NavMeshBuildSource update helper class

public class NavMeshBuildSourcePositionUpdater : MonoBehaviour {
    public NavMeshBuildSource mySource;
    public Transform myTransform;
    public Mesh myMesh;
    public int index;

    public void UpdatePosition()
    {
        mySource.transform = myTransform.localToWorldMatrix;
    }

    public NavMeshBuildSource CloneSource()
    {
        NavMeshBuildSource newSource = new NavMeshBuildSource();
        newSource.area = mySource.area;
        newSource.shape = mySource.shape;

        if(mySource.shape == NavMeshBuildSourceShape.Mesh)
        {
            newSource.sourceObject = myMesh;
        } else {
            newSource.size = mySource.size;
        }

        newSource.transform = myTransform.localToWorldMatrix;
        mySource = newSource;
        return newSource;
    }
}