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 •() → self::B<self::B::T>
    : super core::Object::•()
    ;
}
class C extends core::Object {
  field core::num x = null;
  synthetic constructor •() → self::C
    : super core::Object::•()
    ;
}
class D extends self::C implements self::B<core::num> {
  synthetic constructor •() → self::D
    : super self::C::•()
    ;
  forwarding-stub set x(generic-covariant-impl core::num _) → void
    return super.{self::C::x} = _;
}
static method main() → void {}