[libvirt] virDomainInterfaceStats why is there a size?

[Stefan de Konink <skinkie xs4all nl>]

Another simple question, what is the reasoning about the size field in
this call. I would really be a happy boy if anyone said:

if you put in path == NULL, it will fill your stats structure up to size
interfaces.


...but since this is not the case (yet) what is the reason behind it?


Stefan