docs: public ServerWebExchangeLimiterBuilder partitionByPathInfo(
  			Function<String, String> pathToGroup) {
  		return partitionResolver(exchange -> {
  			// TODO: pathWithinApplication?
  			String path = exchange.getRequest().getPath().contextPath().value();
  			return Optional.ofNullable(path).map(pathToGroup).orElse(null);
  		});
  	}