efl/src/lib/elementary/efl_ui_navigation_bar_part.eo

class @beta Efl.Ui.Navigation_Bar_Part extends Efl.Ui.Layout_Part_Content
{
   [[Efl UI Navigation_Bar internal part class]]
   data: null;
   implements {
      Efl.Content.content { set; get; }
      Efl.Content.content_unset;
   }
}