# https://github.com/OAI/OpenAPI-Specification/issues/1961#issuecomment-506026142
openapi: 3.0.2
info:
  title: My API
  version: 1.0.0
x-extension-1: Extension1
x-extension-2: Extension2
X-EXTENSION: Invalid because of Uppercase X-
xyz-extension: invalid extension
paths:
  /foo:
    $ref: 'path-items.yaml#/~1foo'
  /bar:
    $ref: 'path-items.yaml#/~1bar'
components:
  responses:
    Bar:
      description: A bar
      content:
        application/json:
          schema: { type: object }
