I've added an extending message to a message and need to marshal it as a json. However the field name for the extension message is [message.extension_message_name].

I would prefer it to be named just extension_message_name, without the braces and prefix, since this extension message exists elsewhere in our API and and having this weird name adds confusion.

As far as I can tell the bit of code responsible is in protobuf/jsonpb, where the JSONName is set with fmt.Sprintf("[%s]", desc.Name and cannot be overwritten it seems.

Anyone have a workaround for this?