Set Data property of IObjectProperties from default value for CreateInstance and documented the requirement. This removes need for PropertyInfoExtensions to set Data if it was null after creation (not possible anymore). Related to Issue [WTI-1039] git-svn-id: https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/trunk@7428 5a3db67b-de53-47b5-99c8-a1c30a6650e2