library test /*isNonNullableByDefault*/;
import self as self;
import "dart:core" as core;

typedef G<V extends core::Object? = dynamic> = () → core::List<V%>;
class C<T extends core::Object? = dynamic> extends self::D<self::C::T%> {
  synthetic constructor •() → self::C<self::C::T%>
    : super self::D::•()
    ;
  method f<U extends core::Object? = dynamic>(() → core::List<self::C::f::U%> g) → void
    return null;
}
abstract class D<T extends core::Object? = dynamic> extends core::Object {
  synthetic constructor •() → self::D<self::D::T%>
    : super core::Object::•()
    ;
  abstract method f<U extends core::Object? = dynamic>(() → core::List<self::D::f::U%> g) → void;
}
static method main() → dynamic {}