/**
  * Delete function override: also delete references
  */
 static function del($ba_id)
 {
     // delete all references...
     CRM_Core_DAO::executeQuery("DELETE FROM civicrm_bank_account_reference WHERE ba_id='{$ba_id}';");
     // ...then delete the bank account object
     $printLabel = new CRM_Banking_DAO_BankAccount();
     $printLabel->id = $ba_id;
     $printLabel->delete();
 }