Correct use of BRepPrimAPI_MakeXXXX : calling Shape() ?

Hallo !

Is the following line correct :
                   TopoDS_Shape    myShape     =       BRepPrimAPI_MakeRevol (  myWire,   RevolAxis,  2.0*M_PI );

Or is it mandatory to use some kind of intermediate object to be able to call  the  Shape() method, like this:
                BRepPrimAPI_MakeRevol            myRevolMaker ( myWire,   RevolAxis,  2.0*M_PI );
                TopoDS_Shape       myShape = myRevolMaker.Shape();

Thanks !