openapi: '3.0.1'
info:
  title: 'some thing'
  version: 'v0'
paths:
  /example:
    get:
      requestBody:
      responses:
        200:
          description: 'some thing'
          content:
            application/json:
              schema:
                type: object
                allOf:
                  - allOf:
                      - type: object
                        properties:
                          x:
                            type: string
                  - type: object
                    properties:
                      a:
                        type: string
                  - type: object
                    properties:
                      b:
                        type: number
                      c:
                        type: string
                  - type: object
                    properties:
                      d:
                        allOf:
                          - type: 'object'
                            properties:
                              a:
                                type: string
                          - type: 'object'
                            properties:
                              b:
                                type: string
                      e:
                        type: string