class AnnounceBlock

class AnnounceBlock extends BlockBase implements ContainerFactoryPluginInterface {
  
  /**
   * Constructs a new AnnouncementsFeedBlock instance.
   *
   * @param array $configuration
   *   A configuration array containing information about the plugin instance.
   * @param string $plugin_id
   *   The plugin ID for the plugin instance.
   * @param mixed $plugin_definition
   *   The plugin implementation definition.
   * @param \Drupal\announcements_feed\AnnounceRenderer $announceRenderer
   *   The AnnounceRenderer service.
   */
  public function __construct(array $configuration, $plugin_id, $plugin_definition, protected AnnounceRenderer $announceRenderer) {
    parent::__construct($configuration, $plugin_id, $plugin_definition);
  }
  
  /**
   * {@inheritdoc}
   */
  public function blockAccess(AccountInterface $account) : AccessResultInterface {
    return AccessResult::allowedIfHasPermission($account, 'access announcements');
  }
  
  /**
   * {@inheritdoc}
   */
  public function build() : array {
    return $this->announceRenderer
      ->render();
  }

}