#[tokio::main]
async fn main() {
    let config = JwkConfiguration {
        jwk_url: "{JWK_URL}".to_string(),
        audience: "{AUDIENCE}".to_string(),
        issuer: HashSet::from(["{ISSUER}".to_string()]),
    };
    let jwk = jwkrs::JwkAuth::new(config);

    ...
}