Future<void> preDownloadMiniApp(List<String> appIdList,
   {bool isDownload = false, bool isDownloadAll = false})

List<String> appIdList = ['app_id_1', 'app_id_2', 'app_id_3']; 
_tcmppFlutterPlugin.preDownloadMiniApp(appIdList, isDownload: true, isDownloadAll: true);