Creates the child controls of a System.Web.UI.WebControls.Menu control.
This member is primarily used by control developers when deriving a custom control from the System.Web.UI.WebControls.Menu class.
This method is called by the ASP.NET infrastructure to notify any controls that use composition-based implementation, including controls that derive from System.Web.UI.WebControls.CompositeDataBoundControl and System.Web.UI.WebControls.CompositeControl. to create any child controls they contain in preparation for postback or rendering.