Serialize nested properties as form-data with swagger-php

Question

This is how Encoding Object Example is done in OpenApi https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.0.md

requestBody:
  content:
    multipart/mixed:
      schema:
        type: object
        properties:
          id:
            # default is text/plain
            type: string
            format: uuid
          address:
            # default is application/json
            type: object
            properties: {}
          historyMetadata:
            # need to declare XML format!
            description: metadata in XML format
            type: object
            properties: {}
          profileImage:
            # default is application/octet-stream, need to declare an image type only!
            type: string
            format: binary
      encoding:
        historyMetadata:
          # require XML Content-Type in utf-8 encoding
          contentType: application/xml; charset=utf-8
        profileImage:
          # only accept png/jpeg
          contentType: image/png, image/jpeg
          headers:
            X-Rate-Limit-Limit:
              description: The number of allowed requests in the current period
              schema:
                type: integer

I'm trying to achive the same thing but with swagger-php. What I don't know is how to pass encodings in @OA\MediaType to encode the test property as multipart/form-data because by default is encoded as application/json

EX:

 * @OA\Post(
 *     path="/admin/test",
 *     summary="Create new Test",
 *     description="Will attempt to create a new Test",
 *     tags={"Admin Test"},
 *     @OA\RequestBody(
 *          @OA\MediaType(
 *              mediaType="multipart/form-data",
 *              encoding={}
 *              @OA\Schema(
 *                  type="object",
 *                  @OA\Property(
 *                      property="test",
 *                      type="object",
 *                      description="test"
 *                      ref="#/components/schemas/MyTestSchema"
 *                  )
 *              )
 *      )

They have some examples here:

https://github.com/zircote/swagger-php/tree/master/Examples

but I didn't found any example regarding encoding

Inside here the field is defined https://github.com/zircote/swagger-php/blob/master/src/Annotations/MediaType.php

   /**
     * A map between a property name and its encoding information.
     * The key, being the property name, must exist in the schema as a property.
     * The encoding object shall only apply to requestBody objects when the media type is multipart or application/x-www-form-urlencoded.
     */
    public $encoding = UNDEFINED;

I've tried encoding={"recommended"={"contentType"="multipart/form-data"}} but it's useless.

Answer 1

I think the only solution is putting all the fields:

 * @OA\Post(
 *     path="/admin/test",
 *     summary="Create new Test",
 *     description="Will attempt to create a new Test",
 *     tags={"Admin Test"},
 *     @OA\RequestBody(
 *          @OA\MediaType(
 *              mediaType="multipart/form-data",
 *              @OA\Schema(
 *                  @OA\Property(
 *                      property="test[name]",
 *                      type="string",
 *                      description="name"
 *                  ),
 *                  @OA\Property(
 *                      property="test[desc]",
 *                      type="string",
 *                      description="description"
 *                  )
 *              )
 *          )
 *      )