Callback listenersEvent Listener for Backup your chat# Mirrorfly.onBackupSuccess.listen((backUpFilePath) { }); Mirrorfly.onBackupFailure.listen((error) { }); Mirrorfly.onBackupProgressChanged.listen((value) { var progress = int.parse(value.toString()) / 100; }); CopyEvent Listener for Restore from a backup file# Mirrorfly.onRestoreSuccess.listen((response) { }); Mirrorfly.onRestoreFailure.listen((error) { }); Mirrorfly.onRestoreProgressChanged.listen((value) { var progress = int.parse(value.toString()) / 100; }); Copy