.addHeader("content-type: text/plain")
        .addHeader("content-length", "3")
        .build(),
    )
    val sentAt = System.currentTimeMillis()
    val recordedResponse = executeSynchronously("/", "User-Agent", "SyncApiTest")
    val receivedAt = System.currentTimeMillis()
    recordedResponse.assertCode(200)
      .assertSuccessful()
      .assertHeaders(
        Headers.Builder()

   * served.
   */
  @Test
  fun retainServedDateFormat() {
    // Serve a response with a non-standard date format that OkHttp supports.
    val lastModifiedDate = Date(System.currentTimeMillis() + TimeUnit.HOURS.toMillis(-1))
    val servedDate = Date(System.currentTimeMillis() + TimeUnit.HOURS.toMillis(-2))
    val dateFormat: DateFormat = SimpleDateFormat("EEE dd-MMM-yyyy HH:mm:ss z", Locale.US)