Iterate over the available input device seats for the canvas.
A "seat" is the term used for a group of input devices, typically including a pointer and a keyboard. A seat object is the parent of the individual input devices.
Since 1.22
seats @beta @pure_virtual { return: iterator<Efl.Input.Device>; }
Eina_Iterator *efl_canvas_scene_seats(Eo *obj);