class BRepTopAdaptor_FClass2d;
class Geom2dAdaptor_Curve;
class TopoDS_Solid;
-class BRepFeat_Builder;
-class BRepFeat_MakeCylindricalHole;
-class BRepFeat_SplitShape;
-class BRepFeat_Form;
-class BRepFeat_RibSlot;
-class BRepFeat_MakePrism;
-class BRepFeat_MakeRevol;
-class BRepFeat_MakePipe;
-class BRepFeat_Gluer;
-class BRepFeat_MakeDPrism;
-class BRepFeat_MakeLinearForm;
-class BRepFeat_MakeRevolutionForm;
//! BRepFeat is necessary for the