class @beta Efl.Ui.Navigation_Bar_Part_Back_Button extends Efl.Ui.Layout_Part
                                                   implements Efl.Gfx.Entity, Efl.Text, Efl.Content
{
   [[@Efl.Ui.Navigation_Bar internal part back button class.]]
   data: null;
   implements {
      Efl.Gfx.Entity.visible { set; get; }
      Efl.Text.text { set; get; }
      Efl.Content.content { set; get; }
      Efl.Content.content_unset;
   }
}