without-type-object.yaml

openapi: 3.0.0
info:
  version: '1'
  title: 'Test of Multipart Form submission'
  description: 'When using multipart form as the content type, the example rendered is a JSON object'
servers:
  - url: http://httpbin.org
paths:
  /anything:
    post:
      summary: Create an item
      requestBody:
        content:
          multipart/form-data:
            schema:
              # type: object # <-- makes it work
              properties: # Request parts should NOT be rendered as JSON
                image:
                  type: string
                  format: binary
            encoding:
              image:
                contentType: image/png, image/jpeg
        description: The item to create.
        required: true
      responses:
        '201':
          description: Operation completed successfully.