val response = call.execute()

    // Body contains nothing.
    assertThat(response.body.bytes().size).isEqualTo(0)
    assertThat(response.body.contentLength()).isEqualTo(0)

    // Content-Length header doesn't exist in a 204 response.
    assertThat(response.header("content-length")).isNull()
    assertThat(response.code).isEqualTo(204)
    val request = server.takeRequest()

     * outgoing HTTP requests.
     *
     * If unset, [no cookies][CookieJar.NO_COOKIES] will be accepted nor provided.
     */
    fun cookieJar(cookieJar: CookieJar) =
      apply {
        this.cookieJar = cookieJar
      }

    /** Sets the response cache to be used to read and write cached responses. */
    fun cache(cache: Cache?) =

	public fun message (Ljava/lang/String;)Lokhttp3/Response$Builder;
	public fun networkResponse (Lokhttp3/Response;)Lokhttp3/Response$Builder;
	public fun priorResponse (Lokhttp3/Response;)Lokhttp3/Response$Builder;
	public fun protocol (Lokhttp3/Protocol;)Lokhttp3/Response$Builder;
	public fun receivedResponseAtMillis (J)Lokhttp3/Response$Builder;
	public fun removeHeader (Ljava/lang/String;)Lokhttp3/Response$Builder;

    peer.acceptFrame() // SYN_STREAM
    peer.acceptFrame() // PING
    peer.sendFrame()
      .headers(false, 3, headerEntries(Header.RESPONSE_STATUS_UTF8, "HTTP/1.1 100"))
    peer.sendFrame()
      .headers(false, 3, headerEntries(Header.RESPONSE_STATUS_UTF8, "HTTP/1.1 200"))
    peer.sendFrame().ping(true, Http2Connection.AWAIT_PING, 0)
    peer.play()

    // Play it back.