public static List <T> AnnualZoneResult <T>(this ZoneData zoneData, tsdZoneArray tsdZoneArray)
{
if (zoneData == null)
{
return(null);
}
IEnumerable enumerable = zoneData.GetAnnualZoneResult((int)tsdZoneArray) as IEnumerable;
if (enumerable == null)
{
return(null);
}
List <T> result = new List <T>();
foreach (object @object in enumerable)
{
if (@object == null)
{
result.Add(default);
