code: def replace_fixed_rate_shipping_by_id(cls, fixed_rate_shipping_id, fixed_rate_shipping, **kwargs):
          
          kwargs['_return_http_data_only'] = True
          if kwargs.get('async'):
              return cls._replace_fixed_rate_shipping_by_id_with_http_info(fixed_rate_shipping_id, fixed_rate_shipping, **kwargs)
          else:
              (data) = cls._replace_fixed_rate_shipping_by_id_with_http_info(fixed_rate_shipping_id, fixed_rate_shipping, **kwargs)
              return data
docs: Replace FixedRateShipping
  
          Replace all attributes of FixedRateShipping
          This method makes a synchronous HTTP request by default. To make an
          asynchronous HTTP request, please pass async=True
          >>> thread = api.replace_fixed_rate_shipping_by_id(fixed_rate_shipping_id, fixed_rate_shipping, async=True)
          >>> result = thread.get()
  
          :param async bool
          :param str fixed_rate_shipping_id: ID of fixedRateShipping to replace (required)
          :param FixedRateShipping fixed_rate_shipping: Attributes of fixedRateShipping to replace (required)
          :return: FixedRateShipping
                   If the method is called asynchronously,
                   returns the request thread.