|  | library; | 
|  | import self as self; | 
|  | import "dart:core" as core; | 
|  |  | 
|  | class TypeExpecter<X extends core::Object? = dynamic> extends core::Object { | 
|  | synthetic constructor •() → self::TypeExpecter<self::TypeExpecter::X%> | 
|  | ; | 
|  | method checkType<Y extends core::Object? = dynamic>(dynamic value) → self::TypeExpecter::checkType::Y% | 
|  | ; | 
|  | } | 
|  | static method test1(core::int? x) → dynamic | 
|  | ; | 
|  | static method test2(dynamic x) → dynamic | 
|  | ; | 
|  | static method test3(core::String? key) → dynamic | 
|  | ; | 
|  | static method test4(dynamic key) → dynamic | 
|  | ; | 
|  | static method test5(core::String? value) → dynamic | 
|  | ; | 
|  | static method test6(dynamic value) → dynamic | 
|  | ; | 
|  | static method test7(core::int? key, core::Symbol? value) → dynamic | 
|  | ; | 
|  | static method test8(dynamic key, dynamic value) → dynamic | 
|  | ; | 
|  | static method main() → dynamic | 
|  | ; | 
|  | static method expectType<T extends core::Object? = dynamic>(dynamic x) → dynamic | 
|  | ; | 
|  | static method expectThrows<T extends core::Object? = dynamic>(() → void f) → dynamic | 
|  | ; |