docs: def GetPlaylists(self, start, max_count, order, reversed):
          """Gets a set of playlists.
  
          :param int start: The index of the first playlist to be fetched
                             (according to the ordering).
          :param int max_count: The maximum number of playlists to fetch.
          :param str order: The ordering that should be used.
          :param bool reversed: Whether the order should be reversed.
          """
          cv = convert2dbus
          return self.iface.GetPlaylists(cv(start, 'u'),
                                         cv(max_count, 'u'),
                                         cv(order, 's'),
                                         cv(reversed, 'b'))