CronInterface.php

<?php

namespace Drupal\Core;


/**
 * An interface for running cron tasks.
 *
 * @see https://www.drupal.org/docs/administering-a-drupal-site/cron-automated-tasks
 */
interface CronInterface {
    
    /**
     * Executes a cron run.
     *
     * Do not call this function from a test. Use $this->cronRun() instead.
     *
     * @return bool
     *   TRUE upon success, FALSE otherwise.
     */
    public function run();

}