Resolved How do you make these kind of Nested Animator Controller Files?

I was trying to animate a button by clicking on "Auto Generate Animation" on the button component and saw this, in my 2 years of using unity I never came across this, this looks hella nice to organize things rather than having them separate animation files. Do any of you guys know how to make these type of Animation controllers.

 

Apparently, you need to do it through code: https://forum.unity.com/threads/how-in-the-world-do-i-nest-animations-manually.266502/

 

Thanks a lot dude!, now I can sleep peacefully.