[BUG] Description when using oneOf, I get non-compiled code. Kotlin.

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
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Description

openapi-generator version

OpenAPI declaration file content or url

Generation Details

definitipns.yaml:

openapi: 3.0.0

info:
  description: Fintech Risk Backend Antifraud System
  title: Fintech Risk Backend Antifraud System
  version: '1.0'
paths: { }

components:
  schemas:
    TestResponse:
      oneOf:
        - "$ref": "#/components/schemas/O1"
        - "$ref": "#/components/schemas/O2"
        - "$ref": "#/components/schemas/O3"

    O1:
      type: string
    O2:
      type: object
      properties:
        kek:
          type: string
        lol:
          type: string
      required:
        - kek
        - lol
    O3:
      type: array
      items:
        type: string

api.yaml:

openapi: 3.0.0
info:
  description: Fintech Risk Backend Antifraud System
  title: Fintech Risk Backend Antifraud System
  version: '1.0'

paths:
  /risk/calculation/status:
    post:
      description: |
        Запрос на проверку завершения запроса
      tags:
        - test-client
      operationId: test
      responses:
        '200':
          description: Состояние заявки
          content:
            application/json:
              schema:
                '$ref': './definitions.yaml#/components/schemas/TestResponse'

/**
*

• @param kek
• @param lol
  */

data class O1 (

@field:JsonProperty("kek")
val kek: kotlin.String,

@field:JsonProperty("lol")
val lol: kotlin.String
):TestResponse

data class TestResponse (

@field:JsonProperty("kek")
val kek: kotlin.String,

@field:JsonProperty("lol")
val lol: kotlin.String
)

TestResponse is final. Don't implement.

Steps to reproduce

Related issues/PRs

Suggest a fix

Reproduce generation with the provided definitions.yaml and api.yaml, then inspect the generated Kotlin O1 and TestResponse declarations. Compare the oneOf schema with the output, focusing on why TestResponse is final and does not compile; done means the generated Kotlin for this specification compiles and correctly represents the alternatives.