This class is used to define pull-down and shortcut menus and submenus.

Autodesk.AutoCAD.Customization.ElementBase
    Autodesk.AutoCAD.Customization.VersionableElement
        Autodesk.AutoCAD.Customization.CustomizationElement
        Autodesk.AutoCAD.Customization.ICustomizationContainer
            Autodesk.AutoCAD.Customization.PopMenu

Public Class PopMenu
Inherits CustomizationElement
Inherits ICustomizationContainer

public class PopMenu : CustomizationElement, ICustomizationContainer;