flutter / dart reflectable package : Not reflecting base/super class members

import 'package:reflection_test2/common/reflect/Reflector.dart';

@reflector
class Base
{
  String s1;
}

@reflector
class Sub extends Base
{
  String s2;
}

ClassMirror classMirror = reflector.reflectType(Sub);

=> Here classMirror reflects only s2, not reflecting base/super class member s1.