/**
 * The base class for every unit of information stored in the cart service
 * @order 1
 */
export declare abstract class CartItem {
    /**
     * Returns an unique identifier for your item
     */
    abstract getId(): any;
    /**
     * Returns the name, a small text describing the item
     */
    abstract getName(): string;
    /**
     * Return how much a single unit of the item costs
     */
    abstract getPrice(): number;
    /**
     * Sets how much of this item is ordered
     */
    abstract setQuantity(quantity: number): void;
    /**
     * Returns how much of this item is ordered
     */
    abstract getQuantity(): number;
    /**
     * Returns the url of an image for the item
     */
    abstract getImage(): string;
    /**
     * Return the total cost of the item, that is the price multiplied by the quantity
     */
    total(): number;
}