@Test
public void testServiceClasses_noMatchingTag()
    throws ParserConfigurationException, IOException, SAXException, XPathExpressionException {

  WebXml webxml = new WebXmlBuilder()
      .servlet("HelloServlet", "com.example.Hello", "com.test.HelloService")
      .servletMapping("HelloServlet", "/hello")
      .systemServiceServletMapping().build();
  List<String> serviceClasses = webxml.endpointsServiceClasses();
  Assert.assertEquals("Expecting nothing, found : " + serviceClasses, 0, serviceClasses.size());
}