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OpenApi response oneOf, for several response types

See original GitHub issue

Describe the feature

@OpenApiResponse(status = "200", content = @OpenApiContent(from = First.class, type= "application/json")),
                    @OpenApiResponse(status = "200", content = @OpenApiContent(from = Second.class, type= "application/json")),
                    @OpenApiResponse(status = "200", content = @OpenApiContent(from = Third.class, type= "application/json")),

should compile to corresponding oneOf in stead of picking the last item, from swagger.io

responses:
        '200':
          description: A JSON object containing pet information
          content:
            application/json:
              schema:
                oneOf:
                  - $ref: '#/components/schemas/Cat'
                  - $ref: '#/components/schemas/Dog'
                  - $ref: '#/components/schemas/Hamster'

Additional context Until then

                    @OpenApiResponse(status = "200", content = @OpenApiContent(from = First.class, type= "application/json")),
                    @OpenApiResponse(status = "200", content = @OpenApiContent(from = Second.class, type= "application/json")),
                    @OpenApiResponse(status = "200", content = @OpenApiContent(from = Third.class, type= "application/json")),
                    @OpenApiResponse(status = "200", content = @OpenApiContent(from = PlaceHolder.class, type= "application/json"))

class PlaceHolder  {}

and custom ToJSONMapper (replace with it -> JacksonToJsonMapper.INSTANCE.map(it).replaceAll(…).replaceFirst(…))

            String yaml = Yaml.pretty().writeValueAsString(openApi);
            return yaml.replaceAll("\n(\\s+)(.+)/PlaceHolder'\n", "\n$1oneOf:\n  $1- $2/First'\n  $1- $2/Second'\n  $1- $2/Third'\n").replaceFirst("\\s+PlaceHolder:\n\\s+type: object","");