code: def set_max_order_size(self,
                             asset=None,
                             max_shares=None,
                             max_notional=None,
                             on_error='fail'):
          
          control = MaxOrderSize(asset=asset,
                                 max_shares=max_shares,
                                 max_notional=max_notional,
                                 on_error=on_error)
          self.register_trading_control(control)
docs: Set a limit on the number of shares and/or dollar value of any single
          order placed for sid.  Limits are treated as absolute values and are
          enforced at the time that the algo attempts to place an order for sid.
  
          If an algorithm attempts to place an order that would result in
          exceeding one of these limits, raise a TradingControlException.
  
          Parameters
          ----------
          asset : Asset, optional
              If provided, this sets the guard only on positions in the given
              asset.
          max_shares : int, optional
              The maximum number of shares that can be ordered at one time.
          max_notional : float, optional
              The maximum value that can be ordered at one time.