efl/src/lib/elementary/elm_flip_part.eo

class Elm.Flip.Part (Efl.Object, Efl.Content)
{
   [[Elementary flip internal part class]]
   data: null;
   implements {
      Efl.Object.destructor;
      Efl.Content.content { get; set; }
      Efl.Content.content_unset;
   }
}