code: public Object initModelIF(EventModel em, ModelForm form, ServletContext scontext) throws Exception {
  		Object result = null;
  		try {
  			HandlerMetaDef hm = this.modelMapping.getHandlerMetaDef();
  			String serviceName = hm.getServiceRef();
  			Debug.logVerbose("[JdonFramework] construct the CRUD method for the service:" + serviceName, module);
  			MethodMetaArgs methodMetaArgs = maFactory.createinitMethod(hm, em);
  			AppContextWrapper acw = new ServletContextWrapper(scontext);
  			Service service = serviceFacade.getService(acw);
  			if (methodMetaArgs != null)
  				result = service.execute(serviceName, methodMetaArgs, acw);
  		} catch (Exception e) {
  			Debug.logError("[JdonFramework] initModel error: " + e, module);
  			throw new Exception(e);
  		}
  		return result;
  	}
docs: if your application need initialize the ModelForm, this method is a
  option. extends thie method.