An orphaned Over is an Over that does not author an Opinion that affects
the composed Stage's result. In short, it's an over
specifier that
points to nothing. Check out the usda folder for a better idea
of what that looks like, if needed.
for (auto const &prim : stage->TraverseAll()) {
if (!prim.IsDefined()) {
std::cout << prim.GetPath() << std::endl;
}
}
print(list(prim for prim in stage.TraverseAll() if not prim.IsDefined()))
https://graphics.pixar.com/usd/docs/USD-Glossary.html#USDGlossary-Over