Problem with mouse click event handler

[vovaekb]

I am using Open3D v0.19.0. I need to add a mouse click capability to my application with O3DVisualizer. Gemini recommended me to use the underlying SceneWidget and its set_on_mouse() method. I tried this variant:

vis.scene_widget.set_on_mouse(self._on_mouse_click)

and this:

vis.scene.set_on_mouse(self._on_mouse_click)

But it didn't work. I failed to find any information about mouse handlers in the official documentation for Open3D v0.19.0.
The only thing I found is mouse_mode on O3DVisualizer.

How can I add a mouse click event handler on O3DVisualizer?