Generating MetaSchema for custom object types.

[catsharkdigital]

I have an application where I have custom JSON object types that are getting passed in the body of the requests/responses. I am implementing the Type trait and am a little stuck with the intended way to put together the MetaSchemaRef such that the object definitions are part of the OAI3 spec. I'm using serde for json serialization/deserialization. If there is an example to point me to or just a hint to get me going the right direction that would be much appreciated. Thanks!