The learning don’t stop! This isn’t even a new feature! I ran into this feature while talking to my previous boss from the t-shirt shop.
He was asking for a tool that would look at your existing process color artwork and then assign colors from the Pantone Solid Coated color book. I didn’t know how to do it at the time. I went back and told my current boss about it, he showed me it already exists in Adobe Illustrator, and that it’s been there for a long time.