Resolve #3440876 "Increase phpstan level"

fix phpstan errors level 2 to 6

src/Plugin/GraphQL/DataProducer/AddressCountryFields.php

@@ -39,10 +39,14 @@ class AddressCountryFields extends DataProducerPluginBase implements ContainerFa
   /**
    * AddressCountryName constructor.
    *
-   * @param array $configuration
-   * @param $plugin_id
-   * @param $plugin_definition
-   * @param \CommerceGuys\Addressing\Country\CountryRepositoryInterface
+   * @param array<string, mixed> $configuration
+   *   Plugin id of plugin.
+   * @param string $plugin_id
+   *   Definition data of plugin.
+   * @param array<string, mixed> $plugin_definition
+   *   Interface integration.
+   * @param \CommerceGuys\Addressing\Country\CountryRepositoryInterface $countryRepository
+   *   $countryRepository.
    */
   public function __construct(array $configuration, $plugin_id, $plugin_definition, CountryRepositoryInterface $countryRepository) {
     parent::__construct($configuration, $plugin_id, $plugin_definition);
@@ -50,7 +54,19 @@ class AddressCountryFields extends DataProducerPluginBase implements ContainerFa
   }
 
   /**
-   * {@inheritdoc}
+   * Creates an instance of the plugin.
+   *
+   * @param \Symfony\Component\DependencyInjection\ContainerInterface $container
+   *   The container to pull out services used in the plugin.
+   * @param array<string, mixed> $configuration
+   *   A configuration array containing information about the plugin instance.
+   * @param string $plugin_id
+   *   The plugin ID for the plugin instance.
+   * @param array<string, mixed> $plugin_definition
+   *   The plugin implementation definition.
+   *
+   * @return static
+   *   Returns an instance of this plugin.
    */
   public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
     return new static(