java Stream取出俩个list不同的对象

List userList = obituaryInfoVOS.stream()
                    .filter(obituaryInfoVO -> !digitalAssetVOList.stream()
                            .map(digitalAssetVO -> digitalAssetVO.getObituaryId())
                            .collect(Collectors.toList())
                            .contains(obituaryInfoVO.getId()))
                    .collect(Collectors.toList());