+ HYDRODATA_EXPORT virtual bool AddBoundaryPolygon( const Handle(HYDROData_BCPolygon)& theBCPolygon );
+
+ HYDRODATA_EXPORT virtual void RemoveBoundaryPolygon( const Handle(HYDROData_BCPolygon)& theBCPolygon );
+
+ HYDRODATA_EXPORT virtual HYDROData_SequenceOfObjects GetBoundaryPolygons() const;
+