ActionPluginCollection.php

<?php

namespace Drupal\Core\Action;

use Drupal\Core\Plugin\DefaultSingleLazyPluginCollection;

/**
 * Provides a container for lazily loading Action plugins.
 */
class ActionPluginCollection extends DefaultSingleLazyPluginCollection {
    
    /**
     * {@inheritdoc}
     *
     * @return \Drupal\Core\Action\ActionInterface
     */
    public function &get($instance_id) {
        return parent::get($instance_id);
    }

}