code: public static SharedFlowController getSharedFlow( String sharedFlowClassName, HttpServletRequest request )
      {
          ServletContext servletContext = InternalUtils.getServletContext( request );
          return getSharedFlow( sharedFlowClassName, request, servletContext );
      }
docs: Get the shared flow with the given class name.
  @deprecated Use {@link #getSharedFlow(String, HttpServletRequest, ServletContext)} instead.
  
  @param sharedFlowClassName the class name of the shared flow to retrieve.
  @param request the current HttpServletRequest.
  @return the {@link SharedFlowController} of the given class name which is stored in the user session.