List<Integer> input = asList(1, 2, 3);
    FluentIterable<String> unused =
        FluentIterable.from(input).transformAndConcat(new RepeatedStringValueOfWildcardFunction());
  }

  public void testFirst_list() {
    List<String> list = Lists.newArrayList("a", "b", "c");
    assertThat(FluentIterable.from(list).first()).hasValue("a");
  }

  public void testFirst_null() {