### What happened? Documentation an several SDK implementation are using `push_notitifcation_config`. https://github.com/a2aproject/A2A/blob/472c7362028150634f658c3dd0013a472090ead7/specification/grpc/a2a.proto#L121 Related conversation here: https://github.com/a2aproject/a2a-java/pull/290 Will raise PR along with issue. ### Relevant log output ```shell ``` ### Code of Conduct - [x] I agree to follow this project's Code of Conduct