openapi: 3.0.0
info:
  title: ACME
  version: 1.0.0

paths:
  /api:
    get:
      responses:
        '200':
          description: JSON Array of products
          content:
            application/json:
              schema:
                oneOf:
                - type: object
                  properties:
                    name1:
                      type: string
                - type: object
                  properties:
                    name2:
                      type: string