public void Save(AccountOwner accountOwner)
 {
     MartenEventStore.AppendEventsToStream <AccountOwner>(_documentSession, accountOwner.Id, accountOwner.Changes);
     accountOwner.FlushChanges();
 }
 public void Save(CreditCard creditCard)
 {
     MartenEventStore.AppendEventsToStream <CreditCard>(_session, creditCard.Id, creditCard.Changes);
     creditCard.FlushChanges();
 }