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/leptos/examples/hackernews_islands_axum/src
    
    the code of the file until where you have to start completion: #[cfg(feature = "ssr")]
#[tokio::main]
async fn main() {
    pub use axum::{routing::get, Router};
    pub use hackernews_islands::fallback::file_and_error_handler;
    use hackernews_islands::*;
    pub use leptos::get_configuration;
    pub use leptos_axum::{generate_route_list, LeptosRoutes};

    let conf = get_configuration(Some("Cargo.toml")).await.unwrap();
    let leptos_options = conf.leptos_options;
    let addr = leptos_options.site_addr;
    let routes = generate_route_list(App);

    // build our application with a route
    let app = Router::new()
        .route("/favicon.ico", get(file_and_error_handler))
        .leptos_routes(&leptos_options, routes, App)
        .fallback(file_and_error_handler)
    
async fn main() {
    pub use axum::{routing::get, Router};
    pub use hackernews_islands::fallback::file_and_error_handler;
    use hackernews_islands::*;
    pub use leptos::get_configuration;
    pub use leptos_axum::{generate_route_list, LeptosRoutes};

    let conf = get_configuration(Some("Cargo.toml")).await.unwrap();
    let leptos_options = conf.leptos_options;
    let addr = leptos_options.site_addr;
    let routes = generate_route_list(App);

    // build our application with a route
    let app = Router::new()
        .route("/favicon.ico", get(file_and_error_handler))
        .leptos_routes(&leptos_options, routes, App)
        .fallback(file_and_error_handler)
        .with_state(leptos_options);

    // run our app with hyper
    // `axum::Server` is a re-export of `hyper::Server`
    println!("listening on {}", addr);
    let listener = tokio::net::TcpListener::bind(&addr).await.unwrap();
    axum::serve(listener, app.into_make_service())
        .await
        .unwrap();
}