docs: public static MutableDoubleTuple toDoubleTuple(LongTuple longTuple)
      {
          int d = longTuple.getSize();
          MutableDoubleTuple doubleTuple = DoubleTuples.create(d);
          for (int i=0; i<d; i++)
          {
              doubleTuple.set(i, longTuple.get(i));
          }
          return doubleTuple;
      }