---
swagger: '2.0'
info:
  title: 'fixture 1289'
  version: '1.0'
produces:
  - application/json
paths:
  '/fixture':
    get:
      operationId: op1
      responses:
        '200':
          description: 'erroneous response'
          schema:
            # Expect clean
            $ref: '#/definitions/someIds'

definitions:
  someIds:
    type: string