| Index: lib/protoc.dart | 
| diff --git a/lib/protoc.dart b/lib/protoc.dart | 
| index 20c5dc7f1f1ee184897c84cc221931e0f2ac32e5..7289bac5f235ecee6f7e8f0dce4573e2c9b31734 100644 | 
| --- a/lib/protoc.dart | 
| +++ b/lib/protoc.dart | 
| @@ -4,10 +4,12 @@ import 'dart:async'; | 
| import 'dart:io'; | 
|  | 
| import 'package:protobuf/protobuf.dart'; | 
| +import 'package:protobuf/mixins_meta.dart'; | 
| import 'package:path/path.dart' as path; | 
|  | 
| import 'src/descriptor.pb.dart'; | 
| import 'src/plugin.pb.dart'; | 
| +import 'src/dart_options.pb.dart'; | 
|  | 
| part 'code_generator.dart'; | 
| part 'enum_generator.dart'; | 
|  |