class Super {
  final int extendedConcreteField = 0;
  abstract final int extendedAbstractField;
  final int extendedConcreteMixedInConcreteField = 0;
  abstract final int extendedAbstractMixedInConcreteField;
  final int extendedConcreteMixedInAbstractField = 0;
  abstract final int extendedAbstractMixedInAbstractField;
}

class Mixin {
  final int mixedInConcreteField = 0;
  abstract final int mixedInAbstractField;
  final int extendedConcreteMixedInConcreteField = 0;
  final int extendedAbstractMixedInConcreteField = 0;
  abstract final int extendedConcreteMixedInAbstractField;
  abstract final int extendedAbstractMixedInAbstractField;
}

class ClassMixin extends Super with Mixin {}

class NamedMixin = Super with Mixin;
main() {}