NavMesh building components - How to create a NavMesh in a prefab

We created a cube gameobject and then we generate a prefab. Then we need to create a NavMesh.
We try to do this, adding a Nav Mesh Prefab Instance to the cube prefab. But the Nav mesh is not generated. We try to do a Bake on the prefab without look.

 

I'm trying to do this too. In the Nav Mesh example here: https://github.com/Unity-Technologies/NavMeshComponents/tree/2018.2

There are prefabs with a Navmesh object inside each one. How were these created? Thanks

 

Have you tried baking at scene level and then making a prefab? As in not creating the prefab until after the object you want the bake on has baked?

 

Bump

 

Does this help?
https://forum.unity.com/threads/using-prebaked-prefab-navmeshes.468005/