private static final class IntegerValueOfFunction implements Function<String, Integer> {
    @Override
    public Integer apply(String from) {
      return Integer.valueOf(from);
    }
  }

  public void testTransformWith() {
    List<String> input = asList("1", "2", "3");
    Iterable<Integer> iterable = FluentIterable.from(input).transform(new IntegerValueOfFunction());

    assertEquals(asList(1, 2, 3), Lists.newArrayList(iterable));