Modifying PropertyField child elements

I'm using this extension method to modify PropertyField GUI child elements that are only generated after binding:

Code (CSharp):

1.         public static void OnPopulated(this PropertyField propertyField, Action callback)
2.         {
3.             if (propertyField.childCount > 0)
4.             {
5.                 callback?.Invoke();
6.             }
7.             else
8.             {
9.                 propertyField.schedule.Execute(() => OnPopulated(propertyField, callback));
10.             }
11.         }

I've also seen people using OnGeometryChanged event for this, but this seems to work better.

Either way, it feels pretty hacky.

Is there a better way to do this?
Can we get an event for this?

PropertyFields are a major building block in Editor UI and it seems like they should be easier to work with.

 

I think you want the UGUI forum. The UI Toolkit is a newer UI system from Unity.
https://forum.unity.com/forums/ugui-textmesh-pro.60/

 

No, I mean the UI Toolkit PropertyField: https://docs.unity3d.com/ScriptReference/UIElements.PropertyField.html

You can’t query its children while building the rest of the UI since the child elements don’t exist until some time after binding. Looking for the cleanest/official way to do this.