Encoding batch requests via Twirp? 207 Multi-Status support in error spec?

[Lupus]

Hello! What's the best way to introduce batched request handlers to the Twirp IDL? The request can just be an additional message that wraps other request(s) in a repeated field obviously, but how to encode response? Some operations might fail independently from others which might succeed. If we consider this as a Twirp error, it should have separate HTTP code, probably 207 Multi-Status, with some well-defined JSON representation for a list of successful results/errors, but currently 207 code is not considered a Twirp error code according to the spec. Other option is to encode is as a successful response and distinguish the semantics between successful and failed responses via protobuf types.

Has anyone stumbled upon such dilemma already?