private IList <SelectListItem> GetUserList(IList <string> excludedUserLoginIdList)
        {
            IList <IUserVO> userList = CallReportManager.RetrieveUserList(excludedUserLoginIdList);

            Logger.Debug("Search|User DDL: " + (userList != null ? userList : null));

            return((IList <SelectListItem>)
                   CallReportMapper.Map(userList, typeof(IList <IUserVO>), typeof(IList <SelectListItem>)));
        }