SDK: StopPublish property returns null value but doc says DateTime.MaxValue

Description

When fetching children of a page, and filtering for published pages, the property PageDate.StopPublish should be set to System.DateTime.MaxValue, if not set (according to this documentation:[ http://world.episerver.com/documentation/class-library/?documentId=cms/10/81811134]). But that’s not the case when we fetch children (from contentloader) this are set to null for all normally published pages.

This property was made nullable in CMS 10, but documentation was not changed to reflect that.