wxAuiNotebook already inherits perfectly workable AdvanceSelection() and GetCurrentPage() methods from wxBookCtrlBase, no need to reimplement them in it. See #14309. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@71560 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775