ImageEffectPluginCollection.php

<?php

namespace Drupal\image;

use Drupal\Core\Plugin\DefaultLazyPluginCollection;

/**
 * A collection of image effects.
 */
class ImageEffectPluginCollection extends DefaultLazyPluginCollection {
    
    /**
     * {@inheritdoc}
     *
     * @return \Drupal\image\ImageEffectInterface
     */
    public function &get($instance_id) {
        return parent::get($instance_id);
    }
    
    /**
     * {@inheritdoc}
     */
    public function sortHelper($aID, $bID) {
        $a_weight = $this->get($aID)
            ->getWeight();
        $b_weight = $this->get($bID)
            ->getWeight();
        if ($a_weight == $b_weight) {
            return 0;
        }
        return $a_weight < $b_weight ? -1 : 1;
    }

}