RequestMappingHandlerMapping over DefaultAnnotationHandlerMapping

I am reading Spring Framework Specification 3.1.1.

In section 16.3.2.1 New Support Classes for @RequestMapping methods in Spring MVC 3.1, it mentions that with new support classes,

"For once a HandlerInterceptor or a HandlerExceptionResolver can now expect the Object-based handler to be a HandlerMethod, which allows them to examine the exact method, its parameters and associated annotations. The processing for a URL no longer needs to be split across different controllers." Can someone please help me in understanding the last sentence which says "The processing for a URL no longer needs to be split across different controllers"

Appreciate your help.

Thanks HD