//! Your task is to add the `color` method to `TrafficLightColor`.

#[derive(Debug)]
enum TrafficLightColor {
    Red,
    Yellow,
    Green,
}

impl TrafficLightColor {
    // TODO
}

fn main() {
    let c = TrafficLightColor::Yellow;

    assert_eq!(c.color(), "yellow");

    println!("{:?}", c);
}