public enum STSkinFrictionType| TotalFriction | 0 | TotalFriction |
| LawWallFullDepth | 1 | Law of the wall (full depth) / Van Rijn |
| LawWallSkinFriction | 2 | Law of the wall (skin friction) |
| IsOneOf |
Returns true if enumeration is one of the listed ones.
(Defined by GenericExtensions) |