Inheritance Hierarchy:
System.Object
Autodesk.Revit.DB.Element
Autodesk.Revit.DB.ElementType
Autodesk.Revit.DB.HostObjAttributes
Autodesk.Revit.DB.MEPCurveType
Autodesk.Revit.DB.Mechanical.DuctType
System.Object
Autodesk.Revit.DB.Element
Autodesk.Revit.DB.ElementType
Autodesk.Revit.DB.HostObjAttributes
Autodesk.Revit.DB.MEPCurveType
Autodesk.Revit.DB.Mechanical.DuctType