private ServletHost servletHost;
public void start(ExtensionPointRegistry registry) {
encodingRegistry = new DefaultEncodingRegistry();
servletHost = new ExtensibleServletHost(registry.getExtensionPoint(ServletHostExtensionPoint.class));
AssemblyFactory assemblyFactory = new DefaultAssemblyFactory();
PolicyFactory policyFactory = new DefaultPolicyFactory();
DefaultNotificationBindingFactory bindingFactory = new DefaultNotificationBindingFactory();
bindingProcessor = new NotificationBindingProcessor(assemblyFactory, policyFactory, bindingFactory);