Inheritance in python from Geometry3D

I wanted to make a composite Geometry3D, so I tried to inherit a python class.

>>> class Foo(open3d.geometry.Geometry3D):
... def __init__(self):
... pass

I try to use this I expected some errors about missing methods e.g. 'rotate'...

However,
```
>>> open3d.visualization.draw_geometries([f])
Traceback (most recent call last):
File "", line 1, in
RuntimeError: Unable to cast from non-held to held instance (T& to Holder) (compile in debug mode for type information)
```

What does this mean - is this kind of inheritance on the python side possible?