EntityQuery<(Of <(<'TEntity, TOrderKey>)>)>..::..ReferenceDate Field
When result ordering is based on Timestamp property, this date is
used to convert the timestamp to integer (seconds before/past).
Namespace:
Suoranta.EnterpriseLib.LinqAssembly: Suoranta.EnterpriseLib (in Suoranta.EnterpriseLib.dll)

