call: Call,
          response: Response,
        ) {
          val bytes = response.body.byteStream()
          assertThat(bytes.read()).isEqualTo('a'.code)
          assertThat(bytes.read()).isEqualTo('b'.code)
          assertThat(bytes.read()).isEqualTo('c'.code)

          // This request will share a connection with 'A' cause it's all done.

        .code(finalResponseCode)
        .body("ABCDE")
        .addInformationalResponse(MockResponse(initialResponseCode))
    server.enqueue(builder.build())
    server.start()
    val request =
      Request.Builder()
        .url(server.url("/"))
        .build()
    val response = client.newCall(request).execute()
    assertThat(response.code).isEqualTo(finalResponseCode)