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

class A<X extends core::Object* = dynamic> extends core::Object {
  generic-covariant-impl field self::A::X* field = null;
  synthetic constructor •() → self::A<self::A::X*>*
    : super core::Object::•()
    ;
}
abstract class B<Y extends core::Object* = dynamic> extends core::Object implements self::A<self::B::Y*> {
  synthetic constructor •() → self::B<self::B::Y*>*
    : super core::Object::•()
    ;
  abstract get field() → self::B::Y*;
  abstract set field(generic-covariant-impl self::B::Y* value) → void;
}
abstract class C extends core::Object implements self::A<core::int*> {
  synthetic constructor •() → self::C*
    : super core::Object::•()
    ;
  abstract get field() → core::int*;
  abstract set field(generic-covariant-impl core::int* value) → void;
}
static method main() → dynamic {}