How to test a trained model using Toronto 3D data with RandLA-Net?

### Checklist

- [X] I have searched for [similar issues](https://github.com/isl-org/Open3D-ML/issues).
- [X] I have tested with the [latest development wheel](http://www.open3d.org/docs/latest/getting_started.html#development-version-pip).
- [X] I have checked the [release documentation](http://www.open3d.org/docs/release/) and the [latest documentation](http://www.open3d.org/docs/latest/) (for `master` branch).

### My Question

Hello,

I want to test on my own dataset with the Toronto3D(tf) model, which I downloaded from the link https://github.com/isl-org/Open3D-ML#semantic-segmentation-1. I have shared the files of the model below.

Could there be something missing in these files? The .meta and checkpoint files are not present in the model When I try to test the RandLA-Net algorithm, I get errors that the .meta and checkpoint files do not exist.

Thanks.