public void unloadJarFiles() {
        for (JarURLConnection url : cachedJarFiles) {
            try {
                Log.info("Unloading plugin JAR file " + url.getJarFile().getName());
                url.getJarFile().close();
            } catch (Exception e) {
                Log.error("Failed to unload JAR file", e);
            }
        }
    }
Unload any JAR files that have been cached by this plugin
xmppserver/src/main/java/org/jivesoftware/openfire/container/PluginClassLoader.java