ScriptedImporter: How to assign a custom icon to an imported asset?

I’ve created a ScriptedImporter that generates an UnityEngine.Mesh asset. That works all really well, but I wonder how I can assign a custom icon to the generated mesh.

Unity displays it using the actual Mesh icon, which isn’t wrong, just not what I want:

5295105--531537--upload_2019-12-18_15-7-43.png

I would like to change this icon, to indicate that the mesh is not a regular “rendering mesh”, but meant to be used with a MeshCollider.

I hoped I could this somehow specify in the ScriptedImporter, but I didn’t find anything regarding an icon.

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