struct Callback_Event
{
  field1: int;
  field2: list<int*>;
}

class Callback (Efl.Object)
{
   data: Callback_Data;
   events {
     prefix,event1: void;
     prefix,event2: Callback;
     prefix,event3: int;
     prefix,event4: list<int*>;
     prefix,event5: Callback_Event;
   }
}