const Marklin::Catalogue &get_catalogue() const { return catalogue; }
Marklin::Layout &get_layout() { return *layout; }
Marklin::Layout3D &get_layout_3d() { return *layout_3d; }
const Marklin::Catalogue &get_catalogue() const { return catalogue; }
Marklin::Layout &get_layout() { return *layout; }
Marklin::Layout3D &get_layout_3d() { return *layout_3d; }