Exploding encoding type

openapi.oas30.yml

openapi: 3.0.4
info:
  title: Encoding
  version: '1.0'
paths:
  /foo/post:
    post:
      requestBody: 
        content:
            multipart/form-data: 
              schema:
                $ref: '#/components/schemas/PostBody'
              encoding: 
                intArrProp:
                    explode: true
      responses:
        '200':
          description: OK
components:
  schemas:
    PostBody:
      type: object
      properties:
        content:
          type: string
          nullable: true
        intArrProp:
          type: array
          items:
            type: integer
            format: int32
          nullable: true
      additionalProperties: false