In the version 4.1.0 I can see that @Extras annotation was added however I cannot use it because it's not available. When do you plan to dispatch this feature?

[Roman-Diachenko]

Example of usage:

@get('api/ClientAccount/check-email-exists')
Future<BaseResponse> checkEmail1(@query('email') String email, @Extras() Map<String, dynamic> extras);

Actual result:
Undefined name 'Extras' used as an annotation.

Expected result:
Extras are added into dio.Options class so that we can use additional info in interceptors, for example