Are any UnityEditor Classes available at runtime (outside of the editor)?

Title pretty much says it all. Though if some are and some are not, I would also be curious where I could find information on the distinction.

I was originally using AssetDatabase.LoadAssetAtPath to find an AnimationClip in a script at runtime, but then I came across a few posts (including this one) saying that this wont work. I looked in the documentation and am not seeing anything about this, which I thought was strange. But then I started thinking, maybe I’m already supposed to know this because none of the UnityEditor classes are available at runtime? If so, I don’t remember ever seeing anything about this anywhere.

The function was working just fine when I was testing it, but having seen a few different posts saying it wont work, I’m assuming it was only working because I was testing with the play button in the editor (which also seems strange, but with the given information that is the best guess I can come up with).

Hopefully someone can shed some more light on this for me.

nope… the assembly is not included in builds… apparently.