revoke method
Implementation
@override
Future<void> revoke(String id, DateTime at) async {
for (final MapEntry<String, DVSessionRecord> entry in _byHash.entries) {
if (entry.value.session.id == id) {
_byHash[entry.key] =
DVSessionRecord(entry.key, entry.value.session._copy(revokedAt: at));
return;
}
}
}