| library test; | 
 | import self as self; | 
 | import "dart:async" as asy; | 
 | import "dart:core" as core; | 
 |  | 
 | import "dart:async"; | 
 |  | 
 | static method test(asy::Future<core::int> base) → dynamic { | 
 |   asy::Future<core::bool> f = base.{asy::Future::then}<core::bool>((core::int x) → core::bool { | 
 |     return x =={core::num::==}{(core::Object) → core::bool} 0; | 
 |   }){((core::int) → FutureOr<core::bool>, {onError: core::Function?}) → asy::Future<core::bool>}; | 
 |   asy::Future<core::bool> g = base.{asy::Future::then}<core::bool>((core::int x) → core::bool => x =={core::num::==}{(core::Object) → core::bool} 0){((core::int) → FutureOr<core::bool>, {onError: core::Function?}) → asy::Future<core::bool>}; | 
 |   asy::Future<core::bool> b = f; | 
 |   b = g; | 
 | } | 
 | static method main() → dynamic {} |