| // @dart = 2.19 | |
| import "dart:core" as core; | |
| class A implements core.Function { | |
| operator ==(other) => false; | |
| } | |
| class B implements Function { | |
| operator ==(other) => false; | |
| } | |
| class Function { | |
| core.bool operator ==(core.Object other) => false; | |
| } | |
| main() {} |