}
            },
          ),
        )
        .sslSocketFactory(sslSocketFactory, handshakeCertificates.trustManager)
        .build()

    server.enqueue(MockResponse(body = "abc1"))
    server.enqueue(MockResponse(body = "abc2"))

    val request = Request(server.url("/"))

    client.newCall(request).execute().use { response ->
      assertEquals(200, response.code)
    }

class DevServer {
  val handshakeCertificates = TlsUtil.localhost()

  val server =
    MockWebServer().apply {
      useHttps(handshakeCertificates.sslSocketFactory(), false)

      enqueue(
        MockResponse()
          .setResponseCode(HTTP_MOVED_TEMP)
          .setHeader("Location", "https://www.google.com/robots.txt"),
      )
    }

  val clientCertificates =

 */
package okhttp3

import okio.Timeout

open class FailingCall : Call {
  override fun request(): Request = error("unexpected")

  override fun execute(): Response = error("unexpected")

  override fun enqueue(responseCallback: Callback): Unit = error("unexpected")

  override fun cancel(): Unit = error("unexpected")

  override fun isExecuted(): Boolean = error("unexpected")

[2020-01-01 00:00:00] << 0x00000003     0 DATA          END_STREAM
[2020-01-01 00:00:00] << 0x00000000     8 GOAWAY
[2020-01-01 00:00:05] << 0x00000000     8 GOAWAY
```

### Task Runner Logging 

This logs task enqueues, starts, and finishes.

```
[2020-01-01 00:00:00] Q10000 scheduled after   0 µs: OkHttp ConnectionPool
[2020-01-01 00:00:00] Q10000 starting              : OkHttp ConnectionPool

  val clientRule = OkHttpClientTestRule()

  @Test
  fun passingTest() {
    assertThat("hello").isEqualTo("hello")
  }

  @Test
  fun testMockWebServer(server: MockWebServer) {
    server.enqueue(MockResponse(body = "abc"))

    val client = clientRule.newClient()

    client.newCall(Request(url = server.url("/"))).execute().use {
      assertThat(it.body.string()).isEqualTo("abc")
    }
  }

  @Test

    return Executors::class.java.getMethod("newVirtualThreadPerTaskExecutor").invoke(null) as ExecutorService
  }

  @Test
  fun testRequest() {
    server.enqueue(MockResponse())

    val request = Request(server.url("/"))

    client.newCall(request).execute().use {
      assertThat(it.code).isEqualTo(200)
    }
  }

  @Test
  fun testIfSupported() {

import javax.annotation.CheckForNull;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Serializes execution of tasks, somewhat like an "asynchronous {@code synchronized} block." Each
 * {@linkplain #submit enqueued} callable will not be submitted to its associated executor until the
 * previous callable has returned -- and, if the previous callable was an {@link AsyncCallable}, not

    responses.add(RecordedResponse(call.request(), response, null, body, null))
    (this as Object).notifyAll()
  }

  /**
   * Returns the recorded response triggered by `request`. Throws if the response isn't
   * enqueued before the timeout.
   */
  @Synchronized
  fun await(url: HttpUrl): RecordedResponse {
    val timeoutMillis = TimeUnit.NANOSECONDS.toMillis(System.nanoTime()) + TIMEOUT_MILLIS
    while (true) {

	utilruntime.HandleError(fmt.Errorf("%v failed with : %v", dsKey, err))
	c.queue.AddRateLimited(dsKey)

	return true
}

// Enqueue a method to allow separate control loops to cause the certificate controller to trigger and read content.
func (c *DynamicServingCertificateController) Enqueue() {
	c.queue.Add(workItemKey)

      .build();

  public void run() throws Exception {
    Request washingtonPostRequest = new Request.Builder()
        .url("https://www.washingtonpost.com/")
        .build();
    client.newCall(washingtonPostRequest).enqueue(new Callback() {
      @Override public void onFailure(Call call, IOException e) {
      }

      @Override public void onResponse(Call call, Response response) throws IOException {