BuildingCoder.CmdCollectorPerformance.GetStructuralColumnSymbolCollector C# (CSharp) Method

        static FilteredElementCollector GetStructuralColumnSymbolCollector( Document doc )
        {
            return new FilteredElementCollector( doc )
            .OfCategory( BuiltInCategory.OST_StructuralColumns )
            .OfClass( typeof( FamilySymbol ) );
        }