async fn get_state_cert<S>(
state: &S,
epoch: u64,
timeout: Duration,
) -> Result<LightClientStateUpdateCertificateV2<SeqTypes>, Error>async fn get_state_cert<S>(
state: &S,
epoch: u64,
timeout: Duration,
) -> Result<LightClientStateUpdateCertificateV2<SeqTypes>, Error>