Function CheckNonNested

cpp/src/arrow/compute/kernels/vector_sort_internal.h:503–508

};

inline Status CheckNonNested(const FieldRef& ref) {
  if (ref.IsNested()) {
    return Status::KeyError("Nested keys not supported for SortKeys");
  }
  return Status::OK();
}

template <typename T>
Result<T> PrependInvalidColumn(Result<T> res) {