|  | library; | 
|  | import self as self; | 
|  | import "dart:core" as core; | 
|  |  | 
|  | class Foo extends core::Object { | 
|  | field dynamic _field = new self::Bar::•(); | 
|  | default constructor •() → void | 
|  | : super core::Object::•() | 
|  | ; | 
|  | } | 
|  | class Bar extends core::Object { | 
|  | default constructor •() → void | 
|  | : super core::Object::•() | 
|  | ; | 
|  | } | 
|  | static method useCallback(dynamic callback) → dynamic { | 
|  | dynamic _ = callback.call(); | 
|  | } | 
|  | static method main() → dynamic { | 
|  | dynamic x; | 
|  | function inner() → dynamic { | 
|  | x = new self::Foo::•(); | 
|  | return new self::Foo::•(); | 
|  | } | 
|  | self::useCallback(inner); | 
|  | dynamic _ = inner.call()._field; | 
|  | } |