code: public static void loadSharedFlow(ServletRequest request, Map/*<String, SharedFlowController>*/ sharedFlows) {
          if(sharedFlows != null)
              request.setAttribute(SHARED_FLOW_IMPLICIT_OBJECT_KEY, sharedFlows);
      }
docs: Load the shared flow into the request.
  @param request the request
  @param sharedFlows the current shared flows