I was recently playing this game and upon reviewing it I came to this position:
As you can see it has an attack point at “X” – this shape often also occurs in corner joseki’s and also has the same attack point:
After searching through Sensei’s we see both iron pillar and kosumi on the shape attack points page but I’m not aware of any literature/references that discuss “iron pillar leaning on kosumi”… is there any?
Update
Apparently Senseis does have a page on this topic.
The reddit thread was enlightening on this topic.