如何让Vert.x返回404响应？

HttpServer server = vertx.createHttpServer();

server.requestHandler(request -> {
    // 在这里编写请求处理逻辑
});

request.response()
    .setStatusCode(404)
    .end("Not Found");

import io.vertx.core.Vertx;
import io.vertx.core.http.HttpServer;

public class Main {
    public static void main(String[] args) {
        Vertx vertx = Vertx.vertx();

        HttpServer server = vertx.createHttpServer();

        server.requestHandler(request -> {
            // 判断是否返回 404 响应
            if (request.path().equals("/notfound")) {
                request.response()
                    .setStatusCode(404)
                    .end("Not Found");
            } else {
                // 处理其他请求
                request.response()
                    .end("Hello, World!");
            }
        });

        server.listen(8080);
    }
}