|  | library; | 
|  | import self as self; | 
|  | import "dart:core" as core; | 
|  |  | 
|  | abstract class A<X extends core::Object? = dynamic> extends core::Object /*isMixinDeclaration*/  { | 
|  | } | 
|  | class B<Z extends core::Object? = dynamic> extends self::_B&Object&A<self::B::Z%> { | 
|  | synthetic constructor •() → self::B<self::B::Z%> | 
|  | : super self::_B&Object&A::•() | 
|  | ; | 
|  | } | 
|  | abstract class _B&Object&A<Z extends core::Object? = dynamic> = core::Object with self::A<() → self::_B&Object&A::Z%> /*isAnonymousMixin,hasConstConstructor*/  { | 
|  | const synthetic constructor •() → self::_B&Object&A<self::_B&Object&A::Z%> | 
|  | : super core::Object::•() | 
|  | ; | 
|  | } | 
|  | static method main() → dynamic {} |