returnstd::cout<<"[addPolylineFromPolygonMesh] A shape with id <"<<id<<"> already exists! Please choose a different id and retry.\n"<<std::endl,false;
// return std::cout << "[addPolylineFromPolygonMesh] A shape with id <"<< id << "> already exists! Please choose a different id and retry.\n" << std::endl, false;