code: def place_market_order(self, product_id, side, size=None, funds=None,
                             client_oid=None,
                             stp=None,
                             overdraft_enabled=None,
                             funding_amount=None):
          
          params = {'product_id': product_id,
                    'side': side,
                    'order_type': 'market',
                    'size': size,
                    'funds': funds,
                    'client_oid': client_oid,
                    'stp': stp,
                    'overdraft_enabled': overdraft_enabled,
                    'funding_amount': funding_amount}
          params = dict((k, v) for k, v in params.items() if v is not None)
  
          return self.place_order(**params)
docs: Place market order.
  
          Args:
              product_id (str): Product to order (eg. 'BTC-USD')
              side (str): Order side ('buy' or 'sell)
              size (Optional[Decimal]): Desired amount in crypto. Specify this or
                  `funds`.
              funds (Optional[Decimal]): Desired amount of quote currency to use.
                  Specify this or `size`.
              client_oid (Optional[str]): User-specified Order ID
              stp (Optional[str]): Self-trade prevention flag. See `place_order`
                  for details.
              overdraft_enabled (Optional[bool]): If true funding above and
                  beyond the account balance will be provided by margin, as
                  necessary.
              funding_amount (Optional[Decimal]): Amount of margin funding to be
                  provided for the order. Mutually exclusive with
                  `overdraft_enabled`.
  
          Returns:
              dict: Order details. See `place_order` for example.