public void Handle(AccountOpened e)
 {
 }
 /// <summary>
 /// Apply account opened state changes.
 /// </summary>
 /// <param name="e">The account opened event.</param>
 protected void Apply(AccountOpened e)
 {
     Type = e.AccountType;
     Number = e.AccountNumber;
     Balance = e.Balance;
     Status = e.Status;
 }