Create a classic "edge" with three beams

first i’d like to thank you for this piece of software / environment. great work

i’m trying to use compas-timber in rhino8

when having a look at the examples i miss one type of Joint, the classic three beam edge in a “fachwerk” construction.

two horizontal beams have a L-Lap joint and the vertical beam has a tenon / mortise into them.

i suspect it need to be composed with rules and features?
is there an example of this around?