diff -u b/modules/commerce/src/Plugin/migrate/process/d7/CommerceOrderStateDefault.php b/modules/commerce/src/Plugin/migrate/process/d7/CommerceOrderStateDefault.php
--- b/modules/commerce/src/Plugin/migrate/process/d7/CommerceOrderStateDefault.php
+++ b/modules/commerce/src/Plugin/migrate/process/d7/CommerceOrderStateDefault.php
@@ -15,7 +15,7 @@
    * Provides the mapping to be used in the migration process.
    *
    * The array keys (draft, canceled, completed) are the local states, every
-   * array element is the one we will match agains. To provide your own mapping
+   * array element is the one we will match again. To provide your own mapping
    * you can extend CommerceOrderStateDefault and implement the getMapping()
    * method.
    *
diff -u b/modules/commerce/src/Plugin/migrate/process/d7/CommerceOrderStateValidation.php b/modules/commerce/src/Plugin/migrate/process/d7/CommerceOrderStateValidation.php
--- b/modules/commerce/src/Plugin/migrate/process/d7/CommerceOrderStateValidation.php
+++ b/modules/commerce/src/Plugin/migrate/process/d7/CommerceOrderStateValidation.php
@@ -15,7 +15,7 @@
    * Provides the mapping to be used in the migration process.
    *
    * The array keys (draft, canceled, completed) are the local states, every
-   * array element is the one we will match agains. To provide your own mapping
+   * array element is the one we will match again. To provide your own mapping
    * you can extend CommerceOrderStateDefault and implement the getMapping()
    * method.
    *
diff -u b/modules/commerce/src/Plugin/migrate/process/d7/CommercePrice.php b/modules/commerce/src/Plugin/migrate/process/d7/CommercePrice.php
--- b/modules/commerce/src/Plugin/migrate/process/d7/CommercePrice.php
+++ b/modules/commerce/src/Plugin/migrate/process/d7/CommercePrice.php
@@ -21,7 +21,7 @@
   public function transform($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
     /** @var \Drupal\commerce_price\Entity\CurrencyInterface $currency */
     $currency = \Drupal::service('commerce_price.currency_importer')->import($value['currency_code']);
-    // The old value was stored in the minor unit, divite it to get the decimal.
+    // The old value was stored in the minor unit, divide it to get the decimal.
     $new_value = [
       'number' => bcdiv($value['amount'], '100', $currency->getFractionDigits()),
       'currency_code' => $value['currency_code'],
diff -u b/modules/commerce/src/Plugin/migrate/source/d7/LineItem.php b/modules/commerce/src/Plugin/migrate/source/d7/LineItem.php
--- b/modules/commerce/src/Plugin/migrate/source/d7/LineItem.php
+++ b/modules/commerce/src/Plugin/migrate/source/d7/LineItem.php
@@ -33,7 +33,7 @@
   }
 
   /**
-   * @inheritDoc
+   * {@inheritdoc}
    */
   public function getIds() {
     $ids['line_item_id']['type'] = 'integer';
@@ -43,7 +43,7 @@
   }
 
   /**
-   * @inheritDoc
+   * {@inheritdoc}
    */
   public function query() {
     $query = $this->select('commerce_line_item', 'li')
@@ -53,7 +53,7 @@
   }
 
   /**
-   * @inheritDoc
+   * {@inheritdoc}
    */
   public function prepareRow(Row $row) {
     $order_item_type = OrderItemType::load($row->getSourceProperty('type'));
diff -u b/modules/commerce/src/Plugin/migrate/source/d7/PaymentTransaction.php b/modules/commerce/src/Plugin/migrate/source/d7/PaymentTransaction.php
--- b/modules/commerce/src/Plugin/migrate/source/d7/PaymentTransaction.php
+++ b/modules/commerce/src/Plugin/migrate/source/d7/PaymentTransaction.php
@@ -16,7 +16,7 @@
 class PaymentTransaction extends FieldableEntity {
 
   /**
-   * @inheritDoc
+   * {@inheritdoc}
    */
   public function fields() {
     return [
@@ -41,7 +41,7 @@
   }
 
   /**
-   * @inheritDoc
+   * {@inheritdoc}
    */
   public function getIds() {
     $ids['transaction_id']['type'] = 'integer';
diff -u b/modules/commerce/src/Plugin/migrate/source/d7/ProductDisplayType.php b/modules/commerce/src/Plugin/migrate/source/d7/ProductDisplayType.php
--- b/modules/commerce/src/Plugin/migrate/source/d7/ProductDisplayType.php
+++ b/modules/commerce/src/Plugin/migrate/source/d7/ProductDisplayType.php
@@ -32,7 +32,7 @@
   }
 
