DLC items

How are some mods stacking the new items? Is there a separate kit for it or something? From what I can see, they haven’t been added yet. Just a little confused here.

They are doing something like this:
Basically you get the path to the new item from the game, make a fake item using the same path and name as the item you want to add.
Not 100% sure on this but it makes sense that once you have cooked the mod, you will need to go into the “ModTools”/“Output” folder within the devkit and delete the fake items and folders BEFORE uploading. But you may not need to.

That’s what I was thinking, but didn’t think it’d actually work haha. Thanks!