EditorResourcePicker inspect resource in "Sub Inspector"

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Godot Version

4.2.1

Question

I am creating an EditorInspectorPlugin to inspect custom resources. I am trying to emulate the default behavior: when clicking on a resource in the Inspector, it opens a “subview” where you can edit it and its subresources (if any).
desired behavior

I found a couple of ways to do it and tried all of them:

  • EditorInterface.edit_resource
  • EditorInterface.inspect_object

Both methods open the resource editor in the inspector. The problem is that, instead of opening the resource a subview (like in the image above), it opens a whole new inspector view. Similarly to older Godot 3 versions.

I tried various options and arguments, and the documentation doesn’t say anything about this.
Is it possible to replicate the default behavior without having to rewrite the whole Resource inspector UI?