| import 'main_lib1.dart'; | 
 | import 'main_lib2.dart'; | 
 |  | 
 | class C6Ext extends C6 { | 
 |   C6Ext({super.param}); | 
 | } | 
 |  | 
 | class C7Ext extends C7 { | 
 |   C7Ext({super.param}); | 
 | } | 
 |  | 
 | class D3 extends C3 {} | 
 |  | 
 | class D4 extends C4 { | 
 |   int? get field1 => null; | 
 |   int? get field2 => null; | 
 |   set field1(int? value) {} | 
 |   set field2(int? value) {} | 
 |   void method1() {} | 
 |   void method2() {} | 
 | } | 
 |  | 
 | class E3 implements C3 {} | 
 |  | 
 | class E4 implements C4 { | 
 |   int? field1; | 
 |   int? field2; | 
 |   void method1() {} | 
 |   void method2() {} | 
 | } | 
 |  | 
 | class F1 with M1 {} | 
 |  | 
 | class F2 with M2 {} | 
 |  | 
 | class Impl1 extends Base implements Interface {} | 
 |  | 
 | class Impl2 with Mixin implements Interface {} | 
 |  | 
 | dynamic x; | 
 |  | 
 | void main() {} | 
 |  | 
 | void test() {} |