Implement review comments from review 2046 - Added missing asserts - Removed unneeded property nulling - Changed clone test objects to random data from *TestDataGenerator classes Related to Issue [WTI-1365] git-svn-id: https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/trunk@11353 5a3db67b-de53-47b5-99c8-a1c30a6650e2