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/scryfall-rs/src
    
    the code of the file until where you have to start completion: #![deny(missing_docs)]
//! [Scryfall](https://scryfall.com) provides a REST-like API for ingesting our card data
//! programatically. The API exposes information available on the regular site
//! in easy-to-consume formats.
//!
//! ## Cards
//! The main way to fetch cards from this API is the [`Car
    
    fn all_sets() {
        let runtime = tokio::runtime::Runtime::new().unwrap();
        let handle = runtime.handle();
        handle.block_on(async move {
            Set::all()
                .await
                .unwrap()
                .into_stream()
                .map(Result::unwrap)
                .for_each(|set| async move {
                    assert!(set.code.get().len() >= 3);
                })
                .await
        });
    }