@_check_player_is_active<EOL><INDENT>def select_subtitle(self, index):<DEDENT>
return self._player_interface.SelectSubtitle(dbus.Int32(index))<EOL>
Enable a subtitle specified by the index it is listed in :class:`list_subtitles`

Args:
    index (int): index of subtitle listing returned by :class:`list_subtitles`