code: public LongStreamEx reverseSorted() {
          LongUnaryOperator inv = x -> ~x;
          return new LongStreamEx(stream().map(inv).sorted().map(inv), context);
      }
docs: Returns a stream consisting of the elements of this stream in reverse
  sorted order.
  
  <p>
  This is a stateful intermediate operation.
  
  @return the new stream
  @since 0.0.8