EntityCloneInterface.php

<?php

namespace Drupal\entity_clone\EntityClone;

use Drupal\Core\Entity\EntityInterface;

/**
 * Defines a common interface for all entity clone objects.
 */
interface EntityCloneInterface {
    
    /**
     * Clone an entity.
     *
     * @param \Drupal\Core\Entity\EntityInterface $entity
     *   The entity.
     * @param \Drupal\Core\Entity\EntityInterface $cloned_entity
     *   The cloned entity.
     * @param array $properties
     *   All new properties to replace old.
     *
     * @return \Drupal\Core\Entity\EntityInterface
     *   The new saved entity.
     */
    public function cloneEntity(EntityInterface $entity, EntityInterface $cloned_entity, array $properties = []);

}