public GridConcurrentSkipListSet(SortedSet<E> s){
  m=new ConcurrentSkipListMap<>(s.comparator());
  addAll(s);
}

public GridConcurrentSkipListSet ( SortedSet < E > s ) { m = new ConcurrentSkipListMap < > ( s . comparator ( ) ) ; addAll ( s ) ; }
constructs a new set containing the same elements and using the same ordering as the specified sorted set .
