This is class Autodesk.AutoCAD.DatabaseServices.AssocCompoundActionParam.

Autodesk.AutoCAD.DatabaseServices.DBObject
    Autodesk.AutoCAD.DatabaseServices.AssocActionParam
        Autodesk.AutoCAD.DatabaseServices.AssocCompoundActionParam
            Autodesk.AutoCAD.DatabaseServices.AssocPathActionParam

Public Class AssocCompoundActionParam
Inherits AssocActionParam

public class AssocCompoundActionParam : AssocActionParam;