* @return name of the project stage or <code>null</code>
*/
private String getProjectStageFromLocators() {
// try to locate web.xml
WebResourceLocator webResourceLocator = new WebResourceLocator();
URL webXmlLocation = webResourceLocator.getWebResourceUrl("/WEB-INF/web.xml");
// try to parse the web.xml if the locator returned a result
if (webXmlLocation != null) {
String projectStage = parseWebXml(webXmlLocation);