Retrieve an item list from the server as an ItemList object

        :type item_list_url: String or ItemList
        :param item_list_url: URL of the item list to retrieve, or an
            ItemList object

        :rtype: ItemList
        :returns: The ItemList

        :raises: APIError if the request was not successful

def get_item_list(self, item_list_url):
        """ Retrieve an item list from the server as an ItemList object

        :type item_list_url: String or ItemList
        :param item_list_url: URL of the item list to retrieve, or an
            ItemList object

        :rtype: ItemList
        :returns: The ItemList

        :raises: APIError if the request was not successful


        """
        resp = self.api_request(str(item_list_url))
        return ItemList(resp['items'], self, str(item_list_url), resp['name'])