Example OpenAPI specification for inline model bug reproduction

openapi.yaml

openapi: "3.0.0"
info:
  version: 1.0.0
  title: Swagger Petstore
  license:
    name: MIT
servers:
  - url: http://petstore.swagger.io/v1
paths:
  /pets:
    get:
      summary: List all pets
      operationId: listPets
      tags:
        - pets
      parameters:
        - $ref: '#/components/parameters/pageOffset'
        - $ref: '#/components/parameters/pageSize'
      responses:
        '200':
          description: A paged array of pets
          content:
            application/json:    
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/Pet'
                  page:
                    $ref: '#/components/schemas/PaginationEnvelope/properties/page'
                  pages:
                    $ref: '#/components/schemas/PaginationEnvelope/properties/pages'
                  total:
                    $ref: '#/components/schemas/PaginationEnvelope/properties/total'
        default:
          description: unexpected error
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/Error"
components:
  parameters:
    pageOffset:
      name: page
      in: query
      description: The page of a collection.
      required: false
      schema:
        type: integer
    pageSize:
      name: per_page
      in: query
      description: Number of items to return per page.
      required: false
      schema:
        type: integer
  schemas:
    PaginationEnvelope:
      type: object
      title: Paginated response template type
      required:
        - pages
        - page
        - total
        - data
      properties:
        pages:
          type: integer
          description: Number of pages available in the collection
          readOnly: true
        page:
          type: integer
          description: Current page number
          readOnly: true
        total:
          type: integer
          description: Total number of items in the collection
          readOnly: true
        data:
          type: array
          description: Array of objects with the results of the current page
          readOnly: true
          items:
            type: object
    Pet:
      required:
        - id
        - name
      properties:
        id:
          type: integer
          format: int64
        name:
          type: string
        tag:
          type: string
    Error:
      required:
        - code
        - message
      properties:
        code:
          type: integer
          format: int32
        message:
          type: string