  @Test
  public void unwrap() throws Throwable {

    websocketAction(ws -> {
      threadAssertTrue(ws.unwrap(org.vertx.java.core.http.ServerWebSocket.class) instanceof org
        .vertx.java.core.http.ServerWebSocket);
      resume();
    });
    client.connect(new WebSocketAdapter(), URI.create(uri()));
    await();
  }