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: mod.rs
    path of file: ./repos/ninja/crates/openai/src/context/arkose
    
    the code of the file until where you have to start completion: pub mod har;
pub mod version;

use self::version::ArkoseVersion;
use crate::arkose::Type;
use crate::homedir::home_dir;
use moka::sync::Cache;
use native_db::{Database, DatabaseBuilder};
use std::path::PathBuf;
use std::sync::{Arc, OnceLock};
use std::time::Duration;
use tokio::time::interval;
use tracing::{info, warn};

use super::WORKER_DIR;

const INTERVAL_
    
    async fn upgrade(&self) {
        // Auth
        self.insert_version(Type::Auth).await;
        // GPT-4
        self.insert_version(Type::GPT4).await;
        // GPT-3.5
        self.insert_version(Type::GPT3).await;
        // Platform
        self.insert_version(Type::Platform).await;
        // SignUp
        self.insert_version(Type::SignUp).await;

        if let Some(v) = self.version(Type::Auth) {
            info!("Arkose version: {}", v.version());
        }
    }