Some examples: branch_stream function exist in multiple files, such as https://github.com/flutter/cocoon/blob/master/app_dart/test/request_handlers/refresh_cirrus_status_test.dart#L39

Also MockGitHub class (https://github.com/flutter/cocoon/blob/master/app_dart/test/request_handlers/refresh_cirrus_status_test.dart#L233), etc.