| mixin Diagnosticable { |
| void debugFillProperties(DiagnosticPropertiesBuilder properties) {} |
| } |
| |
| class DiagnosticPropertiesBuilder {} |
| |
| abstract class PointerEvent with Diagnosticable {} |
| |
| abstract class PointerSignalEvent extends PointerEvent {} |
| |
| mixin _PointerEventDescription on PointerEvent { |
| @override |
| void debugFillProperties(DiagnosticPropertiesBuilder properties) {} |
| } |
| mixin _CopyPointerScrollEvent on PointerEvent {} |
| |
| class PointerScrollEvent extends PointerSignalEvent |
| with _PointerEventDescription, _CopyPointerScrollEvent { |
| @override |
| void debugFillProperties(DiagnosticPropertiesBuilder properties) {} |
| } |
| |
| main() {} |