public static <T,K,U>Collector<SimpleEntry<K,U>,?,LinkedHashMap<K,U>> entryToLinkedMap(){
  return Collectors.toMap(null,null,null,null);
}

public static < T , K , U > Collector < SimpleEntry < K , U > , ? , LinkedHashMap < K , U > > entryToLinkedMap ( ) { return Collectors . toMap ( null , null , null , null ) ; }
gets collector to linked hash map .
