public List<String> toList(boolean trim) {
		return toList((str) -> trim ? StrUtil.trim(str) : str);
	}
@Test
	public void splitByEmptyTest(){
		assertThrows(IllegalArgumentException.class, () -> {
			String text = "aa,bb,cc";
			SplitIter splitIter = new SplitIter(text,
				new StrFinder("", false),
				3,
				false
			);

			final List<String> strings = splitIter.toList(false);
			assertEquals(1, strings.size());
		});
	}