Static conversion of protobuf to YAML

[deadbruh]

I've a service which provides API endpoints in both gRPC and REST. Now that I've already have a definition in proto for both the service and it's arguments, I want to convert the same to YAML definition statically so that I do not want to maintain both versions. Is there a tool that does this?

Note: Looked at https://github.com/grpc-ecosystem/grpc-gateway, which isn't quite same as what I need but similar.