+ * Returns the list of all reference objects of this object.
+ */
+ HYDRODATA_EXPORT virtual HYDROData_SequenceOfObjects GetAllReferenceObjects() const;
+
+ /**
+ * Sets the "MustBeUpdated" flag: if object is depended on updated features.
+ * Reimplemented to update the state of child 3D object.
+ */
+ HYDRODATA_EXPORT virtual void SetToUpdate( bool theFlag );
+
+
+ /**
+ * Sets the top(2d projection) shape of the object.
+ */
+ HYDRODATA_EXPORT virtual void SetTopShape( const TopoDS_Shape& theShape );
+
+ /**
+ * Returns the top shape of the object.
+ */
+ HYDRODATA_EXPORT virtual TopoDS_Shape GetTopShape() const = 0;
+
+ /**
+ * Sets the 3d shape of the object.
+ */
+ HYDRODATA_EXPORT virtual void SetShape3D( const TopoDS_Shape& theShape );
+
+ /**
+ * Returns the 3d shape of the object.
+ */
+ HYDRODATA_EXPORT virtual TopoDS_Shape GetShape3D() const = 0;
+
+
+ /**
+ * Returns reference object which represent the 3D shape of object.