Adds an item to the current shopping cart and logs the activity. Saves the shopping cart if it has not been saved yet. If an item in such configuration is already present in the cart, its quantity is increased by Quantity. Saves all product options and bundle items after adding and evaluates the cart.

Adds an item to the current shopping cart and logs the activity. Saves the shopping cart if it has not been saved yet. If an item in such configuration is already present in the cart, its quantity is increased by quantity. Saves all product options and bundle items after adding and evaluates the cart.