Contour component : No Multi-Threading?

Hello, y’all. I’ve been using much the contour components lately and I noticed that the component doesn’t have Multi Threading but I read in a developer page (Rhino - Multi-threaded components) that it should. Did I miss something or has this changed? @stevebaer

see, no dots.

Contour Components not Multi Threaded.gh (6.7 KB)