code: public static HttpServletResponse getHttpServletResponseFromExternalWebflowContext() {
          val servletExternalContext = (ServletExternalContext) ExternalContextHolder.getExternalContext();
          if (servletExternalContext != null) {
              return (HttpServletResponse) servletExternalContext.getNativeResponse();
          }
          return null;
      }
docs: Gets the http servlet response from the current servlet context.
  
  @return the http servlet response