std::shared_ptr<GeomAPI_Vertex> aGeomPrsVertex = getPresentationVertex(aPrs);
if (aGeomPrsVertex.get()) {
const TopoDS_Vertex& aPrsVertex = aGeomPrsVertex->impl<TopoDS_Vertex>();
std::shared_ptr<GeomAPI_Vertex> aGeomPrsVertex = getPresentationVertex(aPrs);
if (aGeomPrsVertex.get()) {
const TopoDS_Vertex& aPrsVertex = aGeomPrsVertex->impl<TopoDS_Vertex>();