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

class B<T extends core::Object? = dynamic> extends core::Object {
  constructor •(self::B::T% t) → self::B<self::B::T%>
    : super core::Object::•()
    ;
}
class C<U extends core::Object? = dynamic> extends self::B<core::List<self::C::U%>> {
  constructor •() → self::C<self::C::U%>
    : super self::B::•(self::f<core::List<self::C::U%>>())
    ;
}
static method f<T extends core::Object? = dynamic>() → self::f::T%
  return throw "";
static method main() → dynamic {}