Feature Request Exposing Secondary Textures at runtime

From what I can tell, the ability to set Secondary Textures from script now only exists in Editor on the TextureImporter. Yet SecondarySpriteTexture looks like it exists in the engine itself, so I am wondering if it is possible to expose a setter so I may assign them at runtime.

Context: I'm generating spritesheets out of vanilla and mod sprites on startup. Secondary Textures are super-nifty for avoiding material swaps or thinking about materials at all. It would simplify a lot.

 

And a getter. Similar request: https://forum.unity.com/threads/how-to-get-secondarytexture-at-runtime.980334/

 

+1
Yeah, this would be really useful!
I'm making a game where the textures are loaded in at runtime (since I want to allow modding later on). Exposing the secondary textures is the only way I could get normal map effects. Thanks!

 

2022.2 https://unity3d.com/unity/alpha/2022.2.0a9

Thank you, Unity!