Common interface for objects that have multiple contents (sub objects).
APIs in this interface deal with containers of multiple sub objects, not with individual parts.
Returns the number of UI elements packed in this container.
int efl_content_count(Eo *obj);
Begin iterating over this object's contents.
Eina_Iterator *efl_content_iterate(Eo *obj);
Unswallow an object from this container.
Eina_Bool efl_content_remove(Eo *obj, Efl_Gfx *content);