{
throw new IllegalArgumentException("runtimeConfig must mot be null");
}
// set default implementation in constructor
// pragmatic approach, no syncronizing will be needed in get methods
_viewHandler = new JspViewHandlerImpl();
_navigationHandler = new NavigationHandlerImpl();
_actionListener = new ActionListenerImpl();
_defaultRenderKitId = "HTML_BASIC";
_stateManager = new JspStateManagerImpl();
_elContextListeners = new ArrayList<ELContextListener>();