*/
protected String getVersion(URL url) {
if ("jar".equals(url.getProtocol())) {
try {
FileManager fileManager = ServletActionContext.getContext().getInstance(FileManagerFactory.class).getFileManager();
JarFile jarFile = new JarFile(new File(fileManager.normalizeToFileProtocol(url).toURI()));
Manifest manifest = jarFile.getManifest();
if (manifest != null) {
String version = manifest.getMainAttributes().getValue("Bundle-Version");
if (StringUtils.isNotBlank(version)) {
return getVersionFromString(version);