[Python] Display normal vectors with open3d.visualization.O3DVisualizer

I'm using the amazing open3d Python libary to visualize some point Cloud. I already know the normal vectors of these points that I attribute directly as follows:

pcd = o3d.geometry.PointCloud()
pcd.points = o3d.utility.Vector3dVector(points)
pcd.normals = o3d.utility.Vector3dVector(normals)


I am also setting a visualizer in which I insert these points as follows:

app = gui.Application.instance
app.initialize()
vis = o3d.visualization.O3DVisualizer("Open3D - 3D Text", 1024, 768)
vis.show_settings = True
vis.add_geometry("my points", pcd)
with o3d.utility.VerbosityContextManager(o3d.utility.VerbosityLevel.Debug) as cm:
'''visualize'''
vis.reset_camera_to_default()
app.add_window(vis)
app.run()


Up to now, all of this has run as intended, however I am not able to set the visualizer in such a way that enables me to visualize the normal vectors. Apparently o3d.visualization.Visualizer() has this method get_render_option() that is said to "retrieve a RenderOption" object, and in this RenderOption object there is a point_show_normal property but I couldn't make my code (more complicated than the minimal example above) work with o3d.visualization.Visualizer(): I don't see how to use this o3d.visualization.Visualizer().get_render_option().point_show_normal.

Is there any way to show the normal vectors with with open3d.visualization.O3DVisualizer?

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