This .NET class wraps the AcRxObject ObjectARX class. 

Object is a base class for classes whose objects require runtime-identifiable classes, and runtime analysis of the ancestry of a class. Implemented to support registration of new classes from ObjectARX applications at runtime. 

Autodesk.AutoCAD.Runtime.DisposableWrapper
    Autodesk.AutoCAD.Runtime.RXObject
        Autodesk.AutoCAD.Runtime.Dictionary
        Autodesk.AutoCAD.Runtime.DynamicLinker
        Autodesk.AutoCAD.Runtime.Overrule
        Autodesk.AutoCAD.Runtime.RXClass

Public abstract Class RXObject
Inherits DisposableWrapper
Inherits ICloneable

public abstract class RXObject : DisposableWrapper, ICloneable;