/**
 * @schema StoreUpdateCartLineItem
 * type: object
 * description: The details to update in the line item.
 * x-schemaName: StoreUpdateCartLineItem
 * required:
 *   - quantity
 * properties:
 *   quantity:
 *     type: number
 *     title: quantity
 *     description: The item's quantity.
 *   metadata:
 *     type: object
 *     description: The item's metadata, can hold custom key-value pairs.
 * 
*/