The nodelist managed by this family. This is a reference that remains valid always since it is retained and reused by Systems that use the list. i.e. we never recreate the list, we always modify it in place.
See Implementation
The nodelist managed by this family. This is a reference that remains valid always since it is retained and reused by Systems that use the list. i.e. we never recreate the list, we always modify it in place.