multipart.addPart(
        headersOf("Content-Length", "13"),
        "Hello, World!".toRequestBody(null),
      )
    }
  }

  @Test
  @Throws(IOException::class)
  fun partAccessors() {
    val body =
      MultipartBody
        .Builder()
        .addPart(headersOf("Foo", "Bar"), "Baz".toRequestBody(null))
        .build()
    assertThat(body.parts.size).isEqualTo(1)