Set default values for HydraulicBoundaryLocation.DesignWaterLevel in demo project (from real calculation with HydraRing). used PipingInput's PiezometricHeadExit instead of re-executing the calculator. PipingInput synchronization is controlled by the PipingInputSynchronizer. Removed obsolete PipingInputExtensions. Initialized PipingInputSynchronizer from PipingInputContext. Related to Issue [WTI-383]