MessingWithLists.java

    public List<String> getOptions() {
        if (mOptions == null) {
            FluentIterable<String> options = FluentIterable
                    .from(mAvailableThings)
                    .transform(Thing::getName);
            mOptions = Lists.newArrayList(ImmutableSet.copyOf(options));
        }
        return mOptions;
    }

    public List<String> getTranslatedOptions() {
        FluentIterable<String> tOptions = FluentIterable.from(getOptions()).transform(s -> translate(s));
        return Lists.newArrayList(tOptions);
    }