/**
* Call this inside callback function to stop other registered callbacks from being called after
* this one. If priority is given than only callbacks of that priority or less will be skipped.
*
* @param integer $priority - Priority (optional)
* @return void
*/
public static function stop_propagation($priority = 0)
{
self::$propagate_limit = $priority ? $priority : self::get_current_priority();
}
