* Defined skeleton of IFileImporter for importing PipingSurfaceLine instances from .csv files ** Actual reading of file and creation of data instances is going to be part of Wti.IO Related to Issue [WTI-20] git-svn-id: https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/trunk@218 5a3db67b-de53-47b5-99c8-a1c30a6650e2