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: xmltv_url.rs
    path of file: ./repos/iptv-handler/src/db/src/models
    
    the code of the file until where you have to start completion: use async_trait::async_trait;
use serde::{Deserialize, Serialize};
use sqlx::{query, query
    
    pub async fn get_latest(&self, tx: &mut Connection) -> Result<XmltvUrlModel, Error> {
        let res = query_as!(XmltvUrlModel, "select id, url from xmltv_url",)
            .fetch_one(tx)
            .await;

        res
    }