* Response response = eagerClient.newCall(request).execute();
 * ```
 *
 * ## Shutdown Isn't Necessary
 *
 * The threads and connections that are held will be released automatically if they remain idle. But
 * if you are writing a application that needs to aggressively release unused resources you may do
 * so.
 *
 * Shutdown the dispatcher's executor service with [shutdown()][ExecutorService.shutdown]. This will

    server.enqueue(
      MockResponse(
        code = HttpURLConnection.HTTP_UNAUTHORIZED,
        headers = headersOf("www-authenticate", "Basic realm=\"protected area\""),
        body = "Please authenticate.",
      ),
    )
    server.enqueue(
      MockResponse(body = "Successful auth!"),
    )
    val credential = basic("username", "password")
    client =
      client.newBuilder()