removeTokens method
This method must delete all AuthToken and AuthCodes for a ResourceOwner.
server
is the requesting AuthServer. resourceOwnerID
is the ResourceOwner.id.
Implementation
@override
Future removeTokens(AuthServer server, int resourceOwnerID) {
final tokenQuery = Query<ManagedAuthToken>(context)
..where((o) => o.resourceOwner).identifiedBy(resourceOwnerID);
return tokenQuery.delete();
}