- Changed Enumeration of BreakWater to single object of BreakWater - Small review changes - Changed responsibility of null check from *CalculationGroupExtensions* to *PipingCalculationsView* Related to Issue [WTI-463] git-svn-id: https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/trunk@3055 5a3db67b-de53-47b5-99c8-a1c30a6650e2