private Map<String /* extension */, String /* mime-type */> mimeTypes = new ConcurrentHashMap<String, String>();
public ResourceNodePlugin(SitePlugin sp) {
registerDefaultMimeTypes();
sp.registerManageNodeTabFactory(new ManageResourceNodeTabFactory());
sp.registerManageNodeTabFactory(new ImageNodeTabFactory());
sp.registerManageNodeTabFactory(new TextNodeTabFactory());
}