Shortcut of the new mini button expand/close folder

Hi, I’m finally see the routing folders…maybe waiting for 10 years…so, using an S3 controller I need to have a shortcut to assign to my S3 the mini new button to open and close the selected folder…I’ve checked the list but there are nothing available…Hope to see It in the future, cause if You use a controller that Is very useful. Thanx

It’s not the same as a regular folder?

no…There’s no shortcut to toggle open closed selected track, only the mini button works also in the mixer