[BUG][NodeJS-Express-Server ReferenceRequestBodies are not parsed by the controller

Created by: RalphBragg

Bug Report Checklist

Have you provided a full/minimal spec to reproduce the issue?
Have you validated the input using an OpenAPI validator (example)?
[5] What's the version of OpenAPI Generator used?
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What's the actual output vs expected output?
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Description

The NodeJS Express Server generator controller.js does not process reference request bodies. Is there are a way to make it do so?

openapi-generator version

OpenAPI declaration file content or url

   post:
      operationId: organisationsOrganisationIdAuthorisationserversPOST
      parameters:
      - description: The organisation ID
        explode: false
        in: path
        name: OrganisationId
        required: true
        schema:
          $ref: '#/components/schemas/OrganisationId'
        style: simple
      requestBody:
        $ref: '#/components/requestBodies/AuthorisationServerRequest'
      responses:
        "201":
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AuthorisationServer'
          description: Authorisation server response
        "400":
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/BadRequest'
          description: Bad Request
        "401":
          description: Unauthorized
        "404":
          description: Not found
        "406":
          description: Not Acceptable
        "500":
          description: Internal Server Error
        "502":
          description: Bad Gateway
      security:
      - authorizer: []
      summary: Create an Authorisation Server for the given organisation
      tags:
      - Authorisation Servers
      x-eov-operation-handler: controllers/AuthorisationServersController

Command line used for generation

OPENAPI_GENERATOR_VERSION=5.0.0-SNAPSHOT openapi-generator-cli generate -i /TrustFramework.yaml -o ./output -g nodejs-express-server

Steps to reproduce

Generate the server.
Test that GETs function correctly.
Post's fail to process throwing an undefined exception in Controller.js collectRequestParams() const { content } = request.openapi.schema.requestBody; as content is undefined whent the requestbody is a reference.

Related issues/PRs

Suggest a fix

Can reference request bodies be handled