//! Returns ListOfShape from TopTools.
Standard_EXPORT virtual const TopTools_ListOfShape& Generated (const TopoDS_Shape& S) Standard_OVERRIDE;
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+
+ //! Returns true if the shape S has been deleted.
+ Standard_EXPORT virtual Standard_Boolean IsDeleted(const TopoDS_Shape& S) Standard_OVERRIDE;
+
//! Returns the TopoDS Shape of the bottom of the prism.
//! generated with theShape (subShape of the generating shape).
Standard_EXPORT TopoDS_Shape FirstShape (const TopoDS_Shape& theShape);
//! generated with theShape (subShape of the generating shape).
Standard_EXPORT TopoDS_Shape LastShape (const TopoDS_Shape& theShape);
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protected: