public Stream FindByApplicationGroupIdAndIsDisplayed(string applicationGroupId, string isDisplayed)
        {
            IFindApplicationItemBusinessService businessService = (IFindApplicationItemBusinessService)BusinessFactory.Create(Keywords.FindApplicationItem);
            OperationResult result = businessService.FindByApplicationGroupIdAndIsDisplayed(Convert.ToInt16(applicationGroupId), Convert.ToInt16(isDisplayed));

            return(result.ToJsonStream());
        }