anyof-asyncapi.yml

asyncapi: 3.1.0
info:
  title: AnyOf example
  version: 1.0.0
channels:
  test:
    address: test
    messages:
      testMessages:
        $ref: '#/components/messages/testMessages'
operations:
  test:
    action: receive
    channel:
      $ref: '#/channels/test'
    messages:
      - $ref: '#/channels/test/messages/testMessages'
components:
  messages:
    testMessages:
      payload:
        anyOf:
          - $ref: '#/components/schemas/objectWithKey'
          - $ref: '#/components/schemas/objectWithKey2'
  schemas:
    objectWithKey:
      type: object
      properties:
        key:
          type: string
          additionalProperties: false
    objectWithKey2:
      type: object
      properties:
        key2:
          type: string