[Question] Is oneOf supported in ruby openapi generator?

Description

Hi there, I have a question: is oneOf supported in the ruby openapi generator?

I'm having such a yaml file (see below) and then I'm trying to write an integration test for it, using ruby generated http client from openapi generator, like this:

before(:all) do
  @client = ::HttpClient::Api.new
 end

 it 'test' do
   some_setting...
   result = @client.get_lpn(paras)

When I run bundle exec rspec spec, it gives this error

NameError:
       uninitialized constant HttpClient::OneOfObjectAObjectB

Clearly, I don't have an object named OneOfObjectAObjectB. What I expect here is that the response can either be objectA or objectB.

Is this an expected result? How would you suggest if I want to achieve what I try to do here?
Appreciate any suggestions in advance!

openapi-generator version

cli-v5.2.0

OpenAPI declaration file content or url

paths:
/v2/endpoint:
    parameters:
     ...
    get:
      ...
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GetResponse'

components:
  schemas:
     GetResponse:
      type: object
      properties:
        data:
          type: object
          oneOf:
            - $ref: '#/components/schemas/objectA'
            - $ref: '#/components/schemas/objectB'

Command line used for generation

docker run openapitools/openapi-generator:cli-v5.2.0 generate ...

Steps to reproduce

N/A

Related issues/PRs

The most similar issue I found is: https://github.com/OpenAPITools/openapi-generator/issues/8441

Suggest a fix/enhancement

N/A

Reproduce the reported NameError with the cli-v5.2.0 Docker command, the shown OpenAPI schema, and the Ruby integration spec using HttpClient::Api#get_lpn. Inspect the generated Ruby client for OneOfObjectAObjectB and compare the behavior with related issue #8441; done means establishing whether oneOf is supported and documenting or correcting the observed behavior.