They may not be in the documentation, but they are most certainly in the DgnPlatformNET API as I am using them in C#.
Bentley.GeometryNET.SolidPrimitive
They may not be in the documentation, but they are most certainly in the DgnPlatformNET API as I am using them in C#.
Bentley.GeometryNET.SolidPrimitive