As you know, in unity jobs it is not possible to use managed types. therefore i can not create a mesh in a job and either have to use three nativearrays for tris verts and colors or use Mesh.MeshData. To bake the meshcollider i have to have created a mesh and input its instance id which i cannot do in a job.
there also does not seem to be that clear of a documentation about Mesh.MeshData.
i tried using MeshData but it seems pointless as there is no way to get an instance id from it.