@Test public void test_skip_2() { Assert.assertEquals("3,4,5", Flow.of(1, 2, 3, 4, 5) .groupBy(new Mapper<Integer, Integer>() { @Override public Integer map(Integer integer) { return integer; } }) .skip(2) .map(new Mapper<FlowGroup<Integer, Integer>, Integer>() { @Override public Integer map(FlowGroup<Integer, Integer> group) { return group.key; } }) .join(",") .get()); }