const TopoDS_Shape& srcV = srcExp.Current();
const TopoDS_Shape& tgtV = shape2ShapeMap( srcV, /*isSrc=*/true );
const SMDS_MeshNode* srcN = SMESH_Algo::VertexNode( TopoDS::Vertex( srcV ), srcMeshDS );
const TopoDS_Shape& srcV = srcExp.Current();
const TopoDS_Shape& tgtV = shape2ShapeMap( srcV, /*isSrc=*/true );
const SMDS_MeshNode* srcN = SMESH_Algo::VertexNode( TopoDS::Vertex( srcV ), srcMeshDS );