def create_free_shipping_promotion(cls, free_shipping_promotion, **kwargs):
        """Create FreeShippingPromotion

        Create a new FreeShippingPromotion
        This method makes a synchronous HTTP request by default. To make an
        asynchronous HTTP request, please pass async=True
        >>> thread = api.create_free_shipping_promotion(free_shipping_promotion, async=True)
        >>> result = thread.get()

        :param async bool
        :param FreeShippingPromotion free_shipping_promotion: Attributes of freeShippingPromotion to create (required)
        :return: FreeShippingPromotion
                 If the method is called asynchronously,
                 returns the request thread.
        """
        kwargs['_return_http_data_only'] = True
        if kwargs.get('async'):
            return cls._create_free_shipping_promotion_with_http_info(free_shipping_promotion, **kwargs)
        else:
            (data) = cls._create_free_shipping_promotion_with_http_info(free_shipping_promotion, **kwargs)
            return data