Automattic\WP\Cron_Control\Cron_Options_CPT::event_title PHP Метод

Generate a standardized, human-readable post title from an event's arguments

private event_title ( $timestamp, $action, $instance )

    private function event_title($timestamp, $action, $instance)
    {
        return sprintf('%s | %s | %s', $timestamp, $action, $instance);
    }

Cron_Options_CPT