   /**
-   * @inheritDoc
+   * {@inheritdoc}
    */
   public function getIds() {
     $ids['type']['type'] = 'string';
@@ -85,8 +85,18 @@
    *
    * This function can be overwritten by custom migration classes if you need
    * different logic for determining the target variation type.
+   *
+   * @param \Drupal\migrate\Row $row
+   *   The current row.
+   * @param array $product_variation_types
+   *   An array of product variation types.
+   *
+   * @return bool|string
+   *   The product variation type matching the product, of FALSE if not found.
+   *
+   * @throws \Drupal\migrate\MigrateException
    */
-  public function resolveTargetVariationType(Row $row, $product_variation_types) {
+  public function resolveTargetVariationType(Row $row, array $product_variation_types) {
     $product_variation_type = FALSE;
 
     if ($this->configuration['variations']['matching']) {
diff -u b/modules/commerce/src/Plugin/migrate/source/d7/ProductType.php b/modules/commerce/src/Plugin/migrate/source/d7/ProductType.php
--- b/modules/commerce/src/Plugin/migrate/source/d7/ProductType.php
+++ b/modules/commerce/src/Plugin/migrate/source/d7/ProductType.php
@@ -16,7 +16,7 @@
 class ProductType extends DrupalSqlBase {
 
   /**
-   * @inheritDoc
+   * {@inheritdoc}
    */
   public function fields() {
     return [
@@ -29,7 +29,7 @@
   }
 
   /**
-   * @inheritDoc
+   * {@inheritdoc}
    */
   public function getIds() {
     $ids['type']['type'] = 'string';
@@ -54,7 +54,7 @@
   }
 
   /**
-   * @inheritDoc
+   * {@inheritdoc}
    */
   public function query() {
     $query = $this->select('commerce_product_type', 'pt')
diff -u b/modules/commerce/src/Plugin/migrate/source/d7/ProductVariations.php b/modules/commerce/src/Plugin/migrate/source/d7/ProductVariations.php
--- b/modules/commerce/src/Plugin/migrate/source/d7/ProductVariations.php
+++ b/modules/commerce/src/Plugin/migrate/source/d7/ProductVariations.php
@@ -31,7 +31,7 @@
   }
 
   /**
-   * @inheritDoc
+   * {@inheritdoc}
    */
   public function getIds() {
     $ids['product_id']['type'] = 'integer';
@@ -41,7 +41,7 @@
   }
 
   /**
-   * @inheritDoc
+   * {@inheritdoc}
    */
   public function query() {
     $query = $this->select('commerce_product', 'p')
@@ -51,7 +51,7 @@
   }
 
   /**
-   * @inheritDoc
+   * {@inheritdoc}
    */
   public function prepareRow(Row $row) {
     foreach (array_keys($this->getFields('commerce_product', $row->getSourceProperty('type'))) as $field) {
diff -u b/modules/commerce/tests/src/Kernel/Migrate/d7/OrderItemTest.php b/modules/commerce/tests/src/Kernel/Migrate/d7/OrderItemTest.php
--- b/modules/commerce/tests/src/Kernel/Migrate/d7/OrderItemTest.php
+++ b/modules/commerce/tests/src/Kernel/Migrate/d7/OrderItemTest.php
@@ -22,7 +22,7 @@
   ];
 
   /**
-   * @inheritDoc
+   * {@inheritdoc}
    */
   protected function setUp() {
     parent::setUp();
diff -u b/modules/commerce/tests/src/Kernel/Migrate/d7/ProductTest.php b/modules/commerce/tests/src/Kernel/Migrate/d7/ProductTest.php
--- b/modules/commerce/tests/src/Kernel/Migrate/d7/ProductTest.php
+++ b/modules/commerce/tests/src/Kernel/Migrate/d7/ProductTest.php
@@ -22,7 +22,7 @@
   ];
 
   /**
-   * @inheritDoc
+   * {@inheritdoc}
    */
   protected function setUp() {
     parent::setUp();
diff -u b/modules/commerce/tests/src/Kernel/Migrate/d7/ProfileBillingTest.php b/modules/commerce/tests/src/Kernel/Migrate/d7/ProfileBillingTest.php
--- b/modules/commerce/tests/src/Kernel/Migrate/d7/ProfileBillingTest.php
+++ b/modules/commerce/tests/src/Kernel/Migrate/d7/ProfileBillingTest.php
@@ -12,7 +12,7 @@
 class ProfileBillingTest extends Commerce1TestBase {
 
   /**
-   * @inheritDoc
+   * {@inheritdoc}
    */
   protected function setUp() {
     parent::setUp();