Deprecate n_vertices etc?
TopologyKernel::n_{vertices, edges, ...}()
counts include deleted entities that are not garbage collected yet. Uses for this include finding out the maximum index, for property-like structure or translations to other data structures.
In many cases n_logical_{vertices, ...}()
is the correct choice, when the user is actually interested in the properties of the mesh, e.g. checking if it is empty, face-less etc.
I would like to replace the former functions by something with a new name (hard problem!) and deprecate the old ones.