val response1 = client.newCall(request1).execute()
    assertThat(response1.body.string()).isEqualTo("ABC")
    val recordedRequest1 = server.takeRequest()
    assertThat(recordedRequest1.requestLine).isEqualTo("GET /foo HTTP/1.1")
    assertThat(recordedRequest1.connectionIndex).isEqualTo(0)
    assertThat(recordedRequest1.exchangeIndex).isEqualTo(0)
    val request2 = Request.Builder().url(server.url("/bar")).build()

    these accessors will throw an `IllegalStateException` if the service has not yet been started.

 *  Breaking: Rename `RecordedRequest.path` to `RecordedRequest.target`. (This property is
    _sometimes_ a path, but it can also be a path and query, or a full URL.)

 *  Breaking: Decompose the `RecordedRequest.requestLine` into three properties, `method`, `target`,

 *  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.