public OperationResultListVo <UserPreferencesViewModel> GetAll(Guid currentUserId)
        {
            try
            {
                IEnumerable <UserPreferences> allModels = userPreferencesDomainService.GetAll();

                IEnumerable <UserPreferencesViewModel> vms = mapper.Map <IEnumerable <UserPreferences>, IEnumerable <UserPreferencesViewModel> >(allModels);

                return(new OperationResultListVo <UserPreferencesViewModel>(vms));
            }
            catch (Exception ex)
            {
                return(new OperationResultListVo <UserPreferencesViewModel>(ex.Message));
            }
        }