void addItem_(TorrentState const& info, ParamsMap_t other_info);
void updateItem_(DownloadViewItem *item
, TorrentState const& info, ParamsMap_t other_info);
void addItem_(TorrentState const& info, ParamsMap_t other_info);
void updateItem_(DownloadViewItem *item
, TorrentState const& info, ParamsMap_t other_info);