public void Undo()
 {
     try
     {
         var patientId = _request.Id;
         var contactId = _contactId;
         _contactEndpointUtil.UndoDereferencePatientInContact(contactId, patientId, _request.Version, _request.ContractNumber, contactWithUpdatedRecentLists, _request.UserId);
     }
     catch (Exception ex)
     {
         throw new Exception("AD: DereferencePatientInContactCommand Execute::" + ex.Message, ex.InnerException);
     }
 }