MC-34298: Introduce separate POST and PUT API for carts/mine/items

Author: engcom-Echo

app/code/Magento/Quote/Api/AddCartItemInterface.php

@@ -18,8 +18,8 @@ interface AddCartItemInterface
     /**
      * Add the specified cart item.
      *
-     * @param CartItemInterface $cartItem The item.
-     * @return CartItemInterface Item.
+     * @param \Magento\Quote\Api\Data\CartItemInterface $cartItem The item.
+     * @return \Magento\Quote\Api\Data\CartItemInterface Item.
      * @throws \Magento\Framework\Exception\NoSuchEntityException The specified cart does not exist.
      * @throws \Magento\Framework\Exception\CouldNotSaveException The specified item could not be saved to the cart.
      * @throws \Magento\Framework\Exception\InputException The specified item or cart is not valid.

app/code/Magento/Quote/Api/UpdateCartItemInterface.php

@@ -10,16 +10,16 @@
 use Magento\Quote\Api\Data\CartItemInterface;
 
 /**
- * Interface AddCartItemInterface
+ * Interface UpdateCartItemInterface
  * @api
   */
 interface UpdateCartItemInterface
 {
     /**
      * Update the specified cart item.
      *
-     * @param CartItemInterface $cartItem The item.
-     * @return CartItemInterface Item.
+     * @param \Magento\Quote\Api\Data\CartItemInterface $cartItem The item.
+     * @return \Magento\Quote\Api\Data\CartItemInterface Item.
      * @throws \Magento\Framework\Exception\NoSuchEntityException The specified cart does not exist.
      * @throws \Magento\Framework\Exception\CouldNotSaveException The specified item could not be saved to the cart.
      * @throws \Magento\Framework\Exception\InputException The specified item or cart is not valid.