Share Email Facebook Twitter LinkedIn IFCExtrusionCreationData.ClearOpenings Method Removes all cached openings from the data. Namespace: Autodesk.Revit.DB.IFCAssembly: RevitAPIIFC (in RevitAPIIFC.dll) Version: 25.3.0.0 (25.3.0.0) Syntax C# public void ClearOpenings() See AlsoReferenceIFCExtrusionCreationData ClassAutodesk.Revit.DB.IFC Namespace