| library; | 
 | import self as self; | 
 | import "dart:core" as core; | 
 | import "dart:async" as asy; | 
 |  | 
 | import "dart:async"; | 
 |  | 
 | class X extends core::Object { | 
 |   final field dynamic x; | 
 |   final field dynamic y; | 
 |   constructor •(dynamic x, dynamic y) → self::X | 
 |     ; | 
 |   method toString() → core::String | 
 |     ; | 
 | } | 
 | class Y extends core::Object { | 
 |   synthetic constructor •() → self::Y | 
 |     ; | 
 |   method f(wildcard dynamic _#wc0#formal) → dynamic | 
 |     ; | 
 | } | 
 | static method f1() → asy::Future<core::List<core::Object>> async  | 
 |   ; | 
 | static method f2() → core::List<core::Object> | 
 |   ; | 
 | static method f3() → asy::Future<core::Object> async  | 
 |   ; | 
 | static method foo() → asy::Future<self::X> async  | 
 |   ; | 
 | static method main() → asy::Future<void> async  | 
 |   ; |