protected HttpResponse executeCreateSessionRequest() throws Exception {
    String url = "http://" + host + ":" + port + "/wd/hub/session";
    return executeRequestWithPayload(url, HttpMethod.POST, getCapabilityPayload().toString());
  }
Configuring AndroidServlet to use special test handler.
selendroid-server/src/test/java/io/selendroid/server/BaseTest.java