Method: Get next answer in loop.
Method: Undo the pointer to next
Method: Setup current answer in loop.
Method: Check if there are answers in loop.
Method: Rewind answers in loop and reset index.
Method: Check if this is main query.
Method: Reset answers data in loop.
Method: Utility method to get all the ids in this request
Method: Pre fetch current users vote on all answers
Method: Return an instance of this class.