Working with a basket in Bitrix D7, bitrix.basket.basket
Starting from version 16, a new version of the Bitrix store core is used, which is part of the Bitrix D7 core. But some classes and methods are available in the 15 version of the store (sale, not main). All classes for working with the store are collected in the sale module, therefore, to work with the examples in the article, we use use for the namespace of the online store module.