public HolidayEndpoint(HumanResourceService humanResourceService)
throws JDOMException, XPathFactoryConfigurationException,
XPathExpressionException {
this.humanResourceService = humanResourceService;
Namespace namespace = Namespace.getNamespace("hr", NAMESPACE_URI);
XPathFactory xPathFactory = XPathFactory.instance();
this.startDateExpression = xPathFactory.compile("//hr:StartDate",
Filters.element(), null, namespace);