I see that in the official documentation for the Cart component of extensibility API (https://system.netsuite.com/help/helpcenter/en_US/APIs/SuiteCommerce/Extensibility/Frontend/Cart.html#methods), the methods setBillAddress() and setShipAddress() are not mentioned. But when I log the Cart component object using JS, I do see those methods, and I can also use them. Is this a documentation gap or are those methods not supposed to be used?

Thanks, I have flagged this with our technical writers