See https://www.boost.org/doc/libs/develop/libs/openmethod/doc/html/openmethod/reference/boost/openmethod/virtual_traits-0be.html#_specializations. <img width="1072" height="681" alt="Image" src="https://github.com/user-attachments/assets/fed44aaf-672c-4549-967d-b0cd1171c720" />
See https://www.boost.org/doc/libs/develop/libs/openmethod/doc/html/openmethod/reference/boost/openmethod/virtual_traits-0be.html#_specializations.