code: public static <T> Reducer<PersistentList<T>,T> toPersistentListReversed() {
          return Reducer.fromMonoid(Monoids.concatPersistentCollection(Seq.empty()), a -> Seq.of(a));
      }
docs: <pre>
  {@code
  PersistentList<Integer> q = Reducers.toPersistentListReversed()
  .foldMap(Stream.of(1,2,3,4));
  
  }
  </pre>
  @return Reducer for PersistentList in reveresed order