text: from hummingbot.core.data_type.order_book import OrderBook
  from hummingbot.core.data_type.order_book_tracker_entry import OrderBookTrackerEntry
  from hummingbot.connector.exchange.demex.demex_active_order_tracker import DemexComActiveOrderTracker
  
  
  class DemexComOrderBookTrackerEntry(OrderBookTrackerEntry):
      def __init__(
          self, trading_pair: str, timestamp: float, order_book: OrderBook, active_order_tracker: DemexComActiveOrderTracker
      ):
          self._active_order_tracker = active_order_tracker
          super(DemexComOrderBookTrackerEntry, self).__init__(trading_pair, timestamp, order_book)
  
      def __repr__(self) -> str:
          return (
              f"DemexComOrderBookTrackerEntry(trading_pair='{self._trading_pair}', timestamp='{self._timestamp}', "
              f"order_book='{self._order_book}')"
          )
  
      @property
      def active_order_tracker(self) -> DemexComActiveOrderTracker:
          return self._active_order_tracker
  