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: lib.rs
    path of file: ./repos/rustdesk/libs/virtual_display/dylib/src
    
    the code of the file until where you have to start completion: #[cfg(windows)]
pub mod win10;
use hbb_common::ResultType;
#[cfg(windows)]
use hbb_common::{bail, lazy_static};
#[cfg(windows)]
use std::path::PathBu
    
pub fn download_driver() -> ResultType<()> {
    #[cfg(windows)]
    let _download_url = win10::DRIVER_DOWNLOAD_URL;
    #[cfg(target_os = "linux")]
    let _download_url = "";

    // process download and report progress

    Ok(())
}