mockWebServer: MockWebServer,
  ) {
    setUp(protocol, mockWebServer)
    val body = repeat('y', 2048)
    server.enqueue(
      MockResponse.Builder()
        .body(body)
        .throttleBody(1024, 1, TimeUnit.SECONDS)
        .build(),
    ) // Slow connection 1KiB/second.
    server.enqueue(
      MockResponse(body = body),
    )
    client =
      client.newBuilder()