Share Email Facebook Twitter LinkedIn MullionTypeSet.Clear Method Removes every mullion type from the set, rendering it empty.Namespace: Autodesk.Revit.DBAssembly: RevitAPI (in RevitAPI.dll) Version: 26.2.0.0 (26.2.0.0) Syntax C# public virtual void Clear() See AlsoReferenceMullionTypeSet ClassAutodesk.Revit.DB Namespace