/** * Default handler for a flowManager which simply add it to the MAV using {@link * ConsumerAbstractController#FLOW_MANAGER_ID_KEY} * * @param mav * @param fm * @throws IllegalArgumentException if flow manager is null */ protected void handleFlowManager(ModelAndView mav, FlowManager fm) throws IllegalArgumentException { if (fm == null) { throw new IllegalArgumentException("Unable to locate the FlowManager ID:" + fm.getId()); } mav.addObject(FLOW_MANAGER_ID_KEY, fm); }