code: @Override
      public Iterable<Tag> httpRequestTags(@Nullable HttpServletRequest request,
                                           @Nullable HttpServletResponse response,
                                           @Nullable Object handler,
                                           @Nullable Throwable ex) {
          return Arrays.asList(WebMvcTags.method(request), WebMvcTags.uri(request, response),
              WebMvcTags.exception(ex), WebMvcTags.status(response), WebMvcTags.outcome(response));
      }
docs: Supplies default tags to the Web MVC server programming model.
  
  @param request  The HTTP request.
  @param response The HTTP response.
  @param ex       The current exception, if any
  @return A set of tags added to every Spring MVC HTTP request.