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UpdateRunnerManager.php in Scheduled Updates 8

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src/Plugin/UpdateRunnerManager.php
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<?php

/**
 * @file
 * Contains \Drupal\scheduled_updates\Plugin\UpdateRunnerManager.
 */
namespace Drupal\scheduled_updates\Plugin;

use Drupal\Core\Cache\CacheBackendInterface;
use Drupal\Core\Extension\ModuleHandlerInterface;
use Drupal\Core\Plugin\DefaultPluginManager;
class UpdateRunnerManager extends DefaultPluginManager {

  /**
   * Constructs a new ImageEffectManager.
   *
   * @param \Traversable $namespaces
   *   An object that implements \Traversable which contains the root paths
   *   keyed by the corresponding namespace to look for plugin implementations.
   * @param \Drupal\Core\Cache\CacheBackendInterface $cache_backend
   *   Cache backend instance to use.
   * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
   *   The module handler.
   */
  public function __construct(\Traversable $namespaces, CacheBackendInterface $cache_backend, ModuleHandlerInterface $module_handler) {
    parent::__construct('Plugin/UpdateRunner', $namespaces, $module_handler, 'Drupal\\scheduled_updates\\Plugin\\UpdateRunnerInterface', 'Drupal\\scheduled_updates\\Annotation\\UpdateRunner');
    $this
      ->alterInfo('scheduled_updates_runners_info');
    $this
      ->setCacheBackend($cache_backend, 'scheduled_updates_runners');
  }

  /**
   * {@inheritdoc}
   */
  protected function findDefinitions() {
    $definitions = parent::findDefinitions();
    if (isset($definitions['default'])) {

      // Always put default first.
      $definitions = [
        'default' => $definitions['default'],
      ] + $definitions;
    }
    return $definitions;
  }

}

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