public static IEnumerable <T> GetMany <T>(this IStaticDataQuery <T> lookup, string commaIdList)
            where T : class, IHasId
        {
            IEnumerable <int> ids = ConvertCommaDelimitedStringToInts(commaIdList);

            return(lookup.GetMany(ids));
        }
 public static IEnumerable <T> GetMany <T>(this IStaticDataQuery <T> lookup, IEnumerable <int> ids)
     where T : class, IHasId
 {
     return(ids?.Select(id => lookup.Get(id)));
 }