[java] Java 8 Distinct by property

My solution in this listing:

List<HolderEntry> result ....

List<HolderEntry> dto3s = new ArrayList<>(result.stream().collect(toMap(
            HolderEntry::getId,
            holder -> holder,  //or Function.identity() if you want
            (holder1, holder2) -> holder1 
    )).values());

In my situation i want to find distinct values and put their in List.

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