ProtoInlinedOneOf

This trait can be used to customize the rendering of an Union shape during the conversion to Protobuf models. Union in Protobuf are typically encoded using oneOf.

oneOf can only be used within message and each of their member has an index. This makes them tricky to render. One possible solution is to create a synthetic message to host the oneOf, and then use that message FQN at use site when refering to the Union. There is an alternate encoding where you render the oneOf inside the message where it's used. You can only use this encoding if the Union is used only inside of one structure.

You can use this trait, along with the validator provided, to implement this encoding.