code: public static void removeSharedFlow( String sharedFlowClassName, HttpServletRequest request,
                                           ServletContext servletContext )
      {
          StorageHandler sh = Handlers.get( servletContext ).getStorageHandler();
          HttpServletRequest unwrappedRequest = unwrapMultipart( request );
          RequestContext rc = new RequestContext( unwrappedRequest, null );
          String attrName = ScopedServletUtils.getScopedSessionAttrName(InternalConstants.SHARED_FLOW_ATTR_PREFIX
                                                                        + sharedFlowClassName, request);
          sh.removeAttribute(rc, attrName);
      }
docs: Destroy the current {@link SharedFlowController} of the given class name.
  @param sharedFlowClassName the class name of the current SharedFlowController to destroy.
  @param request the current HttpServletRequest.