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.

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'))