SplinePathMeshBuilder to Curvy Generator

[AnneAtLukkien]

I am currently updating and improving code that was originally built bij another company using an older version of Curvy.
I basically fixed everything except for the code below:

Since I can't find really good examples online how to convert a SplinePathMeshBuilder to a Curvy Generator version I'd love to get some advice on how to convert this. Especially since I am new to Curvy.

Here's the code (and thanks in advance):  

     public SplinePathMeshBuilder CreateMesh ()
        {              
                var MeshBuilder = SplinePathMeshBuilder.Create ();
                
                spline.Refresh ();

                MeshBuilder.Spline = spline;
                MeshBuilder.CapShape = SplinePathMeshBuilder.MeshCapShape.Custom;
                MeshBuilder.StartMesh = railCapMesh;
                MeshBuilder.gameObject.layer = parentTransform.gameObject.layer;
                MeshBuilder.GetComponent<Renderer> ().material = railMaterial;
                MeshBuilder.UV = SplinePathMeshBuilder.MeshUV.Absolute;
                MeshBuilder.UVParameter = 0.12f; //width of the mapping in cm. 
                MeshBuilder.ExtrusionParameter = 3;
                MeshBuilder.EndCap = MeshBuilder.StartCap    = false;
                MeshBuilder.Refresh ();

                var coll = MeshBuilder.gameObject.AddComponent<MeshCollider> ();

                coll.isTrigger = true;

                railPieceSelection rps = MeshBuilder.gameObject.AddComponent<railPieceSelection> ();

                rps.railPiece = this;

                rps.selected += RailPieceSelectedEventHandler;
                
                MeshBuilder.transform.parent = parentTransform;
                
                return MeshBuilder;
            }