She waited for some time without hearing anything more:  at
last came a rumbling of little cartwheels, and the sound of a
good many voices all talking together:  she made out the words:
`Where's the other ladder?--Why, I hadn't to bring but one;
Bill's got the other--Bill! fetch it here, lad!--Here, put 'em up
at this corner--No, tie 'em together first--they don't reach half

    Function<Integer, Integer> adder =
        new Function<Integer, Integer>() {
          @Override
          public Integer apply(Integer from) {
            return from + holder.value;
          }
        };

    // Since holder.value is 2, applying 4 should yield 6.
    assertEquals(6, adder.apply(4).intValue());

    Function<Integer, Integer> adder =
        new Function<Integer, Integer>() {
          @Override
          public Integer apply(Integer from) {
            return from + holder.value;
          }
        };

    // Since holder.value is 2, applying 4 should yield 6.
    assertEquals(6, adder.apply(4).intValue());

  She waited for some time without hearing anything more:  at
last came a rumbling of little cartwheels, and the sound of a
good many voices all talking together:  she made out the words:
`Where's the other ladder?--Why, I hadn't to bring but one;
Bill's got the other--Bill! fetch it here, lad!--Here, put 'em up
at this corner--No, tie 'em together first--they don't reach half