Question Detect if NavMesh baking failed

Hey Guys,
I‘m trying to detect if my game failed to (re)bake the NavMesh. The NavMesh is baked on runtime via the following function:

Code (CSharp):

1. private void CalcNavMesh()
2.         {
3.             LogMsg($"Calculate NavMesh");
4.             for (int i = 0; i < m_surfaces.Length; i++)
5.             {
6.                 m_surfaces[i].BuildNavMesh();
7.             }
8. //if building has failed do smth
9.         }

So, do you have any ideas how I could detect if the baking has failed?