Hello,
When you drag in a skeletonData Asset from the project window (unity), into the scene it makes a context menu asking you to select one of the two options.
How you do that? ive been looking through the GitHub but cant find anything 
@pharan, how you do that magic
- Edited
thanks for revealing your tricks
It was in the source all along.
Pharan is a sourcerer who does magic.
yeah I know, but I don't have access to the source, and searching for partial things from memory on GitHub is a pain