sample inputs for https://github.com/OpenAPITools/openapi-generator/pull/16418

form-param-v2.yaml

swagger: "2.0"
info:
  title: dummy
  version: dummy
paths:
  /property:
    post:
      consumes:
        - application/x-www-form-urlencoded
      parameters:
        - in: body
          name: body
          schema:
              $ref: '#/definitions/OuterObject'
      responses:
        '200':
          description: dummy
definitions:
  InnerObject:
    type: object
    properties:
      ghijklm:
        type: string
  OuterObject:
    type: object
    properties:
      abcdef:
        $ref: '#/definitions/InnerObject'

form-param-v3.yaml

openapi: 3.0.1
info:
  title: dummy
  version: dummy
paths:
  /property:
    post:
      requestBody:
        content:
          application/x-www-form-urlencoded:
            schema:
              $ref: '#/components/schemas/OuterObject'
      responses:
        '200':
          description: dummy
          content:
            application/json:
              schema:
                type: string
components:
  schemas:
    InnerObject:
      type: object
      properties:
        ghijklm:
          type: string
    OuterObject:
      type: object
      properties:
        abcdef:
          $ref: '#/components/schemas/InnerObject'