Example of API that has a response that isn't handled properly by openapi-generator's golang client code

test.yaml

swagger: '2.0'
info:
  version: '1'
  title: Test
  description: Test Service
  contact: {}
host: localhost:8080
basePath: /api/v1
schemes:
- http
- https
consumes:
- application/json
produces:
- application/json
tags:
- name: Test
  description: Test
paths:
  "/test":
    get:
      tags:
        - Test
      summary: Test endpoint to return JSON-encoded string
      description: 'Responses are: Value1, Value2, Value3, Value4'
      operationId: TestJSONString
      responses:
        '200':
          description: OK
          schema:
            type: string
        '500':
          description: Internal Server Error
          schema:
            type: string
      deprecated: false