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/bevy/crates/bevy_asset/src/io/file
    
    the code of the file until where you have to start completion: #[cfg(feature = "file_watcher")]
mod file_watcher;

#[cfg(feature = "multi-threaded")]
mod file_asset;
#[cfg(not(feature = "multi-threaded"))]
mod sync_file_asset;

use bevy_utils::tracing::error;
#[cfg(feature = "file_watcher")]
pub use file_wa
    
pub(crate) fn get_base_path() -> PathBuf {
    if let Ok(manifest_dir) = env::var("BEVY_ASSET_ROOT") {
        PathBuf::from(manifest_dir)
    } else if let Ok(manifest_dir) = env::var("CARGO_MANIFEST_DIR") {
        PathBuf::from(manifest_dir)
    } else {
        env::current_exe()
            .map(|path| {
                path.parent()
                    .map(|exe_parent_path| exe_parent_path.to_owned())
                    .unwrap()
            })
            .unwrap()
    }
}