code: public void setCustomArgumentResolvers(
  			List<HandlerMethodArgumentResolver> customArgumentResolvers) {
  		this.customArgumentResolvers.clear();
  		if (customArgumentResolvers != null) {
  			this.customArgumentResolvers.addAll(customArgumentResolvers);
  		}
  	}
docs: Sets the list of custom {@code HandlerMethodArgumentResolver}s that will be used
  after resolvers for supported argument type.
  @param customArgumentResolvers the list of resolvers; never {@code null}.