EntityImageStyle.php

<?php

namespace Drupal\image\Plugin\migrate\destination;

use Drupal\Component\Plugin\Exception\PluginNotFoundException;
use Drupal\migrate\Attribute\MigrateDestination;
use Drupal\migrate\MigrateException;
use Drupal\migrate\Plugin\migrate\destination\EntityConfigBase;
use Drupal\migrate\Row;

/**
 * Entity image style destination.
 *
 * Every migration that uses this destination must have an optional
 * dependency on the d6_file migration to ensure it runs first.
 */
class EntityImageStyle extends EntityConfigBase {
  
  /**
   * {@inheritdoc}
   */
  public function import(Row $row, array $old_destination_id_values = []) {
    $effects = [];
    // Need to set the effects property to null on the row before the ImageStyle
    // is created, this prevents improper effect plugin initialization.
    if ($row->getDestinationProperty('effects')) {
      $effects = $row->getDestinationProperty('effects');
      $row->setDestinationProperty('effects', []);
    }
    /** @var \Drupal\image\Entity\ImageStyle $style */
    $style = $this->getEntity($row, $old_destination_id_values);
    // Iterate the effects array so each effect plugin can be initialized.
    // Catch any missing plugin exceptions.
    foreach ($effects as $effect) {
      try {
        $style->addImageEffect($effect);
      } catch (PluginNotFoundException $e) {
        throw new MigrateException($e->getMessage(), 0, $e);
      }
    }
    $style->save();
    return [
      $style->id(),
    ];
  }

}