| library; | 
 | import self as self; | 
 | import "dart:core" as core; | 
 | import "mixin_from_opt_in_lib.dart" as mix; | 
 |  | 
 | import "org-dartlang-testcase:///mixin_from_opt_in_lib.dart"; | 
 |  | 
 | abstract class _Class&Object&Mixin = core::Object with mix::Mixin /*isAnonymousMixin,hasConstConstructor*/  { | 
 |   const synthetic constructor •() → self::_Class&Object&Mixin* | 
 |     : super core::Object::•() | 
 |     ; | 
 |   mixin-super-stub method method(core::int* i) → core::int* | 
 |     return super.{mix::Mixin::method}(i); | 
 |   abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode | 
 |   abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf | 
 |   abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf | 
 |   abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue | 
 |   abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse | 
 |   abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::== | 
 |   abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode | 
 |   abstract member-signature method toString() → core::String*; -> core::Object::toString | 
 |   abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod | 
 |   abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType | 
 | } | 
 | class Class extends self::_Class&Object&Mixin { | 
 |   synthetic constructor •() → self::Class* | 
 |     : super self::_Class&Object&Mixin::•() | 
 |     ; | 
 | } | 
 | static method main() → dynamic { | 
 |   core::print(new self::Class::•().{self::_Class&Object&Mixin::method}(null)); | 
 | } | 
 |  | 
 | library /*isNonNullableByDefault*/; | 
 | import self as mix; | 
 | import "dart:core" as core; | 
 |  | 
 | class Mixin extends core::Object { | 
 |   synthetic constructor •() → mix::Mixin | 
 |     : super core::Object::•() | 
 |     ; | 
 |   method method(core::int? i) → core::int | 
 |     return let final core::int? #t1 = i in #t1.{core::num::==}(null) ?{core::int} 0 : #t1{core::int}; | 
 | } |