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: simple_window.rs
    path of file: ./repos/wayland-rs/wayland-client/examples
    
    the code of the file until where you have to start completion: use std::{fs::File, os::unix::prelude::AsFd};

use wayland_client::{
    delegate_noop,
    protocol::{
        wl_buffer, wl_compositor, wl_keyboard, wl_registry, wl_seat, wl_shm, wl_shm_pool,
        wl_surface,
    },
    Connection, Dispatch, QueueHandle, WEnum,
};

use wayland_p
    
fn main() {
    let conn = Connection::connect_to_env().unwrap();

    let mut event_queue = conn.new_event_queue();
    let qhandle = event_queue.handle();

    let display = conn.display();
    display.get_registry(&qhandle, ());

    let mut state = State {
        running: true,
        base_surface: None,
        buffer: None,
        wm_base: None,
        xdg_surface: None,
        configured: false,
    };

    println!("Starting the example window app, press <ESC> to quit.");

    while state.running {
        event_queue.blocking_dispatch(&mut state).unwrap();
    }
}