Building a Collider Mesh in Blender for PyPRP?

So I understand the Logic/Box/Triangle Mesh collision. But that is not good for hollow objects like stairs and boxes.
I searched around and found allusion to something called collider meshes. How are these made in Blender for PyPRP? What kinds of colliders can be made, and how are they made?
Appreciate your help!
I searched around and found allusion to something called collider meshes. How are these made in Blender for PyPRP? What kinds of colliders can be made, and how are they made?
Appreciate your help!