AcDbVertexRef::AcDbVertexRef Constructor ()   

AcDbVertexRef();
AcDbVertexRef(
    const AcDbVertexRef&
);
explicit AcDbVertexRef(
    ImpliedType, 
    const AcDbEdgeRef& edgeRef, 
    int controlOrFitPointIndex = 0, 
    const AcGePoint3d& = AcGePoint3d::kOrigin
);