* Read and Create extension methods for storing HeightStructure instances. * DeepClone for all string elements (to ensure storage fingerprint generation works properly) * Cleanup Xml docs in PersistenceRegistry (was still referencing old 'update' API that has been removed) Related to Issue [WTI-656] git-svn-id: https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/trunk@6060 5a3db67b-de53-47b5-99c8-a1c30a6650e2