Option classes do not support JSON serialization/deserialization

[junan-trustarc]

Environment details

1. Specify the API at the beginning of the title. For example, "[vision]: ..."). General, Core, and Other are also allowed as types google-cloud-vertexai
2. OS type and version: Window 11
3. Java version: 21
4. Version(s): 1.6.0

I am creating wrapper endpoint for vertex AI API on our AI microservice to have add-on features and centralize many other AI providers. and we have our own SDK to call this wrapper endpoint. most of classes from this library doesn't support JSON serialization/deserialization. Since there is too many properties and it keeps managing by library, I can't manually map it. Is there anyway to do?

Code example

   @PostMapping(value = "/generate-content")
    public Flux<GenerateContentResponse> generateContent(@RequestBody GenerateContentRequest request) {
        // request is not working since it doesn't support deserialization 
    }