The base class for all instance objects. 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
Syntax
Inheritance Hierarchy
  System Object  
Autodesk.Revit.DB Element
Autodesk.Revit.DB Instance
Autodesk.Revit.DB FamilyInstance
Autodesk.Revit.DB ImportInstance
Autodesk.Revit.DB PointCloudInstance
Autodesk.Revit.DB ProjectLocation
Autodesk.Revit.DB RevitLinkInstance
 
 Autodesk.Revit.DB Element
Autodesk.Revit.DB Instance
Autodesk.Revit.DB FamilyInstance
Autodesk.Revit.DB ImportInstance
Autodesk.Revit.DB PointCloudInstance
Autodesk.Revit.DB ProjectLocation
Autodesk.Revit.DB RevitLinkInstance