class LongIndex implements Index {

  public Selection atMost(long value) {
    Selection selection = new BitmapBackedSelection();
    Long2ObjectSortedMap<IntArrayList> head =
        index.headMap(value + 1); // we add 1 to get values equal to the arg
    for (IntArrayList keys : head.values()) {
      addAllToSelection(keys, selection);
    }
    return selection;
  }

  public  LongIndex(TemporalColumn<?> column);
  public  LongIndex(IntColumn column);
  public  LongIndex(LongColumn column);

}