public enum HDPipeDesignOptimizationType| FixedInvertLevel | 0 | Keep invert levels of all pipes fixed and adjust only pipe diameter |
| FixedTopLevel | 1 | Keep the top level of all pipes fixed, which means that both pipe diameter and pipe invert level are adjusted. |
| IsOneOf |
Returns true if enumeration is one of the listed ones.
(Defined by GenericExtensions) |