and is only suitable for experimental use.
 *  New: MockWebServer now supports client authentication (mutual TLS). Call `requestClientAuth()`
    to permit an optional client certificate or `requireClientAuth()` to require one.
 *  New: `RecordedRequest.getHandshake()` returns the HTTPS handshake of a request sent to
    `MockWebServer`.
 *  Fix: Honor the `MockResponse` header delay in MockWebServer.

    mockWebServer.useHttps(SSLSocketFactory.getDefault() as SSLSocketFactory, false)
    mockWebServer.noClientAuth()
    mockWebServer.requestClientAuth()
    mockWebServer.requireClientAuth()
    val request: RecordedRequest = mockWebServer.takeRequest()
    val nullableRequest: RecordedRequest? = mockWebServer.takeRequest(0L, TimeUnit.SECONDS)
    var requestCount: Int = mockWebServer.requestCount