Sometimes "@Object" is used as a type name instead of "Object" or maybe "DartObject"

[JeroMiya]

For example, see FlutterSDK/Cupertino/Colors.cs in the generated output, you'll see for example this line:

internal static FlutterSDK.Foundation.Diagnostics.DiagnosticsProperty<Color> CreateCupertinoColorProperty(string name,FlutterBinding.UI.Color value,bool showName = true,@Object defaultValue = default(@Object),FlutterSDK.Foundation.Diagnostics.DiagnosticsTreeStyle style = default(FlutterSDK.Foundation.Diagnostics.DiagnosticsTreeStyle),DiagnosticLevel level = default(DiagnosticLevel)){
throw new NotImplementedException();
}

}

Without doing too deep of a dive into the code, I'm going to guess the generator is prefixing @Object because it's generated a class called Object (probably the dart base object class?), in which case it would probably be better to rename this DartObject and add a type name rewriting rule to make this more clear.

[JeroMiya]

Looks harmless. Closing for now as low-priority.