Flutterでバックグラウンドの定期処理

attributes = {
    LastUpgradeCheck = 1020;
    ORGANIZATIONNAME = "";
    TargetAttributes = {
        xxxxxxxxxxxxxxxxxxxx = {
            CreatedOnToolsVersion = x.x.x;
            LastSwiftMigration = 1100;
            SystemCapabilities = {
                com.apple.BackgroundModes = {
                    enabled = 1;
                };
            };
        };
    };
};

  workmanager:
    git:
      url: https://github.com/fluttercommunity/flutter_workmanager
      ref: 1c4e162ea4e71855856fb9e55a1545b3dae9a25d

WorkmanagerPlugin.setPluginRegistrantCallback { registry in
        FLTSharedPreferencesPlugin.register(with: registry.registrar(forPlugin: "io.flutter.plugins.sharedpreferences")!)
        
        FLTFirebaseFirestorePlugin
            .register(with: registry.registrar(forPlugin: "io.flutter.plugins.firebase.cloudfirestore")!)
    }