Issue #3483331 by tr: Use autowiring for Typed Data services

Closes #3483331

src/PlaceholderResolver.php

@@ -17,32 +17,18 @@ use Drupal\typed_data\Exception\InvalidArgumentException;
  */
 class PlaceholderResolver implements PlaceholderResolverInterface {
 
-  /**
-   * The typed data manager.
-   *
-   * @var \Drupal\typed_data\DataFetcherInterface
-   */
-  protected $dataFetcher;
-
-  /**
-   * The data filter manager.
-   *
-   * @var \Drupal\typed_data\DataFilterManagerInterface
-   */
-  protected $dataFilterManager;
-
   /**
    * Constructs the object.
    *
-   * @param \Drupal\typed_data\DataFetcherInterface $data_fetcher
-   *   The typed data manager.
-   * @param \Drupal\typed_data\DataFilterManagerInterface $data_filter_manager
-   *   The data filter manager.
+   * @param \Drupal\typed_data\DataFetcherInterface $dataFetcher
+   *   The typed data fetcher service.
+   * @param \Drupal\typed_data\DataFilterManagerInterface $dataFilterManager
+   *   The typed data filter manager.
    */
-  public function __construct(DataFetcherInterface $data_fetcher, DataFilterManagerInterface $data_filter_manager) {
-    $this->dataFetcher = $data_fetcher;
-    $this->dataFilterManager = $data_filter_manager;
-  }
+  public function __construct(
+    protected DataFetcherInterface $dataFetcher,
+    protected DataFilterManagerInterface $dataFilterManager,
+  ) {}
 
   /**
    * {@inheritdoc}