The Tetgen module includes APIs and tools that facilitate the Tetrahedralization of Light Probes in Unity.
This module is enabled by default in all new projects. Unity strips it automatically if there are no Light Probes in your project. To control the stripping manually, do the following in the Unity Editor:
Alternatively, you can add this line to the Packages/manifest.json file to enable the module: "com.unity.modules.tetgen": "1.0.0",