ProBuilder UV API not accessible.

I'm working on procedural level generation and using ProBuilder as the tool to manipulate the meshes.
The more I use it the more I discover feature and functions not accessible outside the assembly. Like the auto UV solution that you can use in the UV editor to fix the UV mapping (Convert to Auto -> Reset UVs), that whole feature-set is inside an internal class in the ProBuilder assembly, Why?

I will probably move ProBuilder into me Package folder and modify it to get access to everything I need. I just think it's really unhelpful to make seemingly random functions 'internal'.

First, does anybody know a way to access the auto UV solution outside the ProBuilder assembly?

And second, what would be the reson to hide it? I mean sure, some functions might be very specific to internal problems, but shouldn't that be private to the object needing it then? It really seems unnecessary to me.