openapi: 3.1.0
info:
  title: OpenAPI 3.1.0 array items oneOf length 1 example
  version: '1'
components:
  schemas:
    Foo:
      type: object
      properties:
        foo:
          type: array
          items:
            oneOf:
              - $ref: '#/components/schemas/Bar'
          maxItems: 2147483647
          minItems: 1
    Bar:
      type: string