Open3d: Non-blocking visualization example not working

[aaranta]

Describe the bug
"examples/Python/Advanced/non_blocking_visualization.py" error. Not able to invoke visualizer.
Error reported is:
vis.update_geometry()
TypeError: update_geometry(): incompatible function arguments. The following argument types are supported:
1. (self: open3d.open3d.visualization.Visualizer, arg0: open3d.open3d.geometry.Geometry) -> bool

To Reproduce
Steps to reproduce the behavior:

cd examples/Python/Advanced
python non_blocking_visualization.py

Expected behavior
Visualizer should be invoked properly..

Environment (please complete the following information):

• OS: Windows 10.0
• Python version: 3.7.3
• Open3D version: 0.9.0
• Is this remote workstation?: no
• How did you install Open3D?: pip

[aaranta]

I've found the fix. Just add "source" as the argument to the vis.update_geometry() function.
vis.update_geometry(source)

Refer to the doc for more details.
http://www.open3d.org/docs/latest/python_api/open3d.geometry.html