Stream如何将List转换为有序Map

原：

Map<String, Integer> gridPointRs = gridPointList.stream()
                .collect(Collectors.toMap(GridPoint::getGridPointName, GridPoint::getId));

改：

LinkedHashMap<String, Integer> gridPointRs = gridPointList.stream()
                .collect(Collectors.toMap(GridPoint::getGridPointName, GridPoint::getId, (existing, replacement) -> existing, LinkedHashMap::new));