[Java] Optional for-each Java 8

List<Integer> list = Arrays.asList(123, 456, 789); // itemCd

Optional.ofNullable(list)
	.orElseThrow(Exception::new)
//    	.orElse(Collections::emptyList)
	.stream()
	.forEach(itemCd -> {
    		OOOService.update(XXXCriteria.builder()
					.itemCd(itemCd)
					.build());
	});