library test;
import self as self;
import "dart:core" as core;

class B<T extends core::Object = dynamic> extends core::Object {
  generic-covariant-impl field self::B::T x = null;
  synthetic constructor •() → void
    : super core::Object::•()
    ;
}
class C extends self::B<core::num> {
  synthetic constructor •() → void
    : super self::B::•()
    ;
}
static method main() → void {}