Navigation mesh builder interface.
| isRunning | Returns true if an asynchronous build is still running. |
| BuildNavMesh | Build the Navmesh. |
| BuildNavMeshAsync | Build the Navmesh Asyncronously. |
| BuildNavMeshForMultipleScenes | Builds the combined navmesh for the contents of multiple scenes. |
| Cancel | Cancel Navmesh construction. |
| ClearAllNavMeshes | Clear all Navmeshes. |