GraphQL-296: Removed unused interface. Set up graphqlschema

Author: AleksLi

app/code/Magento/QuoteGraphQl/Model/Cart/SetBillingAddressOnCart.php

@@ -13,14 +13,13 @@
 use Magento\Framework\GraphQl\Query\Resolver\ContextInterface;
 use Magento\Quote\Api\Data\CartInterface;
 use Magento\Quote\Model\Quote\Address;
-use Magento\Quote\Model\BillingAddressManagement;
 use Magento\Quote\Api\BillingAddressManagementInterface;
 use Magento\Customer\Api\AddressRepositoryInterface;
 
 /**
  * Set single shipping address for a specified shopping cart
  */
-class SetBillingAddressOnCart implements SetBillingAddressOnCartInterface
+class SetBillingAddressOnCart
 {
     /**
      * @var BillingAddressManagementInterface

app/code/Magento/QuoteGraphQl/Model/Cart/SetBillingAddressOnCartInterface.php

@@ -13,7 +13,7 @@
 use Magento\Framework\GraphQl\Schema\Type\ResolveInfo;
 use Magento\Framework\Stdlib\ArrayManager;
 use Magento\QuoteGraphQl\Model\Cart\GetCartForUser;
-use Magento\QuoteGraphQl\Model\Cart\SetBillingAddressOnCartInterface;
+use Magento\QuoteGraphQl\Model\Cart\SetBillingAddressOnCart as SetBillingAddressOnCartModel;
 
 /**
  * Class SetBillingAddressOnCart
@@ -33,19 +33,19 @@ class SetBillingAddressOnCart implements ResolverInterface
     private $arrayManager;
 
     /**
-     * @var SetBillingAddressOnCartInterface
+     * @var SetBillingAddressOnCartModel
      */
     private $setBillingAddressOnCart;
 
     /**
      * @param GetCartForUser $getCartForUser
      * @param ArrayManager $arrayManager
-     * @param SetBillingAddressOnCartInterface $setBillingAddressOnCart
+     * @param SetBillingAddressOnCartModel $setBillingAddressOnCart
      */
     public function __construct(
         GetCartForUser $getCartForUser,
         ArrayManager $arrayManager,
-        SetBillingAddressOnCartInterface $setBillingAddressOnCart
+        SetBillingAddressOnCartModel $setBillingAddressOnCart
     ) {
         $this->getCartForUser = $getCartForUser;
         $this->arrayManager = $arrayManager;

app/code/Magento/QuoteGraphQl/Model/Resolver/SetBillingAddressOnCart.php

@@ -8,6 +8,4 @@
 <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
     <preference for="Magento\QuoteGraphQl\Model\Cart\SetShippingAddressesOnCartInterface"
                 type="Magento\QuoteGraphQl\Model\Cart\SetShippingAddressOnCart" />
-    <preference for="Magento\QuoteGraphQl\Model\Cart\SetBillingAddressOnCartInterface"
-                type="Magento\QuoteGraphQl\Model\Cart\SetBillingAddressOnCart" />
 </config>

app/code/Magento/QuoteGraphQl/etc/graphql/di.xml

@@ -35,7 +35,7 @@ input CartItemQuantityInput {
 
 input SetBillingAddressOnCartInput {
     cart_id: String!
-    billing_address: [BillingAddressInput!]
+    billing_address: BillingAddressInput!
 }
 
 input BillingAddressInput {