where to find the optixGlass-dragon model?

Where can I find the beautiful dragon model used in the following rendering? (If it’s publicly available)
https://github.com/nvpro-samples/optix_advanced_samples/blob/master/src/optixGlass/optixGlass-dragon.png

The link is at the bottom of this page, which is the README.md in that folder:
https://github.com/nvpro-samples/optix_advanced_samples/tree/master/src/optixGlass

Thanks Detlef.