You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: main.rs
    path of file: ./repos/sauron/examples/ssr-forms/src
    
    the code of the file until where you have to start completion: #![deny(warnings)]
use chrono::Local;
use sauron::{html::*, *};
use serde_derive::{Deserialize, Serialize};
use std::net::{IpAddr, Ipv4Addr, SocketAddr};
use warp::{http::Response, Filter};

#[derive(Debug, Deserialize, Serialize)]
pub struct FormData {
    name: String,
    biography: String,
    thought: Op
    
async fn main() {
    let submission = warp::get()
        .and(warp::path("submission"))
        .and(warp::query::<FormData>())
        .map(|form_data: FormData| {
            println!("form data: {:#?}", form_data);
            let mut buffer = String::new();
            let node = view(Some(form_data));
            node.render(&mut buffer).expect("must render");
            Response::builder().body(buffer)
        });

    let index = warp::get().map(|| {
        let mut buffer = String::new();
        let node = view(None);
        node.render(&mut buffer).expect("must render");
        Response::builder().body(buffer)
    });

    let socket = SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 4040);
    println!("serve at http://{}:{}", socket.ip(), socket.port());
    warp::serve(submission.or(index)).run(socket).await;
}