help!

help.md

1. Is there some way to use HttpClient in Downloader without making it public?
2. Is super::... the right way to do this?

// downloader/downloader.rs
use super::http_client::HttpClient;
pub struct Downloader {
    client: HttpClient;
}

// downloader/http_client.rs
pub struct HttpClient {}

// downloader/mod.rs
mod http_client;
mod downloader;
pub use downloader::Downloader;