code: def modify_order_group(self, orderId, entry=None, target=None, stop=None, quantity=None):
          
          return self.parent.modify_order_group(self, orderId=orderId,
                                                entry=entry, target=target,
                                                stop=stop, quantity=quantity)
docs: Modify bracket order
  
          :Parameters:
              orderId : int
                  the order id to modify
  
          :Optional:
              entry: float
                  new entry limit price (for unfilled limit orders only)
              target: float
                  new target limit price (for unfilled limit orders only)
              stop: float
                  new stop limit price (for unfilled limit orders only)
              quantity : int
                  the required quantity of the modified order