<String, String>(
            ImmutableMap.of(
                "Hello", "World",
                "first", "second",
                "polygene", "lubricants",
                "alpha", "betical"));

    @SuppressWarnings("UseCollectionConstructor") // test of factory method
    LinkedHashMap<String, String> copy = Maps.newLinkedHashMap(map);