Function check_revocation 

pub fn check_revocation(
    credential: &DppAccessCredential,
    status_list: &StatusList,
) -> RevocationOutcome

Resolve a credential’s revocation status against an already-fetched status list. Fetching the status-list credential over the network is an infrastructure concern handled by the platform (crypto Gap 5) — this is the pure decision given the list.

A credential that declares no credentialStatus is NotRevoked (there is nothing to revoke against).