#[async_trait::async_trait]
trait Interface {
    async fn do_trait(&self);
}

struct Thing;

#[async_trait::async_trait]
impl Interface for Thing {
    async fn do_trait(&self) {
        println!("hello from trait");
    }
}

impl Thing {
    async fn do_direct(&self) {
        println!("hello from direct");
    }
}

#[tokio::main]
async fn main() {
    let thing = Thing {};

    thing.do_trait();
    thing.do_direct();
}