parameters: (self, broker_, order, bar)
docstring: Override to return the fill price and quantity for a market order or None if the order can't be filled
          at the given time.
  
          :param broker_: The broker.
          :type broker_: :class:`Broker`
          :param order: The order.
          :type order: :class:`pyalgotrade.broker.MarketOrder`
          :param bar: The current bar.
          :type bar: :class:`pyalgotrade.bar.Bar`
          :rtype: A :class:`FillInfo` or None if the order should not be filled.
docstring_summary: Override to return the fill price and quantity for a market order or None if the order can't be filled
          at the given time.
docstring_tokens: Override to return the fill price and quantity for a market order or None if the order can t be filled at the given time .
function: def fillMarketOrder(self, broker_, order, bar):
          """Override to return the fill price and quantity for a market order or None if the order can't be filled
          at the given time.
  
          :param broker_: The broker.
          :type broker_: :class:`Broker`
          :param order: The order.
          :type order: :class:`pyalgotrade.broker.MarketOrder`
          :param bar: The current bar.
          :type bar: :class:`pyalgotrade.bar.Bar`
          :rtype: A :class:`FillInfo` or None if the order should not be filled.
          """
          raise NotImplementedError()
function_tokens: def fillMarketOrder ( self , broker_ , order , bar ) : raise NotImplementedError ( )