openapi: 3.0.0
info:
  title: API
  version: '1.0'
paths:
  /api/endpoint:
    get:
      operationId: 4d13477a1abdf05116ad243f8d869c0a
      responses:
        '200':
          description: 'successful operation'
components:
  schemas:
    SomeParent: {  }
    Child:
      allOf:
        -
          $ref: '#/components/schemas/SomeParent'
