openapi: 3.1.0
info:
  title: upgrade-test
  version: '1.0'
paths:
  /items:
    get:
      parameters:
        - in: query
          name: q
          schema:
            type: [string, "null"]
      responses:
        '200':
          description: ok
          content:
            application/json:
              schema:
                type: integer
                exclusiveMinimum: 0
                examples: [7]
