* bandwidth.
 *
 * The Cache instance must have exclusive access to the [directory], since the internal data structures
 * may cause corruption or runtime errors if not. It may however be shared amongst multiple OkHttpClient
 * instances.
 *
 * ## Cache Optimization
 *
 * To measure cache effectiveness, this class tracks three statistics:
 *

     * [EventListener] instance will be used during the lifecycle of [call].
     *
     * This method is invoked after [call] is created. See [OkHttpClient.newCall].
     *
     * **It is an error for implementations to issue any mutating operations on the [call] instance
     * from this method.**
     */
    fun create(call: Call): EventListener
  }

  @RegisterExtension
  val platform = PlatformRule()

  @RegisterExtension
  val clientTestRule = OkHttpClientTestRule()
  private lateinit var server: MockWebServer
  private lateinit var client: OkHttpClient
  private lateinit var rootCa: HeldCertificate
  private lateinit var certificate: HeldCertificate
  private val dns = FakeDns()
  private lateinit var url: HttpUrl
  private lateinit var serverIps: List<InetAddress>

import okhttp3.Headers.Companion.headersOf
import okhttp3.HttpUrl.Companion.toHttpUrl
import okhttp3.Interceptor
import okhttp3.MediaType
import okhttp3.MediaType.Companion.toMediaType
import okhttp3.OkHttpClient
import okhttp3.OkHttpClientTestRule
import okhttp3.Protocol
import okhttp3.RecordingCookieJar
import okhttp3.RecordingHostnameVerifier
import okhttp3.Request
import okhttp3.RequestBody
import okhttp3.Response

  private lateinit var server: MockWebServer
  private lateinit var server2: MockWebServer
  private val handshakeCertificates = platform.localhostHandshakeCertificates()
  private lateinit var client: OkHttpClient
  private lateinit var cache: Cache
  private val cookieManager = CookieManager()

  @BeforeEach
  fun setUp(
    @MockWebServerInstance(name = "1") server: MockWebServer,