code: public boolean handle(ServerHttpRequest request, ServerHttpResponse response)
  			throws IOException {
  		for (HandlerMapper mapper : this.mappers) {
  			Handler handler = mapper.getHandler(request);
  			if (handler != null) {
  				handle(handler, request, response);
  				return true;
  			}
  		}
  		return false;
  	}
docs: Dispatch the specified request to an appropriate {@link Handler}.
  @param request the request
  @param response the response
  @return {@code true} if the request was dispatched
  @throws IOException in case of I/O errors