|  | library; | 
|  | // | 
|  | // Problems in library: | 
|  | // | 
|  | // pkg/front_end/testcases/general/abstract_async.dart:6:32: Error: Abstract methods can't use 'async', 'async*', or 'sync*'. | 
|  | //   void abstractSyncStar() sync*; | 
|  | //                                ^ | 
|  | // | 
|  | // pkg/front_end/testcases/general/abstract_async.dart:6:32: Error: Expected a function body or '=>'. | 
|  | // Try adding {}. | 
|  | //   void abstractSyncStar() sync*; | 
|  | //                                ^ | 
|  | // | 
|  | // pkg/front_end/testcases/general/abstract_async.dart:7:29: Error: Abstract methods can't use 'async', 'async*', or 'sync*'. | 
|  | //   void abstractAsync() async; | 
|  | //                             ^ | 
|  | // | 
|  | // pkg/front_end/testcases/general/abstract_async.dart:7:29: Error: Expected a function body or '=>'. | 
|  | // Try adding {}. | 
|  | //   void abstractAsync() async; | 
|  | //                             ^ | 
|  | // | 
|  | // pkg/front_end/testcases/general/abstract_async.dart:8:34: Error: Abstract methods can't use 'async', 'async*', or 'sync*'. | 
|  | //   void abstractAsyncStar() async*; | 
|  | //                                  ^ | 
|  | // | 
|  | // pkg/front_end/testcases/general/abstract_async.dart:8:34: Error: Expected a function body or '=>'. | 
|  | // Try adding {}. | 
|  | //   void abstractAsyncStar() async*; | 
|  | //                                  ^ | 
|  | // | 
|  | import self as self; | 
|  | import "dart:core" as core; | 
|  |  | 
|  | abstract class Class extends core::Object { | 
|  | synthetic constructor •() → self::Class | 
|  | ; | 
|  | abstract method abstractSyncStar() → void; | 
|  | abstract method abstractAsync() → void; | 
|  | abstract method abstractAsyncStar() → void; | 
|  | } |