val part = multipartReader.nextPart() ?: break
        process(part.headers, part.body)
      }
    }
    ```

 *  New: `MediaType.parameter()` gets a parameter like `boundary` from a media type like
    `multipart/mixed; boundary="abc"`.

 *  New: `Authenticator.JAVA_NET_AUTHENTICATOR` forwards authentication requests to
    `java.net.Authenticator`. This obsoletes `JavaNetAuthenticator` in the `okhttp-urlconnection`

    mockWebServer.close()
  }

  @Test
  fun multipartBody() {
    val multipartBody: MultipartBody = MultipartBody.Builder().build()
    val type: MediaType = multipartBody.type
    val boundary: String = multipartBody.boundary
    val size: Int = multipartBody.size
    val parts: List<MultipartBody.Part> = multipartBody.parts
    val part: MultipartBody.Part = multipartBody.part(0)

    than 63 characters between dots), and empty labels.
 *  New: Don't include the `Content-Length` header in multipart bodies. Servers must delimit
    OkHttp's request bodies using the boundary only. (This change makes OkHttp more consistent with
    browsers and other HTTP clients.)
 *  New: Drop the `tunnelProxy` argument in `MockWebServer.useHttps()`. This change only impacts

	public static final field PARALLEL Lokhttp3/MediaType;
	public final fun -deprecated_boundary ()Ljava/lang/String;
	public final fun -deprecated_parts ()Ljava/util/List;
	public final fun -deprecated_size ()I
	public final fun -deprecated_type ()Lokhttp3/MediaType;
	public final fun boundary ()Ljava/lang/String;
	public fun contentLength ()J
	public fun contentType ()Lokhttp3/MediaType;