Callback::bind

static function bind($fields)
{
	global $USER_FIELD_MANAGER;

	$eventManager = EventManager::getInstance();
	$eventManager->registerEventHandlerCompatible('main', 'OnUserTypeBuildList', 'rest', __CLASS__, static::getUserTypeId($fields));

	$USER_FIELD_MANAGER->CleanCache();
	static::$descriptionCache = null;
	BitrixRestPlacementTable::clearHandlerCache();
}