textnodetype.php

См. документацию.

<?
namespace Bitrix\UI\EntitySelector;
 
class TextNodeType
{
    public const TEXT = 'text';
    public const HTML = 'html';
 
    public static function isValid($type): bool
    {
        return is_string($type) && ($type === self::TEXT || $type === self::HTML);
    }
}