code: public BeanDefinitionHolder decorate(Node source,
                                           BeanDefinitionHolder holder,
                                           ParserContext context) {
  
          String beanName = holder.getBeanName();
          BeanDefinitionRegistry registry = context.getRegistry();
          registerPerformanceMonitor(beanName, registry);
          registerInterceptor(source, beanName, registry);
  
          return holder;
      }
docs: Method called by Spring when it encounters the custom jrugged:methods
  attribute. Registers the performance monitor and interceptor.