XML Attribute in OpenAPI

openapi.yml

openapi: 3.0.1
info:
  version: 1.1.1
  title: XML attributes
paths:
  /foo:
    get:
      responses:
        default:
          description: ok
          content:
            application/xml:
              schema:
                $ref: '#/components/schemas/person'
              
components:
  schemas:
    person:
      title: person
      type: object
      properties:
        name: 
          type: string
          example: Josh
          xml:
            attribute: true
        pets:
          type: array
          items:
            type: string
            enum:
            - dog
            - cat