connectVertices Boundary face

[lolleko]

I've been wondering how splitting a boundary face is handled in the Half Edge structure when using connectVertices(). How is determined which face will become the new boundary face? Judging by https://github.com/nmwsharp/geometry-central/blob/ca43ed7daf97379fc533f74374d007ed7147e62f/src/surface/manifold_surface_mesh.cpp#L619 it seems like it would make a difference whether you use connectVertices(a,b) or connectVertices(b,a)