code: public String name() {
          torrent_status ts = th.status(torrent_handle.query_name);
          return ts.getName();
      }
docs: The name of the torrent. Typically this is derived from the
  .torrent file. In case the torrent was started without metadata,
  and hasn't completely received it yet, it returns the name given
  to it when added to the session.
  
  @return the name