tance method on any object of type <a href="https://api.apidocs.co/resolve/revit/2020/?asset_id=T:Autodesk.Revit.DB.CylindricalHelix" target="_blank" rel="noopener noreferrer">Autodesk.Revit.DB.CylindricalHelix</a>. When you use instance method syntax to call this method, omit the first parameter. For more information, see <a href="https://docs.microsoft.com/dotnet/visual-basic/programming-guide/language-features/procedures/extension-methods" target="_blank" rel="noopener noreferrer">Extension Methods (Visu