if (cacheResponse != null) {
      if (networkResponse?.code == HTTP_NOT_MODIFIED) {
        val response =
          cacheResponse
            .newBuilder()
            .headers(combine(cacheResponse.headers, networkResponse.headers))
            .sentRequestAtMillis(networkResponse.sentRequestAtMillis)
            .receivedResponseAtMillis(networkResponse.receivedResponseAtMillis)

    retry: Boolean,
  ) = onEvent(RetryDecision(System.nanoTime(), call, exception, retry))

  override fun followUpDecision(
    call: Call,
    networkResponse: Response,
    nextRequest: Request?,
  ) = onEvent(FollowUpDecision(System.nanoTime(), call, networkResponse, nextRequest))

        // The network response also has everything, including the raw gzipped content.
        val networkResponse = chain.proceed(networkRequest)
        assertThat(networkResponse.header("Content-Encoding")).isEqualTo("gzip")
        networkResponse
      }
    client =
      client
        .newBuilder()
        .addNetworkInterceptor(interceptor)
        .build()

   *  * [OkHttpClient.authenticator] must respond to an authorization challenge.
   *
   * @param networkResponse the intermediate response that may require a follow-up request.
   * @param nextRequest the follow-up request that will be made. Null if no follow-up will be made.
   */
  open fun followUpDecision(
    call: Call,
    networkResponse: Response,
    nextRequest: Request?,
  ) {
  }

  override fun retryDecision(
    call: Call,
    exception: IOException,
    retry: Boolean,
  ) {
    logWithTime("retryDecision")
  }

  override fun followUpDecision(
    call: Call,
    networkResponse: Response,
    nextRequest: Request?,
  ) {
    logWithTime("followUpDecision")
  }

  private fun logWithTime(message: String) {
    val startNs = startNs
    val timeMs =

    val body: ResponseBody = response.body
    val builder: Response.Builder = response.newBuilder()
    val redirect: Boolean = response.isRedirect
    val networkResponse: Response? = response.networkResponse
    val cacheResponse: Response? = response.cacheResponse
    val priorResponse: Response? = response.priorResponse
    val challenges: List<Challenge> = response.challenges()

    val exception: IOException,
    val retry: Boolean,
  ) : CallEvent()

  data class FollowUpDecision(
    override val timestampNs: Long,
    override val call: Call,
    val networkResponse: Response,
    val nextRequest: Request?,
  ) : CallEvent()

          println("Response 1 response:          $it")
          println("Response 1 cache response:    ${it.cacheResponse}")
          println("Response 1 network response:  ${it.networkResponse}")
          return@use it.body!!.string()
        }

        val response2Body = client.newCall(request).execute().use {
          if (!it.isSuccessful) throw IOException("Unexpected code $it")

          assertNotNull(it.networkResponse)

          assertEquals(3, it.cacheControl.maxAgeSeconds)
          assertTrue(it.cacheControl.isPublic)
        }

      client
        .newCall(request)
        .execute()
        .use {
          assertEquals(200, it.code)
          assertNotNull(it.cacheResponse)
          assertNull(it.networkResponse)
        }

      // Use the request headers sent over the network, since that's what the response varies on.
      // Otherwise OkHttp-supplied headers like "Accept-Encoding: gzip" may be lost.
      val requestHeaders = networkResponse!!.request.headers
      val responseHeaders = headers
      return varyHeaders(requestHeaders, responseHeaders)
    }

    /**